./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:46,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:46,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:50:46,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:46,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:46,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:46,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:46,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:46,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:46,944 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:46,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:46,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:46,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:46,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:46,950 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:46,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:46,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:46,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:46,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:46,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:46,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:46,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:46,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:46,955 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:46,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:46,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:46,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:46,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:46,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:46,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:46,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:46,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:46,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:46,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:46,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:46,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:46,963 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:46,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:46,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:46,964 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_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2023-11-26 11:50:47,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:47,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:47,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:47,387 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:47,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:47,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2023-11-26 11:50:50,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:51,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:51,096 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2023-11-26 11:50:51,138 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/data/fbce5183d/20c4a8d3f00b42fabf71742a9bf39e28/FLAG81eecb046 [2023-11-26 11:50:51,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/data/fbce5183d/20c4a8d3f00b42fabf71742a9bf39e28 [2023-11-26 11:50:51,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:51,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:51,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:51,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:51,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:51,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f30e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51, skipping insertion in model container [2023-11-26 11:50:51,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:51,683 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_a9762aaf-ff65-4579-924a-cd49d9583a90/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2023-11-26 11:50:51,694 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_a9762aaf-ff65-4579-924a-cd49d9583a90/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2023-11-26 11:50:53,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,091 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:53,705 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:50:53,707 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:50:53,708 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:50:53,710 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:50:53,712 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:50:53,713 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:50:53,714 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:50:53,714 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:50:53,715 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:50:53,716 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:50:54,010 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,019 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,028 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,126 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,156 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:54,287 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:54,318 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_a9762aaf-ff65-4579-924a-cd49d9583a90/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2023-11-26 11:50:54,320 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_a9762aaf-ff65-4579-924a-cd49d9583a90/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2023-11-26 11:50:54,402 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,430 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,432 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,435 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,497 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:50:54,499 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:50:54,500 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:50:54,501 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:50:54,502 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:50:54,502 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:50:54,503 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:50:54,504 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:50:54,504 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:50:54,505 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:50:54,564 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,572 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-26 11:50:54,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,649 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,649 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:50:54,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:54,934 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,934 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,934 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,935 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,936 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:54,943 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:54,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54 WrapperNode [2023-11-26 11:50:54,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:54,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:54,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:54,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:54,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,180 INFO L138 Inliner]: procedures = 696, calls = 1888, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 925 [2023-11-26 11:50:55,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:55,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:55,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:55,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:55,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,345 INFO L175 MemorySlicer]: Split 335 memory accesses to 7 slices as follows [2, 236, 18, 56, 3, 17, 3]. 70 percent of accesses are in the largest equivalence class. The 251 initializations are split as follows [2, 236, 5, 0, 1, 4, 3]. The 14 writes are split as follows [0, 0, 6, 4, 1, 3, 0]. [2023-11-26 11:50:55,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:55,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:55,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:55,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:55,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:55,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:55,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:55,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2023-11-26 11:50:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2023-11-26 11:50:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-26 11:50:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-26 11:50:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-26 11:50:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-26 11:50:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-26 11:50:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-26 11:50:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-26 11:50:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-26 11:50:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 11:50:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 11:50:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-26 11:50:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-26 11:50:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:50:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:50:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 11:50:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 11:50:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:50:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:50:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:50:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:50:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:50:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-26 11:50:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-26 11:50:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-26 11:50:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-26 11:50:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:55,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:50:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:50:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 11:50:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 11:50:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-26 11:50:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-26 11:50:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-26 11:50:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-26 11:50:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-26 11:50:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-26 