./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0ddb7abc850f8a391199f9601a013a826a50b23f35837ebae72d69a0568e75da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:14,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:15,091 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:00:15,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:15,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:15,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:15,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:15,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:15,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:15,131 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:15,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:15,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:15,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:15,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:15,135 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:15,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:15,136 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:00:15,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:15,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:15,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:00:15,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:15,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:00:15,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:15,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:15,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:15,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:15,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:15,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:15,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:15,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:15,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:15,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:00:15,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:15,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:00:15,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:15,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:15,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:00:15,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:15,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:15,162 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_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ddb7abc850f8a391199f9601a013a826a50b23f35837ebae72d69a0568e75da [2023-11-21 21:00:15,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:15,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:15,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:15,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:15,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:15,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i [2023-11-21 21:00:18,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:19,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:19,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i [2023-11-21 21:00:19,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/data/0e11d3566/80cfd85a066b4f8f91269b218e8946d2/FLAGc2c00ea32 [2023-11-21 21:00:19,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/data/0e11d3566/80cfd85a066b4f8f91269b218e8946d2 [2023-11-21 21:00:19,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:19,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:19,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:19,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:19,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:19,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:19" (1/1) ... [2023-11-21 21:00:19,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d1778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:19, skipping insertion in model container [2023-11-21 21:00:19,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:19" (1/1) ... [2023-11-21 21:00:19,736 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:20,104 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_795c6514-a6a3-47a5-a792-a90634a3dc4b/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4501,4514] [2023-11-21 21:00:20,115 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_795c6514-a6a3-47a5-a792-a90634a3dc4b/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4561,4574] [2023-11-21 21:00:21,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,548 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,571 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,575 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:21,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:22,274 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:00:22,275 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:00:22,277 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:00:22,279 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:00:22,282 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:00:22,283 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:00:22,284 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:00:22,285 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:00:22,286 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:00:22,287 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:00:23,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,196 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,232 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,233 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:23,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:23,344 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_795c6514-a6a3-47a5-a792-a90634a3dc4b/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4501,4514] [2023-11-21 21:00:23,344 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_795c6514-a6a3-47a5-a792-a90634a3dc4b/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4561,4574] [2023-11-21 21:00:23,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,404 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,407 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,455 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:00:23,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:00:23,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:00:23,459 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:00:23,460 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:00:23,461 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:00:23,462 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:00:23,463 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:00:23,464 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:00:23,464 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:00:23,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-21 21:00:23,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,696 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,733 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:00:23,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:24,187 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,188 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,188 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,188 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,188 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,188 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,189 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,189 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,189 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,189 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,189 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,190 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,190 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,190 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,190 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,190 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,191 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,191 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:24,201 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:24,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24 WrapperNode [2023-11-21 21:00:24,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:24,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:24,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:24,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:24,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,571 INFO L138 Inliner]: procedures = 772, calls = 2431, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 848 [2023-11-21 21:00:24,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:24,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:24,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:24,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:24,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,600 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,667 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-21 21:00:24,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:24,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:24,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:24,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:24,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (1/1) ... [2023-11-21 21:00:24,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:24,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:24,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 21:00:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 21:00:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 21:00:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:00:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 21:00:24,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 21:00:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 21:00:24,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 21:00:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-21 21:00:24,899 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-21 21:00:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:00:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:00:24,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:24,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:24,900 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 