./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx --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 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:06:59,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:06:59,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:06:59,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:06:59,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:06:59,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:06:59,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:06:59,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:06:59,289 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:06:59,291 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:06:59,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:06:59,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:06:59,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:06:59,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:06:59,294 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:06:59,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:06:59,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:06:59,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:06:59,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:06:59,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:06:59,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:06:59,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:06:59,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:06:59,300 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:06:59,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:06:59,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:06:59,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:06:59,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:06:59,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:59,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:06:59,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:06:59,312 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:06:59,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:06:59,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:06:59,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:06:59,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:06:59,313 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:06:59,313 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:06:59,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:06:59,314 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2023-11-21 22:06:59,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:06:59,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:06:59,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:06:59,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:06:59,617 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:06:59,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2023-11-21 22:07:02,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:07:03,400 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:07:03,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2023-11-21 22:07:03,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/data/9393a3c4a/b6c79816b65b4b6e921954fa5508aae5/FLAGc1bae9a38 [2023-11-21 22:07:03,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/data/9393a3c4a/b6c79816b65b4b6e921954fa5508aae5 [2023-11-21 22:07:03,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:07:03,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:07:03,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:03,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:07:03,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:07:03,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:03" (1/1) ... [2023-11-21 22:07:03,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ff08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:03, skipping insertion in model container [2023-11-21 22:07:03,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:03" (1/1) ... [2023-11-21 22:07:03,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:07:03,914 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2023-11-21 22:07:03,922 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2023-11-21 22:07:04,989 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:04,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:04,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:04,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:04,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,006 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,008 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,009 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,012 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:07:05,399 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:07:05,400 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:07:05,401 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:07:05,403 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:07:05,404 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:07:05,405 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:07:05,405 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:07:05,406 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:07:05,407 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:07:05,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:05,710 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:07:05,738 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2023-11-21 22:07:05,739 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_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2023-11-21 22:07:05,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,842 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,845 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,846 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,903 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:07:05,904 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:07:05,905 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:07:05,906 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:07:05,907 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:07:05,908 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:07:05,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:07:05,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:07:05,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:07:05,911 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:07:05,955 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:07:05,968 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2023-11-21 22:07:06,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:06,318 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,334 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,335 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,336 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,336 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,336 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,336 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,337 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,337 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,337 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,338 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,338 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,339 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,339 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,339 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:07:06,347 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:07:06,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06 WrapperNode [2023-11-21 22:07:06,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:06,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:06,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:07:06,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:07:06,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,634 INFO L138 Inliner]: procedures = 690, calls = 1683, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 659 [2023-11-21 22:07:06,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:06,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:07:06,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:07:06,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:07:06,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,660 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,775 INFO L187 HeapSplitter]: Split 314 memory accesses to 7 slices as follows [2, 3, 236, 6, 55, 9, 3] [2023-11-21 22:07:06,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:07:06,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:07:06,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:07:06,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:07:06,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (1/1) ... [2023-11-21 22:07:06,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:07:06,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:06,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:07:06,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:07:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:07:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-21 22:07:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-21 22:07:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-21 22:07:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-21 22:07:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 22:07:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 22:07:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:07:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:07:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:07:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:07:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 22:07:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:07:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:07:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:07:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:07:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:07:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-21 22:07:07,013 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-21 22:07:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:07:07,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:07:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:07:07,014 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:07:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-21 22:07:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-21 22:07:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 22:07:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 22:07:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 22:07:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 22:07:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-21 22:07:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-21 22:07:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:07:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-21 22:07:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:07:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:07:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 22:07:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 22:07:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:07:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-21 22:07:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:07:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:07:07,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:07:07,442 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:07:07,445 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:07:08,795 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:07:09,098 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:07:09,098 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:07:09,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:09 BoogieIcfgContainer [2023-11-21 22:07:09,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:07:09,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:07:09,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:07:09,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:07:09,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:07:03" (1/3) ... [2023-11-21 22:07:09,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c49631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:09, skipping insertion in model container [2023-11-21 22:07:09,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:06" (2/3) ... [2023-11-21 22:07:09,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c49631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:09, skipping insertion in model container [2023-11-21 22:07:09,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:09" (3/3) ... [2023-11-21 22:07:09,121 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2023-11-21 22:07:09,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:07:09,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:07:09,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:07:09,235 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;@458a4909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:07:09,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:07:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 79 states have internal predecessors, (92), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-21 22:07:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-21 22:07:09,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:09,257 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:09,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:09,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 483535492, now seen corresponding path program 1 times [2023-11-21 22:07:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382359123] [2023-11-21 22:07:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:07:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:07:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:07:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:07:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:07:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:07:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:07:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:07:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:07:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:07:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:07:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:07:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:07:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:07:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:07:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 22:07:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:07:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 22:07:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:07:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-21 