./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4f0a7d90baaf3c6f383556a6db0dccf9ba6f55d8bb50a635d310d7c96d51ae8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:20,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:20,279 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 12:00:20,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:20,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:20,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:20,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:20,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:20,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:20,342 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:20,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:20,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:20,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:20,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:20,348 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:20,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:20,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:20,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:20,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:20,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:20,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:20,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:20,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:20,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:20,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:20,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:20,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:20,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:20,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:20,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:20,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:20,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:20,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:20,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:20,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:20,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:20,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:20,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:20,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:20,361 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_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f0a7d90baaf3c6f383556a6db0dccf9ba6f55d8bb50a635d310d7c96d51ae8 [2023-11-26 12:00:20,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:20,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:20,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:20,737 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:20,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:20,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i [2023-11-26 12:00:23,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:24,641 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:24,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i [2023-11-26 12:00:24,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/data/f52884264/d9d76efae55e41c2ba72f1ed6252e5cd/FLAG24704493f [2023-11-26 12:00:24,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/data/f52884264/d9d76efae55e41c2ba72f1ed6252e5cd [2023-11-26 12:00:24,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:24,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:24,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:24,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:24,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:24,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:24" (1/1) ... [2023-11-26 12:00:24,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59044124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:24, skipping insertion in model container [2023-11-26 12:00:24,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:24" (1/1) ... [2023-11-26 12:00:24,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:25,330 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_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4494,4507] [2023-11-26 12:00:25,342 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_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4554,4567] [2023-11-26 12:00:26,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,803 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,832 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:26,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:27,381 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:00:27,383 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:00:27,385 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:00:27,386 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:00:27,388 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:00:27,389 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:00:27,390 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:00:27,391 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:00:27,392 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:00:27,393 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:00:28,051 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,096 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:28,247 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:28,270 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_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4494,4507] [2023-11-26 12:00:28,271 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_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4554,4567] [2023-11-26 12:00:28,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,354 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,354 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,356 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,356 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,398 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:00:28,399 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:00:28,400 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:00:28,401 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:00:28,403 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:00:28,403 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:00:28,404 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:00:28,407 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:00:28,408 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:00:28,408 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:00:28,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7553-7564] [2023-11-26 12:00:28,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:00:28,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:29,147 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,148 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,148 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,148 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,148 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,149 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,150 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,150 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,150 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,150 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,150 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,151 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:29,159 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:29,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29 WrapperNode [2023-11-26 12:00:29,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:29,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:29,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:29,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:29,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,352 INFO L138 Inliner]: procedures = 773, calls = 2441, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 611 [2023-11-26 12:00:29,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:29,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:29,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:29,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:29,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,559 INFO L175 MemorySlicer]: Split 293 memory accesses to 9 slices as follows [8, 2, 5, 236, 2, 34, 1, 2, 3]. 81 percent of accesses are in the largest equivalence class. The 246 initializations are split as follows [0, 2, 5, 236, 0, 0, 0, 0, 3]. The 9 writes are split as follows [1, 0, 0, 0, 1, 5, 1, 1, 0]. [2023-11-26 12:00:29,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:29,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:29,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:29,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:29,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (1/1) ... [2023-11-26 12:00:29,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:29,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:29,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2023-11-26 12:00:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2023-11-26 12:00:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 12:00:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 12:00:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 12:00:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 12:00:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 12:00:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:00:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 12:00:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 12:00:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:00:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:00:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-26 12:00:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-26 12:00:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2023-11-26 12:00:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2023-11-26 12:00:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 12:00:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 12:00:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 12:00:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 12:00:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 12:00:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 12:00:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 12:00:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-26 12:00:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:00:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:00:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 12:00:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 12:00:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 12:00:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 12:00:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 12:00:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 12:00:29,774 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 