21:00:24,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 21:00:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:00:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 21:00:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 21:00:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:00:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 21:00:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 21:00:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:00:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-21 21:00:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-21 21:00:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-21 21:00:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-21 21:00:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:00:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-21 21:00:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-21 21:00:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-21 21:00:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-21 21:00:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 21:00:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-21 21:00:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-21 21:00:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:00:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:00:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-21 21:00:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-21 21:00:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:00:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 21:00:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 21:00:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 21:00:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 21:00:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 21:00:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 21:00:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-21 21:00:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-21 21:00:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:00:25,428 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:25,434 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:27,515 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-21 21:00:27,549 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:28,082 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:28,082 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 21:00:28,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:28 BoogieIcfgContainer [2023-11-21 21:00:28,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:28,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:28,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:28,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:28,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:19" (1/3) ... [2023-11-21 21:00:28,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d287e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:28, skipping insertion in model container [2023-11-21 21:00:28,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:24" (2/3) ... [2023-11-21 21:00:28,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d287e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:28, skipping insertion in model container [2023-11-21 21:00:28,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:28" (3/3) ... [2023-11-21 21:00:28,106 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness_negated.i [2023-11-21 21:00:28,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:28,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:00:28,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:28,251 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;@765ba84a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:28,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:00:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-21 21:00:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 21:00:28,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:28,279 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:28,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:28,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 893401512, now seen corresponding path program 1 times [2023-11-21 21:00:28,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:28,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418029262] [2023-11-21 21:00:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:00:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:00:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:00:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:00:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 21:00:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 21:00:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:00:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:00:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 21:00:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 21:00:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 21:00:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418029262] [2023-11-21 21:00:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418029262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:29,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:00:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838475417] [2023-11-21 21:00:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:29,689 INFO L87 Difference]: Start difference. First operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 21:00:31,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:33,315 INFO L93 Difference]: Finished difference Result 183 states and 227 transitions. [2023-11-21 21:00:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 48 [2023-11-21 21:00:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:33,333 INFO L225 Difference]: With dead ends: 183 [2023-11-21 21:00:33,334 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 21:00:33,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:33,342 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 34 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:33,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 363 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-21 21:00:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 21:00:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-11-21 21:00:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 77 states have internal predecessors, (88), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 21:00:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2023-11-21 21:00:33,419 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 48 [2023-11-21 21:00:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2023-11-21 21:00:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 21:00:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2023-11-21 21:00:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-21 21:00:33,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:33,428 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:33,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:00:33,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:33,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 373566981, now seen corresponding path program 1 times [2023-11-21 21:00:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686989104] [2023-11-21 21:00:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:33,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:33,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111843166] [2023-11-21 21:00:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:33,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:33,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:33,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:00:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:34,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 21:00:34,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 21:00:34,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:34,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:34,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686989104] [2023-11-21 21:00:34,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111843166] [2023-11-21 21:00:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111843166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:00:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464799984] [2023-11-21 21:00:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:34,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:34,680 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 21:00:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:36,122 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2023-11-21 21:00:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2023-11-21 21:00:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:36,127 INFO L225 Difference]: With dead ends: 175 [2023-11-21 21:00:36,127 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 21:00:36,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:36,130 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 21:00:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 21:00:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-21 21:00:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.144736842105263) internal successors, (87), 77 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 21:00:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2023-11-21 21:00:36,157 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 68 [2023-11-21 21:00:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2023-11-21 21:00:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 21:00:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2023-11-21 21:00:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-21 21:00:36,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:36,164 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:36,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 21:00:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:36,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:36,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1776968270, now seen corresponding path program 1 times [2023-11-21 21:00:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011443964] [2023-11-21 21:00:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:36,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023460749] [2023-11-21 