22:07:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-21 22:07:11,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382359123] [2023-11-21 22:07:11,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382359123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:07:11,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646496946] [2023-11-21 22:07:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:11,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:11,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:11,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:07:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:07:11,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 22:07:12,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:07:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646496946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:07:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-21 22:07:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8540232] [2023-11-21 22:07:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:07:12,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:12,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:07:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:07:12,168 INFO L87 Difference]: Start difference. First operand has 149 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 79 states have internal predecessors, (92), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-21 22:07:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:07:12,713 INFO L93 Difference]: Finished difference Result 275 states and 387 transitions. [2023-11-21 22:07:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:07:12,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 95 [2023-11-21 22:07:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:07:12,728 INFO L225 Difference]: With dead ends: 275 [2023-11-21 22:07:12,729 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 22:07:12,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:07:12,737 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 39 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:07:12,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 567 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:07:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 22:07:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-21 22:07:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 77 states have internal predecessors, (85), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2023-11-21 22:07:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2023-11-21 22:07:12,800 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 95 [2023-11-21 22:07:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:07:12,801 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2023-11-21 22:07:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-21 22:07:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2023-11-21 22:07:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-21 22:07:12,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:12,807 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:12,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:07:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 22:07:13,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:13,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1350964636, now seen corresponding path program 1 times [2023-11-21 22:07:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033880954] [2023-11-21 22:07:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:13,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:07:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395035757] [2023-11-21 22:07:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:13,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:13,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:13,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:07:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:13,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:07:13,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:07:14,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:07:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033880954] [2023-11-21 22:07:14,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:07:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395035757] [2023-11-21 22:07:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395035757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:07:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9166336] [2023-11-21 22:07:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:07:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:07:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:07:14,053 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:07:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:07:14,641 INFO L93 Difference]: Finished difference Result 236 states and 315 transitions. [2023-11-21 22:07:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:07:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 113 [2023-11-21 22:07:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:07:14,645 INFO L225 Difference]: With dead ends: 236 [2023-11-21 22:07:14,646 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 22:07:14,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:07:14,649 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 39 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:07:14,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 668 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:07:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 22:07:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-21 22:07:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 77 states have internal predecessors, (85), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2023-11-21 22:07:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 191 transitions. [2023-11-21 22:07:14,670 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 191 transitions. Word has length 113 [2023-11-21 22:07:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:07:14,671 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 191 transitions. [2023-11-21 22:07:14,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:07:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 191 transitions. [2023-11-21 22:07:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-21 22:07:14,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:14,674 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:14,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:07:14,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:14,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:14,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash -174931365, now seen corresponding path program 2 times [2023-11-21 22:07:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174834814] [2023-11-21 22:07:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:15,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:07:15,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160928462] [2023-11-21 22:07:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:07:15,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:15,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:15,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:07:15,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:07:15,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:07:15,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:07:15,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:07:16,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:07:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:16,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174834814] [2023-11-21 22:07:16,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:07:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160928462] [2023-11-21 22:07:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160928462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:16,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:07:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522028082] [2023-11-21 22:07:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:07:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:07:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:07:16,120 INFO L87 Difference]: Start difference. First operand 145 states and 191 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:07:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:07:16,855 INFO L93 Difference]: Finished difference Result 231 states and 304 transitions. [2023-11-21 22:07:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:07:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2023-11-21 22:07:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:07:16,860 INFO L225 Difference]: With dead ends: 231 [2023-11-21 22:07:16,860 INFO L226 Difference]: Without dead ends: 143 [2023-11-21 22:07:16,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:07:16,862 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 42 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:07:16,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 941 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:07:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-21 22:07:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-21 22:07:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 75 states have internal predecessors, (83), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-21 22:07:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 187 transitions. [2023-11-21 22:07:16,884 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 187 transitions. Word has length 122 [2023-11-21 22:07:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:07:16,885 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 187 transitions. [2023-11-21 22:07:16,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:07:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 187 transitions. [2023-11-21 22:07:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-21 22:07:16,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:16,895 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:16,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:07:17,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:17,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:17,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash 751412983, now seen corresponding path program 1 times [2023-11-21 22:07:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538183685] [2023-11-21 22:07:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:17,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:07:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316947448] [2023-11-21 22:07:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:17,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:17,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:17,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:17,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:07:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:18,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 22:07:18,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-21 22:07:18,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:07:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:18,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538183685] [2023-11-21 22:07:18,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:07:18,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316947448] [2023-11-21 22:07:18,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316947448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:18,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:18,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:07:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224043758] [2023-11-21 22:07:18,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:18,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:07:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:07:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:07:18,261 INFO L87 Difference]: Start difference. First operand 143 states and 187 transitions. Second operand has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 22:07:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:07:19,591 INFO L93 Difference]: Finished difference Result 245 states and 321 transitions. [2023-11-21 22:07:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:07:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 140 [2023-11-21 22:07:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:07:19,596 INFO L225 Difference]: With dead ends: 245 [2023-11-21 22:07:19,599 INFO L226 Difference]: Without dead ends: 143 [2023-11-21 22:07:19,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:07:19,601 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 5 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:07:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1180 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 22:07:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-21 22:07:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-21 22:07:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 75 states have internal predecessors, (82), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-21 22:07:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2023-11-21 22:07:19,629 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 140 [2023-11-21 22:07:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:07:19,630 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2023-11-21 22:07:19,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 22:07:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2023-11-21 22:07:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-21 22:07:19,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:19,637 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:19,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:07:19,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:19,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:19,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1261355733, now seen corresponding path program 1 times [2023-11-21 22:07:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:19,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335419321] [2023-11-21 22:07:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:20,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:07:20,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102463928] [2023-11-21 22:07:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:20,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:20,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:20,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2e6830-c36d-4437-a0ff-9ba11aa3873d/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process