./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/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_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/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_0340c6b5-627a-4c5d-918c-110b8f160f18/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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:55,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:55,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 12:03:55,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:55,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:55,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:55,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:55,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:55,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:55,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:55,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:55,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:55,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:55,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:55,870 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:55,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:55,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:03:55,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:55,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:55,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:03:55,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:55,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:03:55,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:03:55,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:55,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:55,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:55,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:55,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:55,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:55,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:55,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:55,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:03:55,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:55,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:55,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:55,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:55,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:03:55,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:55,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:55,883 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_0340c6b5-627a-4c5d-918c-110b8f160f18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2023-11-26 12:03:56,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:56,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:56,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:56,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:56,268 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:56,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-11-26 12:03:59,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:00,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:00,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-11-26 12:04:00,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/data/b3494214f/87632106fece4f9697f4065822151867/FLAG432f00e94 [2023-11-26 12:04:00,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/data/b3494214f/87632106fece4f9697f4065822151867 [2023-11-26 12:04:00,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:00,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:00,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:00,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:00,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:00,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:00" (1/1) ... [2023-11-26 12:04:00,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20db4669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:00, skipping insertion in model container [2023-11-26 12:04:00,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:00" (1/1) ... [2023-11-26 12:04:00,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:00,594 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_0340c6b5-627a-4c5d-918c-110b8f160f18/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-11-26 12:04:00,605 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_0340c6b5-627a-4c5d-918c-110b8f160f18/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-11-26 12:04:01,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,876 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:01,890 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,405 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:04:02,415 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:04:02,416 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:04:02,417 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:04:02,419 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:04:02,419 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:04:02,420 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:04:02,421 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:04:02,427 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:04:02,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:04:02,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,681 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,784 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,784 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,785 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,785 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:02,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:02,918 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_0340c6b5-627a-4c5d-918c-110b8f160f18/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-11-26 12:04:02,920 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_0340c6b5-627a-4c5d-918c-110b8f160f18/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-11-26 12:04:02,971 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,973 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,988 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,988 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:02,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,043 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:04:03,044 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:04:03,045 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:04:03,045 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:04:03,046 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:04:03,047 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:04:03,047 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:04:03,047 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:04:03,048 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:04:03,048 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:04:03,099 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,099 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,101 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,113 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-26 12:04:03,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:03,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:03,451 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,451 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,452 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,453 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,453 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,453 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,454 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,454 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,454 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,455 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,455 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,456 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,456 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,456 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,456 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:03,495 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:03,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03 WrapperNode [2023-11-26 12:04:03,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:03,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:03,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:03,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:03,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,741 INFO L138 Inliner]: procedures = 696, calls = 1888, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 820 [2023-11-26 12:04:03,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:03,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:03,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:03,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:03,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,912 INFO L175 MemorySlicer]: Split 321 memory accesses to 7 slices as follows [2, 236, 52, 18, 7, 3, 3]. 