./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 30e01a73
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 153b65773966546d8fd416fac373e8e3e127696e78fd1e5e636cc0e37a9471f2
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 20:37:16,492 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-23 20:37:16,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf
[2023-11-23 20:37:16,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 20:37:16,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 20:37:16,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 20:37:16,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 20:37:16,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 20:37:16,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 20:37:16,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 20:37:16,729 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-11-23 20:37:16,729 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 20:37:16,730 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-11-23 20:37:16,732 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-23 20:37:16,733 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-11-23 20:37:16,733 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-11-23 20:37:16,734 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2023-11-23 20:37:16,735 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2023-11-23 20:37:16,735 INFO L153 SettingsManager]: * Interval Domain=false
[2023-11-23 20:37:16,736 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-23 20:37:16,736 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2023-11-23 20:37:16,737 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC
[2023-11-23 20:37:16,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 20:37:16,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-23 20:37:16,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-23 20:37:16,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-23 20:37:16,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-23 20:37:16,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 20:37:16,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-23 20:37:16,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-23 20:37:16,746 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-23 20:37:16,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 20:37:16,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 20:37:16,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-23 20:37:16,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 20:37:16,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 20:37:16,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 20:37:16,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-23 20:37:16,750 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2023-11-23 20:37:16,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 20:37:16,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 20:37:16,751 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-23 20:37:16,752 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-11-23 20:37:16,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 20:37:16,753 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
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_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b65773966546d8fd416fac373e8e3e127696e78fd1e5e636cc0e37a9471f2
[2023-11-23 20:37:17,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 20:37:17,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 20:37:17,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 20:37:17,117 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-23 20:37:17,117 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-23 20:37:17,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i
[2023-11-23 20:37:20,405 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-23 20:37:21,030 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-23 20:37:21,032 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i
[2023-11-23 20:37:21,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/data/7a6a773ca/fac84ac9ebe04687bc49358cc48a5099/FLAGa4d7336fa
[2023-11-23 20:37:21,098 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/data/7a6a773ca/fac84ac9ebe04687bc49358cc48a5099
[2023-11-23 20:37:21,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 20:37:21,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 20:37:21,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 20:37:21,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 20:37:21,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 20:37:21,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:21" (1/1) ...
[2023-11-23 20:37:21,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168237d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:21, skipping insertion in model container
[2023-11-23 20:37:21,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:21" (1/1) ...
[2023-11-23 20:37:21,265 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-23 20:37:21,645 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_d23eeced-2a9e-4b88-95b5-f4d910b81d95/sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i[4494,4507]
[2023-11-23 20:37:21,656 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_d23eeced-2a9e-4b88-95b5-f4d910b81d95/sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i[4554,4567]
[2023-11-23 20:37:23,001 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,003 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,004 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,005 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,006 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,053 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,054 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,056 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,062 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,074 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,078 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,078 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,079 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:23,687 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-23 20:37:23,702 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-23 20:37:23,704 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-23 20:37:23,705 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-23 20:37:23,707 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-23 20:37:23,711 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-23 20:37:23,712 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-23 20:37:23,713 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-23 20:37:23,714 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-23 20:37:23,715 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-23 20:37:24,396 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,397 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,433 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,435 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,444 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,445 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,475 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,477 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,478 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,478 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,479 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,479 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,480 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,546 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 20:37:24,609 INFO L202 MainTranslator]: Completed pre-run
[2023-11-23 20:37:24,636 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_d23eeced-2a9e-4b88-95b5-f4d910b81d95/sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i[4494,4507]
[2023-11-23 20:37:24,639 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/sv-benchmarks/c/aws-c-common/aws_hash_iter_delete_harness_negated.i[4554,4567]
[2023-11-23 20:37:24,714 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,715 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,717 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,717 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,718 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,731 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,731 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,733 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,733 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,735 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,736 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,737 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,737 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:24,783 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-23 20:37:24,784 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-23 20:37:24,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-23 20:37:24,786 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-23 20:37:24,787 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-23 20:37:24,789 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-23 20:37:24,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-23 20:37:24,791 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-23 20:37:24,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-23 20:37:24,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-23 20:37:24,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__(""
:
: "r"(pBuf)
: "memory"); [7526-7537]
[2023-11-23 20:37:25,051 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,052 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,063 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,064 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,068 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,069 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,086 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,087 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,087 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,089 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,089 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,090 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,090 WARN L1590 CHandler]: Possible shadowing of function index
[2023-11-23 20:37:25,126 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 20:37:25,454 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,454 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,455 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,456 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,457 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,457 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,457 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,457 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 20:37:25,465 INFO L206 MainTranslator]: Completed translation
[2023-11-23 20:37:25,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25 WrapperNode
[2023-11-23 20:37:25,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 20:37:25,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 20:37:25,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 20:37:25,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 20:37:25,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,743 INFO L138 Inliner]: procedures = 772, calls = 2461, calls flagged for inlining = 66, calls inlined = 11, statements flattened = 749
[2023-11-23 20:37:25,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 20:37:25,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 20:37:25,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 20:37:25,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 20:37:25,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 20:37:25,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 20:37:25,875 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 20:37:25,875 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-23 20:37:25,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (1/1) ...