11:50:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:50:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:50:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-26 11:50:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-26 11:50:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:50:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:50:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:50:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:50:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:50:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-26 11:50:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-26 11:50:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 11:50:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 11:50:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 11:50:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 11:50:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:50:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:50:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:50:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:50:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:50:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:50:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:50:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-26 11:50:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-26 11:50:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-26 11:50:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-26 11:50:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-26 11:50:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-26 11:50:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:50:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:50:56,057 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:56,070 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:57,228 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:57,412 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:57,413 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 11:50:57,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:57 BoogieIcfgContainer [2023-11-26 11:50:57,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:57,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:57,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:57,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:57,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:51" (1/3) ... [2023-11-26 11:50:57,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdec093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:57, skipping insertion in model container [2023-11-26 11:50:57,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (2/3) ... [2023-11-26 11:50:57,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdec093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:57, skipping insertion in model container [2023-11-26 11:50:57,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:57" (3/3) ... [2023-11-26 11:50:57,425 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2023-11-26 11:50:57,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:57,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:50:57,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:57,528 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;@f2bbfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:57,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:50:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 179 states have (on average 1.3016759776536313) internal successors, (233), 182 states have internal predecessors, (233), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-26 11:50:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 11:50:57,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,563 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2023-11-26 11:50:57,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:57,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -397418944, now seen corresponding path program 1 times [2023-11-26 11:50:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587922994] [2023-11-26 11:50:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:50:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:50:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:50:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:50:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:50:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:50:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:50:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:50:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:50:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:50:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:50:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:50:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:50:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:50:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 11:50:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 11:50:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-26 11:50:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587922994] [2023-11-26 11:50:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587922994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:58,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660583672] [2023-11-26 11:50:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:58,921 INFO L87 Difference]: Start difference. First operand has 319 states, 179 states have (on average 1.3016759776536313) internal successors, (233), 182 states have internal predecessors, (233), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 11:51:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:02,813 INFO L93 Difference]: Finished difference Result 761 states and 1300 transitions. [2023-11-26 11:51:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2023-11-26 11:51:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:02,837 INFO L225 Difference]: With dead ends: 761 [2023-11-26 11:51:02,837 INFO L226 Difference]: Without dead ends: 448 [2023-11-26 11:51:02,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:02,859 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 256 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 333 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-26 11:51:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-26 11:51:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 316. [2023-11-26 11:51:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 178 states have (on average 1.252808988764045) internal successors, (223), 180 states have internal predecessors, (223), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-26 11:51:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 447 transitions. [2023-11-26 11:51:02,991 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 447 transitions. Word has length 96 [2023-11-26 11:51:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:02,991 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 447 transitions. [2023-11-26 11:51:02,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 11:51:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 447 transitions. [2023-11-26 11:51:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 11:51:02,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:03,000 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2023-11-26 11:51:03,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:03,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:03,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1798619826, now seen corresponding path program 1 times [2023-11-26 11:51:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302212726] [2023-11-26 11:51:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:51:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:51:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:51:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:51:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:51:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:51:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 11:51:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 11:51:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-26 11:51:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302212726] [2023-11-26 11:51:03,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302212726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690955010] [2023-11-26 11:51:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:03,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:03,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:51:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:51:04,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-26 11:51:04,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690955010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:04,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:04,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-26 11:51:04,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158609215] [2023-11-26 11:51:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:04,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:04,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:04,764 INFO L87 Difference]: Start difference. First operand 316 states and 447 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 11:51:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:04,973 INFO L93 Difference]: Finished difference Result 395 states and 550 transitions. [2023-11-26 11:51:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:04,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2023-11-26 11:51:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:04,981 INFO L225 Difference]: With dead ends: 395 [2023-11-26 11:51:04,981 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:51:04,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:04,987 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 0 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:04,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 835 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:51:05,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2023-11-26 11:51:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 179 states have (on average 1.2513966480446927) internal successors, (224), 181 states have internal predecessors, (224), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-26 11:51:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2023-11-26 11:51:05,042 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 448 transitions. Word has length 96 [2023-11-26 11:51:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:05,043 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 448 transitions. [2023-11-26 11:51:05,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 11:51:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 448 transitions. [2023-11-26 