74 percent of accesses are in the largest equivalence class. The 249 initializations are split as follows [2, 236, 0, 5, 2, 1, 3]. The 12 writes are split as follows [0, 0, 4, 6, 1, 1, 0]. [2023-11-26 12:04:03,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:03,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:04,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:04,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:04,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:04,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:04,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (1/1) ... [2023-11-26 12:04:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:04,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:04,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-26 12:04:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-26 12:04:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-26 12:04:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-26 12:04:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:04:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-26 12:04:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-26 12:04:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-26 12:04:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-26 12:04:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 12:04:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 12:04:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-26 12:04:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-26 12:04:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 12:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 12:04:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 12:04:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 12:04:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:04:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:04:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:04:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 12:04:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 12:04:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 12:04:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-26 12:04:04,102 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-26 12:04:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-26 12:04:04,105 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-26 12:04:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:04,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 12:04:04,106 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 12:04:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 12:04:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 12:04:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-26 12:04:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-26 12:04:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-26 12:04:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-26 12:04:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-26 12:04:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-26 12:04:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:04:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:04:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-26 12:04:04,117 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-26 12:04:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:04:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:04:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:04:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:04:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:04:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 12:04:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 12:04:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 12:04:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 12:04:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 12:04:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-26 12:04:04,120 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-26 12:04:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 12:04:04,120 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 12:04:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 12:04:04,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:04:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 12:04:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 12:04:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-26 12:04:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-26 12:04:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-26 12:04:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-26 12:04:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-26 12:04:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:04:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:04:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 12:04:04,615 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:04,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:05,773 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:05,932 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:05,933 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-26 12:04:05,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:05 BoogieIcfgContainer [2023-11-26 12:04:05,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:05,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:05,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:05,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:05,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:00" (1/3) ... [2023-11-26 12:04:05,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f4d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:05, skipping insertion in model container [2023-11-26 12:04:05,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:03" (2/3) ... [2023-11-26 12:04:05,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f4d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:05, skipping insertion in model container [2023-11-26 12:04:05,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:05" (3/3) ... [2023-11-26 12:04:05,946 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2023-11-26 12:04:05,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:05,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:04:06,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:06,058 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;@62dc68f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:06,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 12:04:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 161 states have internal predecessors, (204), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-26 12:04:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 12:04:06,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:06,093 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] [2023-11-26 12:04:06,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:06,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1234306049, now seen corresponding path program 1 times [2023-11-26 12:04:06,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:06,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435365107] [2023-11-26 12:04:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:06,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:04:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:04:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:04:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 12:04:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:04:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 12:04:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 12:04:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 12:04:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 12:04:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 12:04:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 12:04:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:07,159 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 12:04:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:07,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435365107] [2023-11-26 12:04:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435365107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:07,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:07,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580205801] [2023-11-26 12:04:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:07,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:07,208 INFO L87 Difference]: Start difference. First operand has 279 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 161 states have internal predecessors, (204), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 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 12:04:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:09,984 INFO L93 Difference]: Finished difference Result 659 states and 1087 transitions. [2023-11-26 12:04:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 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 95 [2023-11-26 12:04:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:10,009 INFO L225 Difference]: With dead ends: 659 [2023-11-26 12:04:10,010 INFO L226 Difference]: Without dead ends: 386 [2023-11-26 12:04:10,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:10,025 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 230 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:10,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 313 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 12:04:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-26 12:04:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 276. [2023-11-26 12:04:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 157 states have (on average 1.2420382165605095) internal successors, (195), 159 states have internal predecessors, (195), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:04:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 383 transitions. [2023-11-26 12:04:10,143 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 383 transitions. Word has length 95 [2023-11-26 12:04:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 383 transitions. [2023-11-26 12:04:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 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 12:04:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 383 transitions. [2023-11-26 12:04:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 12:04:10,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:10,160 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] [2023-11-26 12:04:10,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:04:10,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:10,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1352893233, now seen corresponding path program 1 times [2023-11-26 12:04:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:10,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741763220] [2023-11-26 