[2023-11-23 20:37:25,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 20:37:25,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 20:37:25,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 20:37:25,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 20:37:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2023-11-23 20:37:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool
[2023-11-23 20:37:25,966 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool
[2023-11-23 20:37:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-23 20:37:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error
[2023-11-23 20:37:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error
[2023-11-23 20:37:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-23 20:37:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-23 20:37:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid
[2023-11-23 20:37:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid
[2023-11-23 20:37:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-23 20:37:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 20:37:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-23 20:37:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 20:37:25,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 20:37:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc
[2023-11-23 20:37:25,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc
[2023-11-23 20:37:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked
[2023-11-23 20:37:25,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked
[2023-11-23 20:37:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2023-11-23 20:37:25,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2023-11-23 20:37:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 20:37:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus
[2023-11-23 20:37:25,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus
[2023-11-23 20:37:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-23 20:37:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t
[2023-11-23 20:37:25,972 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t
[2023-11-23 20:37:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-23 20:37:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two
[2023-11-23 20:37:25,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two
[2023-11-23 20:37:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 20:37:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes
[2023-11-23 20:37:25,972 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes
[2023-11-23 20:37:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID
[2023-11-23 20:37:25,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID
[2023-11-23 20:37:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-23 20:37:25,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-23 20:37:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid
[2023-11-23 20:37:25,974 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid
[2023-11-23 20:37:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid
[2023-11-23 20:37:25,974 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid
[2023-11-23 20:37:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-11-23 20:37:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult
[2023-11-23 20:37:25,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult
[2023-11-23 20:37:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked
[2023-11-23 20:37:25,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked
[2023-11-23 20:37:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry
[2023-11-23 20:37:25,976 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry
[2023-11-23 20:37:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_delete
[2023-11-23 20:37:25,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_delete
[2023-11-23 20:37:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-23 20:37:26,417 INFO L241 CfgBuilder]: Building ICFG
[2023-11-23 20:37:26,420 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 20:37:26,615 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true;
[2023-11-23 20:37:26,615 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true;
[2023-11-23 20:37:27,550 INFO L282 CfgBuilder]: Performing block encoding
[2023-11-23 20:37:27,968 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 20:37:27,968 INFO L309 CfgBuilder]: Removed 7 assume(true) statements.
[2023-11-23 20:37:27,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:27 BoogieIcfgContainer
[2023-11-23 20:37:27,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 20:37:27,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 20:37:27,976 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 20:37:27,979 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-23 20:37:27,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:21" (1/3) ...
[2023-11-23 20:37:27,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1504860a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:27, skipping insertion in model container
[2023-11-23 20:37:27,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:25" (2/3) ...
[2023-11-23 20:37:27,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1504860a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:27, skipping insertion in model container
[2023-11-23 20:37:27,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:27" (3/3) ...