11:51:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-26 11:51:05,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:05,051 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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] [2023-11-26 11:51:05,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:05,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:05,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:05,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 37371445, now seen corresponding path program 1 times [2023-11-26 11:51:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341798016] [2023-11-26 11:51:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:51:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:51:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:51:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:51:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:51:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:51:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 11:51:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 11:51:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 11:51:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:51:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 11:51:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-26 11:51:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:06,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341798016] [2023-11-26 11:51:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341798016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210620410] [2023-11-26 11:51:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:06,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:06,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:06,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:51:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:07,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-26 11:51:07,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210620410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:07,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-26 11:51:07,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643759772] [2023-11-26 11:51:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:07,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:07,324 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 11:51:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:08,039 INFO L93 Difference]: Finished difference Result 605 states and 865 transitions. [2023-11-26 11:51:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:08,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 115 [2023-11-26 11:51:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:08,045 INFO L225 Difference]: With dead ends: 605 [2023-11-26 11:51:08,045 INFO L226 Difference]: Without dead ends: 319 [2023-11-26 11:51:08,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:08,059 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 44 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:08,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1535 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:51:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-26 11:51:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-11-26 11:51:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 180 states have (on average 1.25) internal successors, (225), 183 states have internal predecessors, (225), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2023-11-26 11:51:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 457 transitions. [2023-11-26 11:51:08,113 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 457 transitions. Word has length 115 [2023-11-26 11:51:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:08,114 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 457 transitions. [2023-11-26 11:51:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 11:51:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 457 transitions. [2023-11-26 11:51:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-26 11:51:08,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:08,117 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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] [2023-11-26 11:51:08,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:08,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:08,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:08,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1276196470, now seen corresponding path program 1 times [2023-11-26 11:51:08,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:08,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497470301] [2023-11-26 11:51:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:08,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:51:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:51:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:51:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:51:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:51:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:51:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 11:51:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 11:51:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 11:51:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 11:51:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 11:51:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 11:51:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:51:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 11:51:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 11:51:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-26 11:51:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497470301] [2023-11-26 11:51:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497470301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322781736] [2023-11-26 11:51:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:09,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:09,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:51:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:10,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:51:10,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-26 11:51:10,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:10,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322781736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:10,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:10,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-26 11:51:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076863430] [2023-11-26 11:51:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:51:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:51:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:51:10,265 INFO L87 Difference]: Start difference. First operand 319 states and 457 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 11:51:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:11,099 INFO L93 Difference]: Finished difference Result 628 states and 920 transitions. [2023-11-26 11:51:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 123 [2023-11-26 11:51:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:11,105 INFO L225 Difference]: With dead ends: 628 [2023-11-26 11:51:11,106 INFO L226 Difference]: Without dead ends: 340 [2023-11-26 11:51:11,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:51:11,111 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 96 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:11,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2211 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:51:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-26 11:51:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2023-11-26 11:51:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 196 states have (on average 1.260204081632653) internal successors, (247), 199 states have internal predecessors, (247), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-26 11:51:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 494 transitions. [2023-11-26 11:51:11,152 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 494 transitions. Word has length 123 [2023-11-26 11:51:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:11,152 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 494 transitions. [2023-11-26 11:51:11,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 11:51:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 494 transitions. [2023-11-26 11:51:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-26 11:51:11,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:11,156 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:11,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:11,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:11,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:11,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 843859322, now seen corresponding path program 1 times [2023-11-26 11:51:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455216420] [2023-11-26 11:51:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:11,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188329935] [2023-11-26 11:51:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:11,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:11,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:51:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:12,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:51:12,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-26 11:51:12,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455216420] [2023-11-26 11:51:12,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188329935] [2023-11-26 11:51:12,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188329935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:12,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:12,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745082786] [2023-11-26 11:51:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:12,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:51:12,232 INFO L87 Difference]: Start difference. First operand 338 states and 494 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-26 11:51:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:13,171 INFO L93 Difference]: Finished difference Result 651 states and 968 transitions. [2023-11-26 11:51:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:13,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 136 [2023-11-26 11:51:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:13,179 INFO L225 Difference]: With dead ends: 651 [2023-11-26 11:51:13,179 INFO L226 Difference]: Without dead ends: 344 [2023-11-26 11:51:13,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:13,184 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 63 