12:04:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:04:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:04:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:04:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 12:04:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:04:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 12:04:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 12:04:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 12:04:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 12:04:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 12:04:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 12:04:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,152 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 12:04:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741763220] [2023-11-26 12:04:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741763220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144431252] [2023-11-26 12:04:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:11,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:11,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:11,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:04:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:11,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:04:11,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-26 12:04:11,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144431252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:11,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:11,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-26 12:04:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631033245] [2023-11-26 12:04:11,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:11,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:04:11,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:04:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:11,883 INFO L87 Difference]: Start difference. First operand 276 states and 383 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-26 12:04:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:12,338 INFO L93 Difference]: Finished difference Result 523 states and 731 transitions. [2023-11-26 12:04:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 95 [2023-11-26 12:04:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:12,343 INFO L225 Difference]: With dead ends: 523 [2023-11-26 12:04:12,343 INFO L226 Difference]: Without dead ends: 278 [2023-11-26 12:04:12,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:04:12,346 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 45 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:12,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1314 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:04:12,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-26 12:04:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-11-26 12:04:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 158 states have (on average 1.240506329113924) internal successors, (196), 161 states have internal predecessors, (196), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-26 12:04:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 388 transitions. [2023-11-26 12:04:12,399 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 388 transitions. Word has length 95 [2023-11-26 12:04:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:12,400 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 388 transitions. [2023-11-26 12:04:12,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-26 12:04:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 388 transitions. [2023-11-26 12:04:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 12:04:12,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:12,404 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-26 12:04:12,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:12,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:12,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 659436281, now seen corresponding path program 1 times [2023-11-26 12:04:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:12,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285597072] [2023-11-26 12:04:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:12,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:04:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:04:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:04:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 12:04:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:04:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:04:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 12:04:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 12:04:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 12:04:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 12:04:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 12:04:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 12:04:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-26 12:04:13,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:13,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285597072] [2023-11-26 12:04:13,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285597072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264149525] [2023-11-26 12:04:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:13,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:13,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:13,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:04:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:14,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 2250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:04:14,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-26 12:04:14,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:14,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264149525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:14,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-26 12:04:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354961946] [2023-11-26 12:04:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:14,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:04:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:04:14,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:04:14,304 INFO L87 Difference]: Start difference. First operand 278 states and 388 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-26 12:04:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:14,969 INFO L93 Difference]: Finished difference Result 546 states and 778 transitions. [2023-11-26 12:04:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:04:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 103 [2023-11-26 12:04:14,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:14,973 INFO L225 Difference]: With dead ends: 546 [2023-11-26 12:04:14,973 INFO L226 Difference]: Without dead ends: 299 [2023-11-26 12:04:14,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:04:14,976 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 80 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1950 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:04:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-26 12:04:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2023-11-26 12:04:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 174 states have (on average 1.2528735632183907) internal successors, (218), 177 states have internal predecessors, (218), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-26 12:04:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 425 transitions. [2023-11-26 12:04:15,037 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 425 transitions. Word has length 103 [2023-11-26 12:04:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:15,038 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 425 transitions. [2023-11-26 12:04:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-26 12:04:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 425 transitions. [2023-11-26 12:04:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 12:04:15,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:15,041 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1] [2023-11-26 12:04:15,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:15,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:15,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:15,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2070297333, now seen corresponding path program 1 times [2023-11-26 12:04:15,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:15,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784148403] [2023-11-26 12:04:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:15,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:15,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155004385] [2023-11-26 12:04:15,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:15,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:15,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:15,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:15,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:04:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:16,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:04:16,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-26 12:04:16,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784148403] [2023-11-26 12:04:16,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155004385] [2023-11-26 12:04:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155004385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:04:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116919930] [2023-11-26 12:04:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:16,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:16,117 INFO L87 Difference]: Start difference. First operand 297 states and 425 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-26 12:04:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:16,658 INFO L93 Difference]: Finished difference Result 569 states and 822 transitions. [2023-11-26 12:04:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:04:16,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 