21:00:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:36,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:36,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:36,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:36,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:00:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:37,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:37,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-21 21:00:37,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011443964] [2023-11-21 21:00:37,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023460749] [2023-11-21 21:00:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023460749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:37,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:37,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756010927] [2023-11-21 21:00:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:37,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:37,756 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 21:00:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:39,193 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2023-11-21 21:00:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 94 [2023-11-21 21:00:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:39,196 INFO L225 Difference]: With dead ends: 224 [2023-11-21 21:00:39,197 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 21:00:39,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:39,200 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:39,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 21:00:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 21:00:39,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-21 21:00:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 21:00:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2023-11-21 21:00:39,224 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 94 [2023-11-21 21:00:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:39,225 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2023-11-21 21:00:39,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 21:00:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2023-11-21 21:00:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 21:00:39,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:39,229 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 21:00:39,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:39,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:39,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:39,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash 670315976, now seen corresponding path program 1 times [2023-11-21 21:00:39,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:39,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493087698] [2023-11-21 21:00:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:39,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688473882] [2023-11-21 21:00:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:39,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:39,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:39,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:00:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:40,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 21:00:40,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:40,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 21:00:40,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 21:00:42,604 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|)))))) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|) 0))) (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|)))) is different from true [2023-11-21 21:00:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-21 21:00:43,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 21:00:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493087698] [2023-11-21 21:00:45,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688473882] [2023-11-21 21:00:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688473882] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:45,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:45,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-21 21:00:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314296495] [2023-11-21 21:00:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:00:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:00:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=143, Unknown=2, NotChecked=24, Total=210 [2023-11-21 21:00:45,945 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:00:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:49,854 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2023-11-21 21:00:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:00:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 103 [2023-11-21 21:00:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:49,857 INFO L225 Difference]: With dead ends: 172 [2023-11-21 21:00:49,858 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 21:00:49,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=69, Invalid=274, Unknown=3, NotChecked=34, Total=380 [2023-11-21 21:00:49,859 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 151 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:49,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 564 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 21:00:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 21:00:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-21 21:00:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.12987012987013) internal successors, (87), 79 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-21 21:00:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2023-11-21 21:00:49,885 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 103 [2023-11-21 21:00:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:49,886 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2023-11-21 21:00:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:00:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2023-11-21 21:00:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-21 21:00:49,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:49,888 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 21:00:49,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:50,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:50,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1969411911, now seen corresponding path program 1 times [2023-11-21 21:00:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843723273] [2023-11-21 21:00:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:50,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:50,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745489139] [2023-11-21 21:00:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:50,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:50,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:50,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:00:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:51,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 21:00:51,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-21 21:00:51,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 21:00:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843723273] [2023-11-21 21:00:51,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745489139] [2023-11-21 21:00:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745489139] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:51,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:51,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2023-11-21 21:00:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738844997] [2023-11-21 21:00:51,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:51,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:00:51,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:00:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-21 21:00:51,488 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-21 21:00:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:53,986 INFO L93 Difference]: Finished difference Result 148 states and 177 transitions. [2023-11-21 21:00:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 21:00:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) Word has length 109 [2023-11-21 21:00:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:53,989 INFO L225 Difference]: With dead ends: 148 [2023-11-21 21:00:53,989 INFO L226 Difference]: Without dead ends: 146 [2023-11-21 21:00:53,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:00:53,991 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:53,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1078 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 21:00:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-21 21:00:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2023-11-21 21:00:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 86 states have internal predecessors, (93), 39 states have call successors, (39), 19 states have call predecessors, (39), 22 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-21 21:00:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2023-11-21 21:00:54,012 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 109 [2023-11-21 21:00:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:54,013 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2023-11-21 21:00:54,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-21 21:00:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2023-11-21 21:00:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-21 21:00:54,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:54,016 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1] [2023-11-21 21:00:54,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:54,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:54,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:54,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1772725073, now seen corresponding path program 1 times [2023-11-21 21:00:54,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:54,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854658205] [2023-11-21 21:00:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:54,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:54,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268778963] [2023-11-21 