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:13,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1882 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:51:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-26 11:51:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 338. [2023-11-26 11:51:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 196 states have (on average 1.260204081632653) internal successors, (247), 199 states have internal predecessors, (247), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-26 11:51:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 494 transitions. [2023-11-26 11:51:13,233 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 494 transitions. Word has length 136 [2023-11-26 11:51:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:13,236 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 494 transitions. [2023-11-26 11:51:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-26 11:51:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 494 transitions. [2023-11-26 11:51:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-26 11:51:13,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:13,244 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:13,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:13,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:13,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1745306280, now seen corresponding path program 1 times [2023-11-26 11:51:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016903719] [2023-11-26 11:51:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:13,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819082518] [2023-11-26 11:51:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:13,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:13,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:51:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-26 11:51:14,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016903719] [2023-11-26 11:51:14,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819082518] [2023-11-26 11:51:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819082518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:14,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:14,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906219632] [2023-11-26 11:51:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:14,596 INFO L87 Difference]: Start difference. First operand 338 states and 494 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, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:51:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:15,028 INFO L93 Difference]: Finished difference Result 653 states and 978 transitions. [2023-11-26 11:51:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:15,029 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, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-11-26 11:51:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:15,034 INFO L225 Difference]: With dead ends: 653 [2023-11-26 11:51:15,035 INFO L226 Difference]: Without dead ends: 346 [2023-11-26 11:51:15,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:15,040 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 3 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:15,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1247 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-26 11:51:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2023-11-26 11:51:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 200 states have (on average 1.255) internal successors, (251), 203 states have internal predecessors, (251), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-26 11:51:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 498 transitions. [2023-11-26 11:51:15,084 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 498 transitions. Word has length 152 [2023-11-26 11:51:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:15,085 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 498 transitions. [2023-11-26 11:51:15,085 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, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:51:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 498 transitions. [2023-11-26 11:51:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-26 11:51:15,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:15,089 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:15,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:51:15,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:51:15,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:15,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2057034842, now seen corresponding path program 1 times [2023-11-26 11:51:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88136794] [2023-11-26 11:51:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:15,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055953341] [2023-11-26 11:51:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:15,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:15,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:51:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:51:16,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-26 11:51:16,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88136794] [2023-11-26 11:51:16,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055953341] [2023-11-26 11:51:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055953341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:16,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:51:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079321133] [2023-11-26 11:51:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:16,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:16,390 INFO L87 Difference]: Start difference. First operand 342 states and 498 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-26 11:51:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:17,596 INFO L93 Difference]: Finished difference Result 671 states and 987 transitions. [2023-11-26 11:51:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:51:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 152 [2023-11-26 11:51:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:17,601 INFO L225 Difference]: With dead ends: 671 [2023-11-26 11:51:17,602 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 11:51:17,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:17,606 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 123 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:17,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 2529 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:51:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 11:51:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2023-11-26 11:51:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 200 states have (on average 1.255) internal successors, (251), 203 states have internal predecessors, (251), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-26 11:51:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 498 transitions. [2023-11-26 11:51:17,642 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 498 transitions. Word has length 152 [2023-11-26 11:51:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:17,643 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 498 transitions. [2023-11-26 11:51:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-26 11:51:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 498 transitions. [2023-11-26 11:51:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-26 11:51:17,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:17,647 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:17,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:51:17,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:17,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash -615519952, now seen corresponding path program 1 times [2023-11-26 11:51:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:17,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220159717] [2023-11-26 11:51:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:17,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:17,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966129158] [2023-11-26 11:51:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:17,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:17,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:51:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:51:18,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-26 11:51:18,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:18,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:18,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220159717] [2023-11-26 11:51:18,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966129158] [2023-11-26 11:51:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966129158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:51:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299744895] [2023-11-26 11:51:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:18,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:51:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:18,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:51:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:51:18,754 INFO L87 Difference]: Start difference. First operand 342 states and 498 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:51:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:19,319 INFO L93 Difference]: Finished difference Result 629 states and 929 transitions. [2023-11-26 11:51:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 165 [2023-11-26 11:51:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:19,324 INFO L225 Difference]: With dead ends: 629 [2023-11-26 11:51:19,324 INFO L226 Difference]: Without dead ends: 344 [2023-11-26 11:51:19,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:19,328 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 98 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:19,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 2241 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:51:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-26 11:51:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-11-26 11:51:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 201 states have (on average 1.2537313432835822) internal successors, (252), 205 states have internal predecessors, (252), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2023-11-26 11:51:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 505 transitions. [2023-11-26 11:51:19,366 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 505 transitions. Word has length 165 [2023-11-26 11:51:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:19,366 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 