./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:18:14,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:18:14,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:18:14,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:18:14,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:18:14,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:18:14,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:18:14,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:18:14,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:18:14,727 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:18:14,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:18:14,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:18:14,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:18:14,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:18:14,733 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:18:14,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:18:14,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:18:14,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:18:14,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:18:14,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:18:14,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:18:14,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:18:14,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:18:14,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:18:14,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:18:14,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:18:14,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:18:14,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:18:14,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:14,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:18:14,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:18:14,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:18:14,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:18:14,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:18:14,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:18:14,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:18:14,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:18:14,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:18:14,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:18:14,743 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_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2023-11-21 22:18:15,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:18:15,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:18:15,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:18:15,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:18:15,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:18:15,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2023-11-21 22:18:18,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:18:18,829 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:18:18,830 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2023-11-21 22:18:18,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/data/5fd57e94d/a9e1b583d5e8415a918ce41c09d1e90b/FLAGe74dec6a2 [2023-11-21 22:18:18,908 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/data/5fd57e94d/a9e1b583d5e8415a918ce41c09d1e90b [2023-11-21 22:18:18,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:18:18,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:18:18,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:18,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:18:18,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:18:18,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:18" (1/1) ... [2023-11-21 22:18:18,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248d718b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:18, skipping insertion in model container [2023-11-21 22:18:18,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:18" (1/1) ... [2023-11-21 22:18:19,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:18:19,446 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_5a78091c-30d0-4085-b8d0-594f6ed306c5/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2023-11-21 22:18:19,457 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_5a78091c-30d0-4085-b8d0-594f6ed306c5/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2023-11-21 22:18:20,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,797 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,812 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,813 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,814 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,815 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,421 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:18:21,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:18:21,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:18:21,426 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:18:21,428 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:18:21,429 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:18:21,430 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:18:21,431 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:18:21,432 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:18:21,433 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:18:22,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,211 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,212 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:22,312 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:18:22,334 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_5a78091c-30d0-4085-b8d0-594f6ed306c5/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2023-11-21 22:18:22,334 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_5a78091c-30d0-4085-b8d0-594f6ed306c5/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2023-11-21 22:18:22,386 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,401 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,407 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,459 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:18:22,461 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:18:22,462 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:18:22,463 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:18:22,465 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:18:22,466 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:18:22,467 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:18:22,467 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:18:22,468 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:18:22,469 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:18:22,523 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-21 22:18:22,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:22,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:23,112 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,112 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,112 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,112 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,113 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,113 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,113 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,113 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,113 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,114 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,115 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,115 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,115 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:23,124 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:18:23,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23 WrapperNode [2023-11-21 22:18:23,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:23,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:23,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:18:23,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:18:23,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,495 INFO L138 Inliner]: procedures = 772, calls = 2447, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 623 [2023-11-21 22:18:23,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:23,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:18:23,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:18:23,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:18:23,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,540 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,644 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 22:18:23,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:18:23,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:18:23,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:18:23,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:18:23,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (1/1) ... [2023-11-21 22:18:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:23,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:23,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:18:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:18:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 22:18:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:18:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 22:18:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 22:18:23,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:18:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-21 22:18:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:18:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:18:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:18:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:18:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 22:18:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 22:18:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:18:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:18:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:18:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 22:18:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 22:18:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:18:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 22:18:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 22:18:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:18:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-21 22:18:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-21 22:18:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:18:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2023-11-21 22:18:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2023-11-21 22:18:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-21 22:18:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-21 22:18:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2023-11-21 22:18:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2023-11-21 22:18:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:18:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:18:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-21 22:18:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-21 22:18:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-21 22:18:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-21 22:18:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:18:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 22:18:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 22:18:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 22:18:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 22:18:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:18:24,240 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:18:24,244 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:18:24,459 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2023-11-21 22:18:25,673 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:18:26,039 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:18:26,039 INFO L308 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-21 22:18:26,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:26 BoogieIcfgContainer [2023-11-21 22:18:26,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:18:26,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:18:26,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:18:26,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:18:26,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:18:18" (1/3) ... [2023-11-21 22:18:26,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343555cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:26, skipping insertion in model container [2023-11-21 22:18:26,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:23" (2/3) ... [2023-11-21 22:18:26,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343555cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:26, skipping insertion in model container [2023-11-21 22:18:26,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:26" (3/3) ... [2023-11-21 22:18:26,061 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2023-11-21 22:18:26,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:18:26,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:18:26,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:18:26,206 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;@46352eb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:18:26,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:18:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-21 22:18:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-21 22:18:26,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:26,230 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:26,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:26,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1720379481, now seen corresponding path program 1 times [2023-11-21 22:18:26,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:26,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356006222] [2023-11-21 22:18:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:26,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:18:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374256067] [2023-11-21 22:18:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:26,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:26,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:18:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:27,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 22:18:27,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:18:27,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356006222] [2023-11-21 22:18:27,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:18:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374256067] [2023-11-21 22:18:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374256067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101700221] [2023-11-21 22:18:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:27,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:18:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:18:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:18:27,568 INFO L87 Difference]: Start difference. First operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 22:18:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:27,809 INFO L93 Difference]: Finished difference Result 199 states and 263 transitions. [2023-11-21 22:18:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:18:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2023-11-21 22:18:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:27,823 INFO L225 Difference]: With dead ends: 199 [2023-11-21 22:18:27,823 INFO L226 Difference]: Without dead ends: 129 [2023-11-21 22:18:27,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:18:27,831 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:27,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:18:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-21 