[2023-11-23 20:37:27,994 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_delete_harness_negated.i
[2023-11-23 20:37:28,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 20:37:28,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-23 20:37:28,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 20:37:28,112 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=FINITE_AUTOMATA, 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;@77be2960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 20:37:28,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-23 20:37:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 94 states have (on average 1.202127659574468) internal successors, (113), 93 states have internal predecessors, (113), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54)
[2023-11-23 20:37:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-11-23 20:37:28,144 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 20:37:28,148 INFO L195 NwaCegarLoop]: trace histogram [19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 20:37:28,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 20:37:28,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 20:37:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1902186937, now seen corresponding path program 1 times
[2023-11-23 20:37:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 20:37:28,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541027823]
[2023-11-23 20:37:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:37:28,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 20:37:28,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-23 20:37:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113604336]
[2023-11-23 20:37:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:37:28,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-23 20:37:28,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 20:37:28,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-23 20:37:28,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-23 20:37:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:37:29,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-23 20:37:29,589 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 20:37:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-11-23 20:37:29,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-23 20:37:29,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 20:37:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541027823]
[2023-11-23 20:37:29,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-23 20:37:29,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113604336]
[2023-11-23 20:37:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113604336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 20:37:29,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 20:37:29,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-23 20:37:29,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646761228]
[2023-11-23 20:37:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 20:37:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-23 20:37:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 20:37:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-23 20:37:29,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-23 20:37:29,743 INFO L87 Difference]: Start difference. First operand has 167 states, 94 states have (on average 1.202127659574468) internal successors, (113), 93 states have internal predecessors, (113), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32)
[2023-11-23 20:37:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 20:37:30,412 INFO L93 Difference]: Finished difference Result 304 states and 413 transitions.
[2023-11-23 20:37:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-23 20:37:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 146
[2023-11-23 20:37:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 20:37:30,431 INFO L225 Difference]: With dead ends: 304
[2023-11-23 20:37:30,431 INFO L226 Difference]: Without dead ends: 169
[2023-11-23 20:37:30,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-23 20:37:30,450 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-11-23 20:37:30,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 736 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-11-23 20:37:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2023-11-23 20:37:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169.
[2023-11-23 20:37:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 54 states have call successors, (54), 19 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 53 states have call successors, (54)
[2023-11-23 20:37:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 217 transitions.
[2023-11-23 20:37:30,540 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 217 transitions. Word has length 146
[2023-11-23 20:37:30,542 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 20:37:30,542 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 217 transitions.
[2023-11-23 20:37:30,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32)
[2023-11-23 20:37:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 217 transitions.
[2023-11-23 20:37:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2023-11-23 20:37:30,559 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 20:37:30,559 INFO L195 NwaCegarLoop]: trace histogram [19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 20:37:30,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-23 20:37:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-23 20:37:30,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 20:37:30,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 20:37:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1884336505, now seen corresponding path program 1 times
[2023-11-23 20:37:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 20:37:30,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498207201]
[2023-11-23 20:37:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:37:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 20:37:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:37:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-11-23 20:37:34,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 20:37:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498207201]
[2023-11-23 20:37:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498207201] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 20:37:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 20:37:34,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-23 20:37:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061711504]
[2023-11-23 20:37:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 20:37:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-23 20:37:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 20:37:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-23 20:37:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-11-23 20:37:34,074 INFO L87 Difference]: Start difference. First operand 169 states and 217 transitions. Second operand has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33)
[2023-11-23 20:37:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 20:37:34,982 INFO L93 Difference]: Finished difference Result 290 states and 376 transitions.
[2023-11-23 20:37:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-23 20:37:34,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 150
[2023-11-23 20:37:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 20:37:34,987 INFO L225 Difference]: With dead ends: 290
[2023-11-23 20:37:34,988 INFO L226 Difference]: Without dead ends: 171
[2023-11-23 20:37:34,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-11-23 20:37:34,990 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 6 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-11-23 20:37:34,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 822 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-11-23 20:37:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2023-11-23 20:37:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171.
[2023-11-23 20:37:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 97 states have internal predecessors, (110), 54 states have call successors, (54), 19 states have call predecessors, (54), 21 states have return successors, (55), 54 states have call predecessors, (55), 53 states have call successors, (55)
[2023-11-23 20:37:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions.
[2023-11-23 20:37:35,015 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 150
[2023-11-23 20:37:35,016 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 20:37:35,016 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions.