116 [2023-11-26 12:04:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:16,664 INFO L225 Difference]: With dead ends: 569 [2023-11-26 12:04:16,665 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 12:04:16,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 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 12:04:16,675 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 64 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:16,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1608 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:04:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 12:04:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2023-11-26 12:04:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 174 states have (on average 1.2528735632183907) internal successors, (218), 177 states have internal predecessors, (218), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-26 12:04:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 425 transitions. [2023-11-26 12:04:16,717 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 425 transitions. Word has length 116 [2023-11-26 12:04:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:16,719 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 425 transitions. [2023-11-26 12:04:16,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-26 12:04:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 425 transitions. [2023-11-26 12:04:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-26 12:04:16,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:16,722 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 12:04:16,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:16,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:16,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:16,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash -548311210, now seen corresponding path program 1 times [2023-11-26 12:04:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132305614] [2023-11-26 12:04:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:17,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038833131] [2023-11-26 12:04:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:17,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:17,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:17,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:17,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:04:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:17,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:17,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-26 12:04:17,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:17,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132305614] [2023-11-26 12:04:17,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:17,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038833131] [2023-11-26 12:04:17,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038833131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:17,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:17,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619111942] [2023-11-26 12:04:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:17,820 INFO L87 Difference]: Start difference. First operand 297 states and 425 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 12:04:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:18,183 INFO L93 Difference]: Finished difference Result 571 states and 830 transitions. [2023-11-26 12:04:18,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2023-11-26 12:04:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:18,188 INFO L225 Difference]: With dead ends: 571 [2023-11-26 12:04:18,188 INFO L226 Difference]: Without dead ends: 305 [2023-11-26 12:04:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 12:04:18,191 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 3 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:18,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1064 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:04:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-26 12:04:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 301. [2023-11-26 12:04:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 178 states have (on average 1.247191011235955) internal successors, (222), 181 states have internal predecessors, (222), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-26 12:04:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2023-11-26 12:04:18,227 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 132 [2023-11-26 12:04:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:18,228 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2023-11-26 12:04:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 12:04:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2023-11-26 12:04:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-26 12:04:18,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:18,231 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 12:04:18,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:18,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:18,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:18,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -563829928, now seen corresponding path program 1 times [2023-11-26 12:04:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989481399] [2023-11-26 12:04:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:18,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051890143] [2023-11-26 12:04:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:18,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:18,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:18,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:18,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:04:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:19,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:19,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-26 12:04:19,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989481399] [2023-11-26 12:04:19,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051890143] [2023-11-26 12:04:19,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051890143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:19,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643049688] [2023-11-26 12:04:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:19,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:19,312 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-26 12:04:20,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:20,149 INFO L93 Difference]: Finished difference Result 607 states and 872 transitions. [2023-11-26 12:04:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:20,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 132 [2023-11-26 12:04:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:20,153 INFO L225 Difference]: With dead ends: 607 [2023-11-26 12:04:20,154 INFO L226 Difference]: Without dead ends: 337 [2023-11-26 12:04:20,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 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 12:04:20,156 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 115 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:20,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2150 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:04:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-26 12:04:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 301. [2023-11-26 12:04:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 178 states have (on average 1.247191011235955) internal successors, (222), 181 states have internal predecessors, (222), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-26 12:04:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2023-11-26 12:04:20,186 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 132 [2023-11-26 12:04:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2023-11-26 12:04:20,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-26 12:04:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2023-11-26 12:04:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 12:04:20,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:20,190 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:20,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:20,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:04:20,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:20,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2015178402, now seen corresponding path program 1 times [2023-11-26 12:04:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58672772] [2023-11-26 12:04:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:20,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:20,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679889748] [2023-11-26 12:04:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:20,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:20,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:20,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:20,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:04:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:21,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:04:21,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 12:04:21,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58672772] [2023-11-26 12:04:21,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679889748] [2023-11-26 12:04:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679889748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:04:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417128528] [2023-11-26 12:04:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:04:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:04:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:04:21,330 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 12:04:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:21,862 INFO L93 Difference]: Finished difference Result 547 states and 787 transitions. [2023-11-26 