12:00:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 12:00:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 12:00:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 12:00:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 12:00:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-26 12:00:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-26 12:00:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-26 12:00:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-26 12:00:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-26 12:00:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-26 12:00:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 12:00:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 12:00:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:00:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:00:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-26 12:00:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 12:00:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 12:00:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-26 12:00:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:00:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 12:00:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 12:00:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 12:00:30,250 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:30,254 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:31,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:31,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:31,392 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 12:00:31,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:31 BoogieIcfgContainer [2023-11-26 12:00:31,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:31,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:31,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:31,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:31,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:24" (1/3) ... [2023-11-26 12:00:31,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125d0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:31, skipping insertion in model container [2023-11-26 12:00:31,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:29" (2/3) ... [2023-11-26 12:00:31,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125d0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:31, skipping insertion in model container [2023-11-26 12:00:31,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:31" (3/3) ... [2023-11-26 12:00:31,402 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness_negated.i [2023-11-26 12:00:31,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:31,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:31,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:31,504 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;@5fada88b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:31,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:00:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-26 12:00:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 12:00:31,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:31,535 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:31,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:31,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash -427222625, now seen corresponding path program 1 times [2023-11-26 12:00:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313999650] [2023-11-26 12:00:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313999650] [2023-11-26 12:00:32,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:00:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683536725] [2023-11-26 12:00:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:32,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:32,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:00:32,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-26 12:00:32,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683536725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474912247] [2023-11-26 12:00:32,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:00:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:33,041 INFO L87 Difference]: Start difference. First operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:33,223 INFO L93 Difference]: Finished difference Result 294 states and 407 transitions. [2023-11-26 12:00:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-26 12:00:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:33,239 INFO L225 Difference]: With dead ends: 294 [2023-11-26 12:00:33,240 INFO L226 Difference]: Without dead ends: 146 [2023-11-26 12:00:33,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:33,256 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-26 12:00:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-26 12:00:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 86 states have (on average 1.197674418604651) internal successors, (103), 87 states have internal predecessors, (103), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 12:00:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2023-11-26 12:00:33,339 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 126 [2023-11-26 12:00:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:33,341 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2023-11-26 12:00:33,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2023-11-26 12:00:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 12:00:33,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:33,378 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:33,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:00:33,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:33,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash 526993127, now seen corresponding path program 1 times [2023-11-26 12:00:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378658152] [2023-11-26 12:00:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:33,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746560718] [2023-11-26 12:00:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:33,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:33,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:34,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:34,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-26 12:00:34,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:34,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378658152] [2023-11-26 12:00:34,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746560718] [2023-11-26 12:00:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746560718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:34,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:34,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563270774] [2023-11-26 12:00:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:34,424 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:34,733 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2023-11-26 12:00:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:34,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-26 12:00:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:34,743 INFO L225 Difference]: With dead ends: 209 [2023-11-26 12:00:34,743 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 12:00:34,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:34,745 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:00:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 12:00:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 12:00:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 12:00:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 185 transitions. [2023-11-26 12:00:34,769 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 185 transitions. Word has length 126 [2023-11-26 12:00:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:34,772 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 185 transitions. [2023-11-26 12:00:34,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 185 transitions. [2023-11-26 12:00:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 12:00:34,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:34,781 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:34,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:35,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:35,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash -494075227, now seen corresponding path program 1 times [2023-11-26 12:00:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:35,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259150723] [2023-11-26 12:00:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257633952] [2023-11-26 12:00:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:35,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:35,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:35,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-26 12:00:35,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259150723] [2023-11-26 12:00:35,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257633952] [2023-11-26 12:00:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257633952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:35,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685554084] [2023-11-26 12:00:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:35,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:35,836 INFO L87 Difference]: Start difference. First operand 147 states and 185 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:36,339 INFO L93 Difference]: Finished difference Result 263 states and 331 transitions. [2023-11-26 12:00:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-26 12:00:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:36,343 INFO L225 Difference]: With dead ends: 263 [2023-11-26 12:00:36,344 INFO L226 Difference]: Without dead ends: 151 [2023-11-26 12:00:36,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:36,346 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:36,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 648 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:00:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-26 12:00:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-26 12:00:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 91 states have internal predecessors, (107), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-26 12:00:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2023-11-26 12:00:36,365 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 126 [2023-11-26 12:00:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2023-11-26 12:00:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 12:00:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2023-11-26 12:00:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-26 12:00:36,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:36,369 