[2023-11-23 20:37:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33)
[2023-11-23 20:37:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions.
[2023-11-23 20:37:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-11-23 20:37:35,019 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 20:37:35,020 INFO L195 NwaCegarLoop]: trace histogram [19, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 20:37:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-23 20:37:35,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 20:37:35,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 20:37:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1265297240, now seen corresponding path program 1 times
[2023-11-23 20:37:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 20:37:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335660052]
[2023-11-23 20:37:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:37:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 20:37:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:37:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-11-23 20:37:37,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 20:37:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335660052]
[2023-11-23 20:37:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335660052] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-23 20:37:37,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510073647]
[2023-11-23 20:37:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:37:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-23 20:37:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 20:37:37,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-23 20:37:37,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-23 20:37:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:37:37,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 49 conjunts are in the unsatisfiable core
[2023-11-23 20:37:37,820 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 20:37:38,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-11-23 20:37:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2023-11-23 20:37:38,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-23 20:37:38,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510073647] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 20:37:38,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-23 20:37:38,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18
[2023-11-23 20:37:38,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913424587]
[2023-11-23 20:37:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 20:37:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-23 20:37:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 20:37:38,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-23 20:37:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306
[2023-11-23 20:37:38,434 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand has 12 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 5 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34)
[2023-11-23 20:37:42,614 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=true, quantifiers [0]
[2023-11-23 20:37:44,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:46,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:48,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:50,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:53,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:37:57,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:00,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:02,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:04,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:06,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:08,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-23 20:38:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 20:38:08,738 INFO L93 Difference]: Finished difference Result 339 states and 427 transitions.
[2023-11-23 20:38:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2023-11-23 20:38:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 5 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 156
[2023-11-23 20:38:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 20:38:08,742 INFO L225 Difference]: With dead ends: 339
[2023-11-23 20:38:08,742 INFO L226 Difference]: Without dead ends: 211
[2023-11-23 20:38:08,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600
[2023-11-23 20:38:08,745 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 63 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 20 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time
[2023-11-23 20:38:08,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1573 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 821 Invalid, 13 Unknown, 0 Unchecked, 30.0s Time]
[2023-11-23 20:38:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2023-11-23 20:38:08,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208.
[2023-11-23 20:38:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 62 states have call successors, (62), 27 states have call predecessors, (62), 29 states have return successors, (64), 62 states have call predecessors, (64), 61 states have call successors, (64)
[2023-11-23 20:38:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 258 transitions.
[2023-11-23 20:38:08,776 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 258 transitions. Word has length 156
[2023-11-23 20:38:08,776 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 20:38:08,777 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 258 transitions.
[2023-11-23 20:38:08,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 5 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34)
[2023-11-23 20:38:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 258 transitions.
[2023-11-23 20:38:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2023-11-23 20:38:08,780 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 20:38:08,780 INFO L195 NwaCegarLoop]: trace histogram [19, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 20:38:08,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-23 20:38:09,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-23 20:38:09,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-23 20:38:09,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 20:38:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2029443621, now seen corresponding path program 1 times
[2023-11-23 20:38:09,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 20:38:09,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887756915]
[2023-11-23 20:38:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:38:09,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 20:38:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:38:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-11-23 20:38:10,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 20:38:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887756915]
[2023-11-23 20:38:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887756915] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-23 20:38:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021884932]
[2023-11-23 20:38:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 20:38:10,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-23 20:38:10,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 20:38:10,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-23 20:38:10,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d23eeced-2a9e-4b88-95b5-f4d910b81d95/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-23 20:38:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 20:38:10,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 53 conjunts are in the unsatisfiable core
[2023-11-23 20:38:10,924 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 20:38:11,110 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
[2023-11-23 20:38:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-11-23 20:38:11,887 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-23 20:38:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-11-23 20:38:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021884932] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-23 20:38:12,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-23 20:38:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 18] total 23
[2023-11-23 20:38:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250520359]
[2023-11-23 20:38:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 20:38:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-23 20:38:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 20:38:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-23 20:38:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506
[2023-11-23 20:38:12,670 INFO L87 Difference]: Start difference. First operand 208 states and 258 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)