./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ --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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:29:09,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:29:09,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 22:29:09,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:29:09,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:29:09,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:29:09,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:29:09,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:29:09,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:29:09,831 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:29:09,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:29:09,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:29:09,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:29:09,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:29:09,834 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:29:09,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:29:09,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:29:09,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:29:09,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:29:09,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:29:09,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:29:09,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:29:09,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:29:09,854 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:29:09,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:29:09,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:29:09,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:29:09,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:29:09,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:09,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:29:09,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:29:09,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:29:09,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:29:09,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:29:09,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:29:09,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:29:09,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:29:09,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:29:09,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:29:09,859 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_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2023-11-23 22:29:10,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:29:10,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:29:10,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:29:10,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:29:10,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:29:10,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2023-11-23 22:29:13,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:29:14,301 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:29:14,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2023-11-23 22:29:14,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/data/a72f9cff0/1d97dc11fdb747dda5731f7122e15b00/FLAGfbac9750a [2023-11-23 22:29:14,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/data/a72f9cff0/1d97dc11fdb747dda5731f7122e15b00 [2023-11-23 22:29:14,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:29:14,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:29:14,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:14,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:29:14,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:29:14,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:14" (1/1) ... [2023-11-23 22:29:14,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6811a83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:14, skipping insertion in model container [2023-11-23 22:29:14,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:14" (1/1) ... [2023-11-23 22:29:14,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:29:14,904 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_67ff9898-222c-4496-a329-717bb7e174f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2023-11-23 22:29:14,913 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_67ff9898-222c-4496-a329-717bb7e174f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2023-11-23 22:29:16,185 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,210 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,213 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:16,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 22:29:16,884 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 22:29:16,885 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 22:29:16,887 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 22:29:16,889 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 22:29:16,890 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 22:29:16,891 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 22:29:16,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 22:29:16,893 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 22:29:16,894 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 22:29:17,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:17,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:29:17,639 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_67ff9898-222c-4496-a329-717bb7e174f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2023-11-23 22:29:17,640 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_67ff9898-222c-4496-a329-717bb7e174f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2023-11-23 22:29:17,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,723 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,803 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 22:29:17,805 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 22:29:17,806 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 22:29:17,807 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 22:29:17,808 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 22:29:17,809 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 22:29:17,809 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 22:29:17,810 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 22:29:17,811 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 22:29:17,815 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 22:29:17,969 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 22:29:17,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:29:17,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 22:29:18,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:18,383 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,383 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,383 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,383 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,383 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,384 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,384 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,384 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,385 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,385 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,385 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,385 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,386 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,386 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,387 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,387 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,387 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,387 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:18,396 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:29:18,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18 WrapperNode [2023-11-23 22:29:18,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:18,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:18,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:29:18,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:29:18,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,645 INFO L138 Inliner]: procedures = 690, calls = 2669, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2023-11-23 22:29:18,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:18,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:29:18,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:29:18,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:29:18,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,672 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,752 INFO L189 HeapSplitter]: Split 570 memory accesses to 7 slices as follows [2, 6, 256, 236, 9, 58, 3] [2023-11-23 22:29:18,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:29:18,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:29:18,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:29:18,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:29:18,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (1/1) ... [2023-11-23 22:29:18,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:18,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:18,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:29:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:29:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 22:29:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 22:29:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 22:29:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:29:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 22:29:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 22:29:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:29:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:29:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:29:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:29:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:29:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:29:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:29:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 22:29:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 22:29:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:29:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:29:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 22:29:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:29:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 22:29:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 22:29:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 22:29:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 22:29:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:29:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:29:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 22:29:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 22:29:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 22:29:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 22:29:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:29:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:29:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:29:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 22:29:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 22:29:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-23 22:29:19,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-23 22:29:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 22:29:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 22:29:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 22:29:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 22:29:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 22:29:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 22:29:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 22:29:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 22:29:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 22:29:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 22:29:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 22:29:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 22:29:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 22:29:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:29:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:29:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:29:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:29:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:29:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:29:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:29:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 