12:04:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:04:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 145 [2023-11-26 12:04:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:21,867 INFO L225 Difference]: With dead ends: 547 [2023-11-26 12:04:21,867 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 12:04:21,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:04:21,869 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 75 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:21,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1940 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:04:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 12:04:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-26 12:04:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 179 states have (on average 1.2458100558659218) internal successors, (223), 183 states have internal predecessors, (223), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2023-11-26 12:04:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 432 transitions. [2023-11-26 12:04:21,899 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 432 transitions. Word has length 145 [2023-11-26 12:04:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:21,900 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 432 transitions. [2023-11-26 12:04:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 12:04:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 432 transitions. [2023-11-26 12:04:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-26 12:04:21,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:21,903 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 12:04:21,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:22,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:04:22,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:22,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 556768050, now seen corresponding path program 1 times [2023-11-26 12:04:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:22,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347480947] [2023-11-26 12:04:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:22,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975353918] [2023-11-26 12:04:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:22,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:22,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:04:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:22,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-26 12:04:23,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347480947] [2023-11-26 12:04:23,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:23,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975353918] [2023-11-26 12:04:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975353918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:23,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:04:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450717899] [2023-11-26 12:04:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:04:23,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:04:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:04:23,184 INFO L87 Difference]: Start difference. First operand 303 states and 432 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-26 12:04:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:24,124 INFO L93 Difference]: Finished difference Result 567 states and 815 transitions. [2023-11-26 12:04:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:24,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 161 [2023-11-26 12:04:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:24,129 INFO L225 Difference]: With dead ends: 567 [2023-11-26 12:04:24,129 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 12:04:24,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 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 12:04:24,132 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 126 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:24,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2466 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:04:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 12:04:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2023-11-26 12:04:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 194 states have (on average 1.2525773195876289) internal successors, (243), 197 states have internal predecessors, (243), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-11-26 12:04:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 454 transitions. [2023-11-26 12:04:24,165 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 454 transitions. Word has length 161 [2023-11-26 12:04:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:24,167 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 454 transitions. [2023-11-26 12:04:24,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-26 12:04:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 454 transitions. [2023-11-26 12:04:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-26 12:04:24,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:24,171 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-26 12:04:24,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:24,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:24,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1388211072, now seen corresponding path program 1 times [2023-11-26 12:04:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996506198] [2023-11-26 12:04:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:24,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307249477] [2023-11-26 12:04:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:24,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:24,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:24,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:04:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:25,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:04:25,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-26 12:04:25,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996506198] [2023-11-26 12:04:25,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307249477] [2023-11-26 12:04:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307249477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:25,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:25,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:25,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147997189] [2023-11-26 12:04:25,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:25,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:25,424 INFO L87 Difference]: Start difference. First operand 319 states and 454 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 12:04:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:26,122 INFO L93 Difference]: Finished difference Result 587 states and 842 transitions. [2023-11-26 12:04:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 187 [2023-11-26 12:04:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:26,127 INFO L225 Difference]: With dead ends: 587 [2023-11-26 12:04:26,127 INFO L226 Difference]: Without dead ends: 325 [2023-11-26 12:04:26,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 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 12:04:26,130 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 94 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:26,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 2216 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:04:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-26 12:04:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2023-11-26 12:04:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 194 states have (on average 1.2525773195876289) internal successors, (243), 197 states have internal predecessors, (243), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-11-26 12:04:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 454 transitions. [2023-11-26 12:04:26,158 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 454 transitions. Word has length 187 [2023-11-26 12:04:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:26,159 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 454 transitions. [2023-11-26 12:04:26,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 12:04:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 454 transitions. [2023-11-26 12:04:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 12:04:26,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:26,163 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-26 12:04:26,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:26,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:26,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:26,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 739454688, now seen corresponding path program 1 times [2023-11-26 12:04:26,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:26,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025709152] [2023-11-26 12:04:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:26,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:26,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485808838] [2023-11-26 12:04:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:26,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:26,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:26,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:04:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:27,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:04:27,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-26 12:04:27,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025709152] [2023-11-26 12:04:27,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485808838] [2023-11-26 12:04:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485808838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:27,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:04:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265489779] [2023-11-26 