505 transitions. [2023-11-26 11:51:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:51:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 505 transitions. [2023-11-26 11:51:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-26 11:51:19,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:19,371 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:19,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:19,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:19,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1337622523, now seen corresponding path program 1 times [2023-11-26 11:51:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513046107] [2023-11-26 11:51:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:19,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:19,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726371053] [2023-11-26 11:51:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:19,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:19,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:19,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:19,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:51:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:20,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:51:20,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-26 11:51:20,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513046107] [2023-11-26 11:51:20,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726371053] [2023-11-26 11:51:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726371053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:20,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:20,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:51:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818078601] [2023-11-26 11:51:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:51:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:51:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:20,661 INFO L87 Difference]: Start difference. First operand 344 states and 505 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 11:51:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:21,856 INFO L93 Difference]: Finished difference Result 649 states and 965 transitions. [2023-11-26 11:51:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:51:21,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 173 [2023-11-26 11:51:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:21,861 INFO L225 Difference]: With dead ends: 649 [2023-11-26 11:51:21,861 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:51:21,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:21,865 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 150 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:21,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2875 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:51:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:51:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2023-11-26 11:51:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 216 states have (on average 1.2592592592592593) internal successors, (272), 219 states have internal predecessors, (272), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2023-11-26 11:51:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 527 transitions. [2023-11-26 11:51:21,903 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 527 transitions. Word has length 173 [2023-11-26 11:51:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:21,904 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 527 transitions. [2023-11-26 11:51:21,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 11:51:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 527 transitions. [2023-11-26 11:51:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-26 11:51:21,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:21,909 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:21,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:22,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:22,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:22,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash -599062957, now seen corresponding path program 1 times [2023-11-26 11:51:22,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:22,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943327908] [2023-11-26 11:51:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:22,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943590181] [2023-11-26 11:51:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:22,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:22,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:22,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:51:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:23,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:51:23,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-26 11:51:23,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:23,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943327908] [2023-11-26 11:51:23,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943590181] [2023-11-26 11:51:23,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943590181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:23,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:51:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738336331] [2023-11-26 11:51:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:23,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:23,292 INFO L87 Difference]: Start difference. First operand 360 states and 527 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 11:51:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:24,045 INFO L93 Difference]: Finished difference Result 669 states and 996 transitions. [2023-11-26 11:51:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:51:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 186 [2023-11-26 11:51:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:24,051 INFO L225 Difference]: With dead ends: 669 [2023-11-26 11:51:24,051 INFO L226 Difference]: Without dead ends: 366 [2023-11-26 11:51:24,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:24,056 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 117 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:24,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2570 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:51:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-26 11:51:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 360. [2023-11-26 11:51:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 216 states have (on average 1.2592592592592593) internal successors, (272), 219 states have internal predecessors, (272), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2023-11-26 11:51:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 527 transitions. [2023-11-26 11:51:24,095 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 527 transitions. Word has length 186 [2023-11-26 11:51:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:24,096 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 527 transitions. [2023-11-26 11:51:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 11:51:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 527 transitions. [2023-11-26 11:51:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-26 11:51:24,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:24,101 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:51:24,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:51:24,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash -429075093, now seen corresponding path program 2 times [2023-11-26 11:51:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963296802] [2023-11-26 11:51:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:24,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770592659] [2023-11-26 11:51:24,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:24,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:24,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:24,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:51:25,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:25,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:25,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:51:25,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-26 11:51:25,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963296802] [2023-11-26 11:51:25,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770592659] [2023-11-26 11:51:25,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770592659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:25,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:51:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360848670] [2023-11-26 11:51:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:51:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:51:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:25,824 INFO L87 Difference]: Start difference. First operand 360 states and 527 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:51:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:26,652 INFO L93 Difference]: Finished difference Result 656 states and 970 transitions. [2023-11-26 11:51:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:51:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 215 [2023-11-26 11:51:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:26,658 INFO L225 Difference]: With dead ends: 656 [2023-11-26 11:51:26,658 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:51:26,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:26,662 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 125 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:26,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2966 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:51:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:51:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-11-26 11:51:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 217 states have (on average 1.2580645161290323) internal successors, (273), 221 states have internal predecessors, (273), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2023-11-26 11:51:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 532 transitions. [2023-11-26 11:51:26,697 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 532 transitions. Word has length 215 [2023-11-26 11:51:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:26,698 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 532 transitions. [2023-11-26 11:51:26,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:51:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 532 transitions. [2023-11-26 11:51:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-26 11:51:26,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:26,703 