21:00:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:54,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:54,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:54,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:54,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:00:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:55,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 21:00:55,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 21:00:55,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854658205] [2023-11-21 21:00:55,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268778963] [2023-11-21 21:00:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268778963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:00:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779043139] [2023-11-21 21:00:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:55,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:00:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:55,375 INFO L87 Difference]: Start difference. First operand 145 states and 174 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-21 21:00:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:57,814 INFO L93 Difference]: Finished difference Result 200 states and 234 transitions. [2023-11-21 21:00:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 113 [2023-11-21 21:00:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:57,817 INFO L225 Difference]: With dead ends: 200 [2023-11-21 21:00:57,818 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 21:00:57,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:57,820 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:57,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 687 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 21:00:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 21:00:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-21 21:00:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 83 states have (on average 1.108433734939759) internal successors, (92), 86 states have internal predecessors, (92), 39 states have call successors, (39), 19 states have call predecessors, (39), 22 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-21 21:00:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2023-11-21 21:00:57,839 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 113 [2023-11-21 21:00:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2023-11-21 21:00:57,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-21 21:00:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2023-11-21 21:00:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-21 21:00:57,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:57,842 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:57,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 21:00:58,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:58,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1521195071, now seen corresponding path program 1 times [2023-11-21 21:00:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168557774] [2023-11-21 21:00:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:58,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:58,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803307269] [2023-11-21 21:00:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:58,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:00:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:59,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-21 21:00:59,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 21:00:59,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168557774] [2023-11-21 21:00:59,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803307269] [2023-11-21 21:00:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803307269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:00:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219918209] [2023-11-21 21:00:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:00:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:00:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:00:59,322 INFO L87 Difference]: Start difference. First operand 145 states and 173 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-21 21:01:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:01,732 INFO L93 Difference]: Finished difference Result 211 states and 245 transitions. [2023-11-21 21:01:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:01:01,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 124 [2023-11-21 21:01:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:01,737 INFO L225 Difference]: With dead ends: 211 [2023-11-21 21:01:01,737 INFO L226 Difference]: Without dead ends: 143 [2023-11-21 21:01:01,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:01:01,739 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 5 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:01,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1203 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 21:01:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-21 21:01:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-21 21:01:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 85 states have internal predecessors, (89), 38 states have call successors, (38), 19 states have call predecessors, (38), 22 states have return successors, (41), 38 states have call predecessors, (41), 37 states have call successors, (41) [2023-11-21 21:01:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2023-11-21 21:01:01,781 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 124 [2023-11-21 21:01:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:01,783 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2023-11-21 21:01:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-21 21:01:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2023-11-21 21:01:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-21 21:01:01,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:01,791 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:01,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 21:01:02,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:02,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1175438998, now seen corresponding path program 1 times [2023-11-21 21:01:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:02,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902911203] [2023-11-21 21:01:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:02,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:01:02,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490108294] [2023-11-21 21:01:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:02,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:02,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:01:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:03,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 21:01:03,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-21 21:01:03,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902911203] [2023-11-21 21:01:03,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:01:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490108294] [2023-11-21 21:01:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490108294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:03,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171052813] [2023-11-21 21:01:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:03,377 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-21 21:01:05,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:01:07,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:01:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:08,007 INFO L93 Difference]: Finished difference Result 267 states and 306 transitions. [2023-11-21 21:01:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 141 [2023-11-21 21:01:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:08,009 INFO L225 Difference]: With dead ends: 267 [2023-11-21 21:01:08,009 INFO L226 Difference]: Without dead ends: 144 [2023-11-21 21:01:08,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:08,011 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 3 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:08,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 259 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-21 21:01:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-21 21:01:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2023-11-21 21:01:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 85 states have internal predecessors, (88), 38 states have call successors, (38), 19 states have call predecessors, (38), 22 states have return successors, (41), 38 states have call predecessors, (41), 37 states have call successors, (41) [2023-11-21 21:01:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2023-11-21 21:01:08,029 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 141 [2023-11-21 21:01:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:08,030 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2023-11-21 21:01:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-21 21:01:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2023-11-21 21:01:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-21 21:01:08,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:08,033 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:08,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 21:01:08,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:08,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -107513021, now seen corresponding path program 1 times [2023-11-21 21:01:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:08,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19158500] [2023-11-21 21:01:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:08,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:01:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797082040] [2023-11-21 21:01:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:08,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:08,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:08,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_795c6514-a6a3-47a5-a792-a90634a3dc4b/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process