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:36,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:36,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:36,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1441355446, now seen corresponding path program 1 times [2023-11-26 12:00:36,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304088639] [2023-11-26 12:00:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:00:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:00:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:00:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:00:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:00:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 12:00:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 12:00:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 12:00:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 12:00:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 12:00:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 12:00:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 12:00:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 12:00:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 12:00:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 12:00:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:00:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 12:00:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 12:00:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-26 12:00:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304088639] [2023-11-26 12:00:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304088639] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097400551] [2023-11-26 12:00:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:39,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-26 12:00:39,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:40,002 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 15 treesize of output 1 [2023-11-26 12:00:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 12:00:40,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097400551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:40,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2023-11-26 12:00:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323869881] [2023-11-26 12:00:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-11-26 12:00:40,372 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-26 12:00:44,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 12:00:50,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 12:00:54,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 12:00:58,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 12:00:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:59,390 INFO L93 Difference]: Finished difference Result 271 states and 339 transitions. [2023-11-26 12:00:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 130 [2023-11-26 12:00:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:59,398 INFO L225 Difference]: With dead ends: 271 [2023-11-26 12:00:59,398 INFO L226 Difference]: Without dead ends: 171 [2023-11-26 12:00:59,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-11-26 12:00:59,402 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 132 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:59,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 772 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 438 Invalid, 4 Unknown, 0 Unchecked, 18.8s Time] [2023-11-26 12:00:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-26 12:00:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2023-11-26 12:00:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2023-11-26 12:00:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 207 transitions. [2023-11-26 12:00:59,455 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 207 transitions. Word has length 130 [2023-11-26 12:00:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:59,456 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 207 transitions. [2023-11-26 12:00:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-26 12:00:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 207 transitions. [2023-11-26 12:00:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-26 12:00:59,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:59,459 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:59,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:59,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:59,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1364454648, now seen corresponding path program 1 times [2023-11-26 12:00:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950427320] [2023-11-26 12:00:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:01:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:01:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 12:01:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 12:01:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 12:01:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 12:01:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 12:01:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 12:01:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 12:01:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 12:01:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 12:01:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 12:01:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:01:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 12:01:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 12:01:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-26 12:01:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950427320] [2023-11-26 12:01:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950427320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916972803] [2023-11-26 12:01:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:00,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:00,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:00,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:01:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:01,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:01,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 12:01:01,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:01,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916972803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:01,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:01,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-26 12:01:01,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824738179] [2023-11-26 12:01:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:01,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:01,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:01,629 INFO L87 Difference]: Start difference. First operand 168 states and 207 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-26 12:01:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:01,897 INFO L93 Difference]: Finished difference Result 276 states and 347 transitions. [2023-11-26 12:01:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 130 [2023-11-26 12:01:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:01,900 INFO L225 Difference]: With dead ends: 276 [2023-11-26 12:01:01,901 INFO L226 Difference]: Without dead ends: 172 [2023-11-26 12:01:01,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:01,902 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 13 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:01,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 612 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-26 12:01:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-26 12:01:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-26 12:01:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2023-11-26 12:01:01,942 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 130 [2023-11-26 12:01:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:01,943 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2023-11-26 12:01:01,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-26 12:01:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2023-11-26 12:01:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-26 12:01:01,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:01,948 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:01,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:02,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:02,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:02,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2071802191, now seen corresponding path program 1 times [2023-11-26 12:01:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822032820] [2023-11-26 12:01:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:01:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:01:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 12:01:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 12:01:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 12:01:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 12:01:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 12:01:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 12:01:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 12:01:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 12:01:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 12:01:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 12:01:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 12:01:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 12:01:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 12:01:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-26 12:01:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822032820] [2023-11-26 12:01:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822032820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986767199] [2023-11-26 12:01:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:03,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:03,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773697bc-eabb-4b4d-b2ca-b5ebb8e93127/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:01:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:04,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 12:01:04,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:08,510 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$#0.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$#0.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2023-11-26 12:01:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-26 12:01:16,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986767199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:16,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-26 12:01:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795280177] [2023-11-26 12:01:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=200, Unknown=3, NotChecked=28, Total=272 [2023-11-26 12:01:16,668 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23)