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-11-26 11:51:26,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-26 11:51:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:51:26,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:26,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 994376789, now seen corresponding path program 1 times [2023-11-26 11:51:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16036658] [2023-11-26 11:51:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:26,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:27,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543499799] [2023-11-26 11:51:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:27,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:27,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:27,034 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:27,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:51:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:51:27,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-26 11:51:28,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:28,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16036658] [2023-11-26 11:51:28,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543499799] [2023-11-26 11:51:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543499799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:28,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:28,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:51:28,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082280744] [2023-11-26 11:51:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:28,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:51:28,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:51:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:28,091 INFO L87 Difference]: Start difference. First operand 362 states and 532 transitions. Second operand has 11 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-26 11:51:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:29,395 INFO L93 Difference]: Finished difference Result 661 states and 981 transitions. [2023-11-26 11:51:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:51:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 231 [2023-11-26 11:51:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:29,400 INFO L225 Difference]: With dead ends: 661 [2023-11-26 11:51:29,400 INFO L226 Difference]: Without dead ends: 365 [2023-11-26 11:51:29,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:51:29,403 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 163 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:29,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 3712 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:51:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-26 11:51:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 363. [2023-11-26 11:51:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 218 states have (on average 1.2568807339449541) internal successors, (274), 222 states have internal predecessors, (274), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2023-11-26 11:51:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 533 transitions. [2023-11-26 11:51:29,438 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 533 transitions. Word has length 231 [2023-11-26 11:51:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:29,439 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 533 transitions. [2023-11-26 11:51:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-26 11:51:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 533 transitions. [2023-11-26 11:51:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-26 11:51:29,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:29,444 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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] [2023-11-26 11:51:29,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:29,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:51:29,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:29,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1155568051, now seen corresponding path program 2 times [2023-11-26 11:51:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907530641] [2023-11-26 11:51:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:29,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894676058] [2023-11-26 11:51:29,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:29,773 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:29,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:51:30,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:51:30,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:30,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:51:30,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-11-26 11:51:30,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907530641] [2023-11-26 11:51:30,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894676058] [2023-11-26 11:51:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894676058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:30,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:30,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:51:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417064215] [2023-11-26 11:51:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:30,565 INFO L87 Difference]: Start difference. First operand 363 states and 533 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 11:51:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:31,109 INFO L93 Difference]: Finished difference Result 659 states and 984 transitions. [2023-11-26 11:51:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:31,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 244 [2023-11-26 11:51:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:31,114 INFO L225 Difference]: With dead ends: 659 [2023-11-26 11:51:31,114 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:51:31,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:51:31,118 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 41 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:31,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1524 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:51:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:51:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2023-11-26 11:51:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 216 states have (on average 1.25) internal successors, (270), 219 states have internal predecessors, (270), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (137), 116 states have call predecessors, (137), 114 states have call successors, (137) [2023-11-26 11:51:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 523 transitions. [2023-11-26 11:51:31,148 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 523 transitions. Word has length 244 [2023-11-26 11:51:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 523 transitions. [2023-11-26 11:51:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 11:51:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 523 transitions. [2023-11-26 11:51:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-26 11:51:31,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:31,154 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:51:31,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:51:31,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:31,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1955981372, now seen corresponding path program 1 times [2023-11-26 11:51:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:31,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218276205] [2023-11-26 11:51:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:31,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:51:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187979766] [2023-11-26 11:51:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:31,463 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:31,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:51:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:32,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:51:32,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-26 11:51:32,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218276205] [2023-11-26 11:51:32,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:51:32,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187979766] [2023-11-26 11:51:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187979766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:51:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132354573] [2023-11-26 11:51:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:32,445 INFO L87 Difference]: Start difference. First operand 360 states and 523 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-26 11:51:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:33,135 INFO L93 Difference]: Finished difference Result 629 states and 918 transitions. [2023-11-26 11:51:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:51:33,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 233 [2023-11-26 11:51:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:33,140 INFO L225 Difference]: With dead ends: 629 [2023-11-26 11:51:33,140 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:51:33,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:33,142 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 113 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:33,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2593 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:51:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:51:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-11-26 11:51:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 217 states have (on average 1.2488479262672811) internal successors, (271), 221 states have internal predecessors, (271), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2023-11-26 11:51:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 526 transitions. [2023-11-26 11:51:33,174 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 526 transitions. Word has length 233 [2023-11-26 11:51:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:33,176 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 526 transitions. [2023-11-26 11:51:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-26 11:51:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 526 transitions. [2023-11-26 11:51:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-11-26 11:51:33,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:33,182 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 11:51:33,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9762aaf-ff65-4579-924a-cd49d9583a90/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0