22:18:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-21 22:18:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 22:18:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2023-11-21 22:18:27,926 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 110 [2023-11-21 22:18:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:27,931 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2023-11-21 22:18:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 22:18:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2023-11-21 22:18:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-21 22:18:27,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:27,945 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:27,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:28,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:28,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1776813923, now seen corresponding path program 1 times [2023-11-21 22:18:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686259982] [2023-11-21 22:18:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:28,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:28,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:18:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306839032] [2023-11-21 22:18:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:28,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:28,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:28,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:18:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:29,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:18:29,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:18:29,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-21 22:18:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686259982] [2023-11-21 22:18:29,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:18:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306839032] [2023-11-21 22:18:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306839032] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:18:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-21 22:18:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073863639] [2023-11-21 22:18:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:18:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:18:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:18:29,717 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 22:18:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:30,554 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2023-11-21 22:18:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:18:30,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 115 [2023-11-21 22:18:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:30,559 INFO L225 Difference]: With dead ends: 178 [2023-11-21 22:18:30,559 INFO L226 Difference]: Without dead ends: 131 [2023-11-21 22:18:30,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:18:30,561 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:30,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 677 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:18:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-21 22:18:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-21 22:18:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-21 22:18:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2023-11-21 22:18:30,583 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 115 [2023-11-21 22:18:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:30,584 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2023-11-21 22:18:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 22:18:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2023-11-21 22:18:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-21 22:18:30,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:30,587 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:30,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:30,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:30,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:30,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1123294007, now seen corresponding path program 1 times [2023-11-21 22:18:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803742973] [2023-11-21 22:18:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:30,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:30,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:18:30,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209897933] [2023-11-21 22:18:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:30,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:30,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:30,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:30,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:18:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:31,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:18:31,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-21 22:18:31,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803742973] [2023-11-21 22:18:31,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:18:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209897933] [2023-11-21 22:18:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209897933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:31,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:18:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697140814] [2023-11-21 22:18:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:31,673 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-21 22:18:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:32,227 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2023-11-21 22:18:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:18:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2023-11-21 22:18:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:32,232 INFO L225 Difference]: With dead ends: 256 [2023-11-21 22:18:32,232 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 22:18:32,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:18:32,235 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:32,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 548 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:18:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 22:18:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-21 22:18:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-21 22:18:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2023-11-21 22:18:32,265 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 116 [2023-11-21 22:18:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:32,265 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2023-11-21 22:18:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-21 22:18:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2023-11-21 22:18:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-21 22:18:32,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:32,268 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:32,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-21 22:18:32,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:32,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:32,511 INFO L85 PathProgramCache]: Analyzing trace with hash -945624423, now seen corresponding path program 1 times [2023-11-21 22:18:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364291592] [2023-11-21 22:18:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:32,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:18:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:18:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:18:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:18:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:18:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:18:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:18:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:18:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:18:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:18:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-21 22:18:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:18:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-21 22:18:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-21 22:18:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-21 22:18:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-21 22:18:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-21 22:18:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:35,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364291592] [2023-11-21 22:18:35,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364291592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:35,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174917129] [2023-11-21 22:18:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:35,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:35,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:35,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:35,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:18:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:36,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-21 22:18:36,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:36,633 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 22 treesize of output 1 [2023-11-21 22:18:37,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2023-11-21 22:18:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-21 22:18:37,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174917129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:18:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 25 [2023-11-21 22:18:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457756691] [2023-11-21 22:18:37,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:37,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 22:18:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 22:18:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:18:37,409 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 15 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-21 22:18:40,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:42,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:44,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-21 22:18:46,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:48,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:50,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:52,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:54,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:56,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:18:58,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:00,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:02,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:04,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:06,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:07,936 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2023-11-21 22:19:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 22:19:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 124 [2023-11-21 22:19:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:07,939 INFO L225 Difference]: With dead ends: 249 [2023-11-21 22:19:07,940 INFO L226 Difference]: Without dead ends: 200 [2023-11-21 22:19:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 151 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-11-21 22:19:07,942 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 117 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 57 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:07,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1095 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 795 Invalid, 14 Unknown, 0 Unchecked, 30.1s Time] [2023-11-21 22:19:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-21 22:19:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 196. [2023-11-21 22:19:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 115 states have internal predecessors, (130), 53 states have call successors, (53), 26 states have call predecessors, (53), 31 states have return successors, (56), 54 states have call predecessors, (56), 51 states have call successors, (56) [2023-11-21 22:19:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 239 transitions. [2023-11-21 22:19:07,970 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 239 transitions. Word has length 124 [2023-11-21 22:19:07,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:07,971 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 239 transitions. [2023-11-21 22:19:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-21 22:19:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 239 transitions. [2023-11-21 22:19:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-21 22:19:07,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:07,974 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:08,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:08,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:08,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:08,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2074964991, now seen corresponding path program 1 times [2023-11-21 22:19:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103038515] [2023-11-21 22:19:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:19:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:19:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:19:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:19:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:19:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:19:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:19:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:19:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:19:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-21 22:19:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:19:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-21 22:19:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-21 22:19:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-21 22:19:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103038515] [2023-11-21 22:19:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103038515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160465923] [2023-11-21 22:19:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:10,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:10,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:10,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:10,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a78091c-30d0-4085-b8d0-594f6ed306c5/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:19:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:11,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-21 22:19:11,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:11,405 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 22 treesize of output 1 [2023-11-21 22:19:11,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-21 22:19:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-21 22:19:11,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:19:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160465923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:11,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:19:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 24 [2023-11-21 22:19:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247172174] [2023-11-21 22:19:11,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:19:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:19:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:19:11,896 INFO L87 Difference]: Start difference. First operand 196 states and 239 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 7 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23)