12:04:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:04:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:04:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:27,538 INFO L87 Difference]: Start difference. First operand 319 states and 454 transitions. Second operand has 10 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-26 12:04:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:28,527 INFO L93 Difference]: Finished difference Result 599 states and 857 transitions. [2023-11-26 12:04:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:04:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 219 [2023-11-26 12:04:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:28,531 INFO L225 Difference]: With dead ends: 599 [2023-11-26 12:04:28,531 INFO L226 Difference]: Without dead ends: 337 [2023-11-26 12:04:28,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:04:28,535 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 145 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:28,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 2720 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 12:04:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-26 12:04:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 301. [2023-11-26 12:04:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 178 states have (on average 1.247191011235955) internal successors, (222), 181 states have internal predecessors, (222), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2023-11-26 12:04:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 427 transitions. [2023-11-26 12:04:28,562 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 427 transitions. Word has length 219 [2023-11-26 12:04:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:28,566 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 427 transitions. [2023-11-26 12:04:28,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-26 12:04:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 427 transitions. [2023-11-26 12:04:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-26 12:04:28,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:28,571 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:28,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:04:28,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:28,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -996605116, now seen corresponding path program 1 times [2023-11-26 12:04:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996206282] [2023-11-26 12:04:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:28,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480397406] [2023-11-26 12:04:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:28,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:28,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:04:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:29,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-26 12:04:29,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:29,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:04:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-26 12:04:30,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996206282] [2023-11-26 12:04:30,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480397406] [2023-11-26 12:04:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480397406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:30,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:30,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 12:04:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485554046] [2023-11-26 12:04:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:30,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:04:30,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:04:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:04:30,205 INFO L87 Difference]: Start difference. First operand 301 states and 427 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-26 12:04:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:32,054 INFO L93 Difference]: Finished difference Result 606 states and 881 transitions. [2023-11-26 12:04:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:04:32,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 245 [2023-11-26 12:04:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:32,059 INFO L225 Difference]: With dead ends: 606 [2023-11-26 12:04:32,059 INFO L226 Difference]: Without dead ends: 336 [2023-11-26 12:04:32,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:04:32,062 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 103 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:32,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2814 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 12:04:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-26 12:04:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 320. [2023-11-26 12:04:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 196 states have (on average 1.2551020408163265) internal successors, (246), 198 states have internal predecessors, (246), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2023-11-26 12:04:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 462 transitions. [2023-11-26 12:04:32,094 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 462 transitions. Word has length 245 [2023-11-26 12:04:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 462 transitions. [2023-11-26 12:04:32,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-26 12:04:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 462 transitions. [2023-11-26 12:04:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-26 12:04:32,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:32,100 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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] [2023-11-26 12:04:32,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 12:04:32,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:32,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1303405116, now seen corresponding path program 1 times [2023-11-26 12:04:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:32,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269895099] [2023-11-26 12:04:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:32,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551417795] [2023-11-26 12:04:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:32,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:32,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:32,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:04:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:33,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 3374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:33,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-26 12:04:33,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269895099] [2023-11-26 12:04:33,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:33,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551417795] [2023-11-26 12:04:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551417795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:33,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758877555] [2023-11-26 12:04:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:33,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:33,446 INFO L87 Difference]: Start difference. First operand 320 states and 462 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 12:04:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:33,822 INFO L93 Difference]: Finished difference Result 609 states and 908 transitions. [2023-11-26 12:04:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 245 [2023-11-26 12:04:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:33,827 INFO L225 Difference]: With dead ends: 609 [2023-11-26 12:04:33,827 INFO L226 Difference]: Without dead ends: 320 [2023-11-26 12:04:33,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 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 12:04:33,831 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 7 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:33,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1072 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:04:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-26 12:04:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-11-26 12:04:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 196 states have (on average 1.25) internal successors, (245), 198 states have internal predecessors, (245), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2023-11-26 12:04:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 461 transitions. [2023-11-26 12:04:33,860 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 461 transitions. Word has length 245 [2023-11-26 12:04:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:33,860 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 461 transitions. [2023-11-26 12:04:33,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 12:04:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 461 transitions. [2023-11-26 12:04:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-26 12:04:33,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:33,865 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 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] [2023-11-26 12:04:33,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 12:04:34,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 12:04:34,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:34,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash -931473232, now seen corresponding path program 1 times [2023-11-26 12:04:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643852316] [2023-11-26 12:04:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:34,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:34,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679697687] [2023-11-26 12:04:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:34,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:34,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:34,199 