22:29:19,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 22:29:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:29:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:29:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:29:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:29:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:29:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:29:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:29:19,414 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:29:19,417 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:29:21,044 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:29:21,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:29:21,311 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:29:21,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:21 BoogieIcfgContainer [2023-11-23 22:29:21,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:29:21,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:29:21,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:29:21,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:29:21,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:29:14" (1/3) ... [2023-11-23 22:29:21,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2bef33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:21, skipping insertion in model container [2023-11-23 22:29:21,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:18" (2/3) ... [2023-11-23 22:29:21,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2bef33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:21, skipping insertion in model container [2023-11-23 22:29:21,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:21" (3/3) ... [2023-11-23 22:29:21,333 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2023-11-23 22:29:21,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:29:21,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:29:21,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:29:21,466 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;@6b033f27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:29:21,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:29:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 80 states have internal predecessors, (100), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 22:29:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 22:29:21,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:21,507 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:21,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:21,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1582873524, now seen corresponding path program 1 times [2023-11-23 22:29:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509010093] [2023-11-23 22:29:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:29:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:29:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 22:29:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 22:29:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 22:29:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 22:29:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 22:29:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 22:29:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509010093] [2023-11-23 22:29:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509010093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:29:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966571426] [2023-11-23 22:29:23,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:29:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:29:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:23,287 INFO L87 Difference]: Start difference. First operand has 140 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 80 states have internal predecessors, (100), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 22:29:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:25,530 INFO L93 Difference]: Finished difference Result 279 states and 414 transitions. [2023-11-23 22:29:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:29:25,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2023-11-23 22:29:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:25,548 INFO L225 Difference]: With dead ends: 279 [2023-11-23 22:29:25,548 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 22:29:25,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:25,559 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 77 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:25,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 167 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 22:29:25,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 22:29:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2023-11-23 22:29:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 79 states have internal predecessors, (97), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-23 22:29:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2023-11-23 22:29:25,640 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 103 [2023-11-23 22:29:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2023-11-23 22:29:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 22:29:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2023-11-23 22:29:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 22:29:25,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:25,646 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:25,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:29:25,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:25,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1954925258, now seen corresponding path program 1 times [2023-11-23 22:29:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787816419] [2023-11-23 22:29:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:29:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:29:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 22:29:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 22:29:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 22:29:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 22:29:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 22:29:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 22:29:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787816419] [2023-11-23 22:29:27,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787816419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:29:27,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403759888] [2023-11-23 22:29:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:27,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:27,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:27,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:29:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:28,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:29:28,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 22:29:28,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403759888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:28,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:29:28,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 22:29:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817458530] [2023-11-23 22:29:28,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:29:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:29:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:29:28,447 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 22:29:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:29,561 INFO L93 Difference]: Finished difference Result 272 states and 375 transitions. [2023-11-23 22:29:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:29:29,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 103 [2023-11-23 22:29:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:29,569 INFO L225 Difference]: With dead ends: 272 [2023-11-23 22:29:29,569 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 22:29:29,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:29:29,578 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 44 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:29,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 574 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 22:29:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 22:29:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 22:29:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 1.240506329113924) internal successors, (98), 81 states have internal predecessors, (98), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2023-11-23 22:29:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 195 transitions. [2023-11-23 22:29:29,638 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 195 transitions. Word has length 103 [2023-11-23 22:29:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:29,639 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 195 transitions. [2023-11-23 22:29:29,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 22:29:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 195 transitions. [2023-11-23 22:29:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 22:29:29,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:29,649 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 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] [2023-11-23 22:29:29,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:29,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:29,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:29,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2141359841, now seen corresponding path program 1 times [2023-11-23 22:29:29,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:29,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331053842] [2023-11-23 22:29:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:29,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 22:29:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 22:29:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 22:29:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 22:29:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 22:29:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 22:29:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 22:29:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 22:29:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331053842] [2023-11-23 22:29:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331053842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:29:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391542895] [2023-11-23 22:29:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:31,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:31,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:31,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:29:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:32,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:29:32,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 22:29:32,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391542895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:29:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-23 22:29:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076724247] [2023-11-23 22:29:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:29:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:29:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:29:32,555 INFO L87 Difference]: Start difference. First operand 140 states and 195 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 22:29:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:33,753 INFO L93 Difference]: Finished difference Result 232 states and 324 transitions. [2023-11-23 22:29:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:29:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 109 [2023-11-23 22:29:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:33,761 INFO L225 Difference]: With dead ends: 232 [2023-11-23 22:29:33,761 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 22:29:33,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:29:33,766 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 44 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:33,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 732 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 22:29:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 22:29:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 