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:34,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:04:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:35,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:04:35,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-26 12:04:35,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643852316] [2023-11-26 12:04:35,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679697687] [2023-11-26 12:04:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679697687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:04:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59537149] [2023-11-26 12:04:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:35,317 INFO L87 Difference]: Start difference. First operand 320 states and 461 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 12:04:40,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 12:04:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:40,803 INFO L93 Difference]: Finished difference Result 645 states and 936 transitions. [2023-11-26 12:04:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:04:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 249 [2023-11-26 12:04:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:40,808 INFO L225 Difference]: With dead ends: 645 [2023-11-26 12:04:40,808 INFO L226 Difference]: Without dead ends: 352 [2023-11-26 12:04:40,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:04:40,811 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 16 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:40,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1635 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-26 12:04:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-26 12:04:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 332. [2023-11-26 12:04:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 208 states have (on average 1.2451923076923077) internal successors, (259), 210 states have internal predecessors, (259), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2023-11-26 12:04:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 475 transitions. [2023-11-26 12:04:40,840 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 475 transitions. Word has length 249 [2023-11-26 12:04:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:40,841 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 475 transitions. [2023-11-26 12:04:40,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 12:04:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 475 transitions. [2023-11-26 12:04:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-26 12:04:40,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:40,845 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 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] [2023-11-26 12:04:40,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:41,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:04:41,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:41,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash -586645070, now seen corresponding path program 1 times [2023-11-26 12:04:41,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:41,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514856762] [2023-11-26 12:04:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:41,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:41,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093433499] [2023-11-26 12:04:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:41,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:41,169 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:41,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:04:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:42,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:42,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-26 12:04:42,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:42,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514856762] [2023-11-26 12:04:42,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093433499] [2023-11-26 12:04:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093433499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:42,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177515661] [2023-11-26 12:04:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:42,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:04:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:04:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:42,170 INFO L87 Difference]: Start difference. First operand 332 states and 475 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 12:04:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:43,740 INFO L93 Difference]: Finished difference Result 633 states and 934 transitions. [2023-11-26 12:04:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:04:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 249 [2023-11-26 12:04:43,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:43,745 INFO L225 Difference]: With dead ends: 633 [2023-11-26 12:04:43,746 INFO L226 Difference]: Without dead ends: 332 [2023-11-26 12:04:43,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:04:43,749 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 10 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:43,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1349 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 12:04:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-26 12:04:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-26 12:04:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 208 states have (on average 1.2403846153846154) internal successors, (258), 210 states have internal predecessors, (258), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2023-11-26 12:04:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 474 transitions. [2023-11-26 12:04:43,780 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 474 transitions. Word has length 249 [2023-11-26 12:04:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:43,780 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 474 transitions. [2023-11-26 12:04:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 12:04:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 474 transitions. [2023-11-26 12:04:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-26 12:04:43,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:43,785 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:43,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:04:44,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:44,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 809059518, now seen corresponding path program 1 times [2023-11-26 12:04:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912685985] [2023-11-26 12:04:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:44,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934655999] [2023-11-26 12:04:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:44,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:44,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:04:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:45,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 3385 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:04:45,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-26 12:04:45,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912685985] [2023-11-26 12:04:45,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:04:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934655999] [2023-11-26 12:04:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934655999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:45,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:45,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550598912] [2023-11-26 12:04:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:04:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:04:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:45,178 INFO L87 Difference]: Start difference. First operand 332 states and 474 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 12:04:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:45,512 INFO L93 Difference]: Finished difference Result 661 states and 952 transitions. [2023-11-26 12:04:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:04:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 245 [2023-11-26 12:04:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:45,517 INFO L225 Difference]: With dead ends: 661 [2023-11-26 12:04:45,517 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 12:04:45,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:45,521 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 6 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:45,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1442 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:04:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 12:04:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 352. [2023-11-26 12:04:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 228 states have (on average 1.236842105263158) internal successors, (282), 230 states have internal predecessors, (282), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2023-11-26 12:04:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 498 transitions. [2023-11-26 12:04:45,550 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 498 transitions. Word has length 245 [2023-11-26 12:04:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:45,550 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 498 transitions. [2023-11-26 12:04:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-26 12:04:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 498 transitions. [2023-11-26 12:04:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-26 12:04:45,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:45,555 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:45,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340c6b5-627a-4c5d-918c-110b8f160f18/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0