22:29:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 1.240506329113924) internal successors, (98), 81 states have internal predecessors, (98), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2023-11-23 22:29:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2023-11-23 22:29:33,798 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 109 [2023-11-23 22:29:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:33,799 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2023-11-23 22:29:33,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 22:29:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2023-11-23 22:29:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 22:29:33,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:33,802 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 22:29:33,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 22:29:34,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:34,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167433, now seen corresponding path program 2 times [2023-11-23 22:29:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864087962] [2023-11-23 22:29:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 22:29:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 22:29:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 22:29:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 22:29:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 22:29:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 22:29:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 22:29:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 22:29:35,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:35,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864087962] [2023-11-23 22:29:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864087962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:29:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245894343] [2023-11-23 22:29:35,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:29:35,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:35,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:35,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:29:36,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:29:36,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:29:36,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:29:36,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 22:29:36,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:36,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245894343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:36,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:29:36,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 22:29:36,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200158962] [2023-11-23 22:29:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:36,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:29:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:29:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-23 22:29:36,407 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 8 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:29:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:38,178 INFO L93 Difference]: Finished difference Result 151 states and 211 transitions. [2023-11-23 22:29:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:29:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 121 [2023-11-23 22:29:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:38,181 INFO L225 Difference]: With dead ends: 151 [2023-11-23 22:29:38,181 INFO L226 Difference]: Without dead ends: 149 [2023-11-23 22:29:38,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:29:38,183 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 23 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:38,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1209 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 22:29:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-23 22:29:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2023-11-23 22:29:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 87 states have internal predecessors, (103), 47 states have call successors, (47), 14 states have call predecessors, (47), 16 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2023-11-23 22:29:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 208 transitions. [2023-11-23 22:29:38,207 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 208 transitions. Word has length 121 [2023-11-23 22:29:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:38,208 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 208 transitions. [2023-11-23 22:29:38,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 22:29:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 208 transitions. [2023-11-23 22:29:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 22:29:38,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:38,211 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:38,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:38,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:38,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1242935485, now seen corresponding path program 1 times [2023-11-23 22:29:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:38,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71572888] [2023-11-23 22:29:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:38,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 22:29:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 22:29:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 22:29:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 22:29:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 22:29:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 22:29:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 22:29:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 22:29:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71572888] [2023-11-23 22:29:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71572888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:29:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989270876] [2023-11-23 22:29:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:39,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:39,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:40,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:29:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:40,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:29:40,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 22:29:40,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989270876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:40,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:29:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-23 22:29:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117637424] [2023-11-23 22:29:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:40,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:29:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:29:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:29:40,834 INFO L87 Difference]: Start difference. First operand 148 states and 208 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 22:29:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:42,467 INFO L93 Difference]: Finished difference Result 262 states and 368 transitions. [2023-11-23 22:29:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:29:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 125 [2023-11-23 22:29:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:42,471 INFO L225 Difference]: With dead ends: 262 [2023-11-23 22:29:42,471 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 22:29:42,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:29:42,473 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 43 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:42,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 750 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 22:29:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 22:29:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-23 22:29:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 83 states have (on average 1.216867469879518) internal successors, (101), 85 states have internal predecessors, (101), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2023-11-23 22:29:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 202 transitions. [2023-11-23 22:29:42,497 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 202 transitions. Word has length 125 [2023-11-23 22:29:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:42,498 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 202 transitions. [2023-11-23 22:29:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 22:29:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 202 transitions. [2023-11-23 22:29:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 22:29:42,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:42,501 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:42,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:42,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:42,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1146334990, now seen corresponding path program 1 times [2023-11-23 22:29:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:42,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683462688] [2023-11-23 22:29:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:42,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:29:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:29:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:29:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 22:29:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 22:29:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:29:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:29:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 22:29:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 22:29:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 22:29:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 22:29:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 22:29:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:29:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:29:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 22:29:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 22:29:50,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:50,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683462688] [2023-11-23 22:29:50,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683462688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:29:50,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273170942] [2023-11-23 22:29:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:50,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:50,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:50,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:50,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ff9898-222c-4496-a329-717bb7e174f3/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:29:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:51,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 22:29:51,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:51,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 22:29:52,350 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-23 22:29:52,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2023-11-23 22:29:52,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-23 22:29:52,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-23 22:29:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 22:29:53,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273170942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:53,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:29:53,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 35 [2023-11-23 22:29:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329068010] [2023-11-23 22:29:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:53,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 22:29:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 22:29:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 22:29:53,242 INFO L87 Difference]: Start difference. First operand 146 states and 202 transitions. Second operand has 18 states, 14 states have (on average 4.928571428571429) internal successors, (69), 16 states have internal predecessors, (69), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19)