./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version aef121e0
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --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 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-aef121e
[2021-11-23 02:51:15,113 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-23 02:51:15,116 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-23 02:51:15,156 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-23 02:51:15,157 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-23 02:51:15,158 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-23 02:51:15,160 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-23 02:51:15,163 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-23 02:51:15,165 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-23 02:51:15,167 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-23 02:51:15,168 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-23 02:51:15,169 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-23 02:51:15,170 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-23 02:51:15,171 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-23 02:51:15,173 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-23 02:51:15,175 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-23 02:51:15,176 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-23 02:51:15,178 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-23 02:51:15,180 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-23 02:51:15,184 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-23 02:51:15,186 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-23 02:51:15,188 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-23 02:51:15,197 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-23 02:51:15,198 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-23 02:51:15,206 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-23 02:51:15,207 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-23 02:51:15,207 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-23 02:51:15,209 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-23 02:51:15,209 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-23 02:51:15,210 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-23 02:51:15,211 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-23 02:51:15,212 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-23 02:51:15,213 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-23 02:51:15,214 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-23 02:51:15,222 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-23 02:51:15,222 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-23 02:51:15,223 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-23 02:51:15,223 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-23 02:51:15,224 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-23 02:51:15,225 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-23 02:51:15,226 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-23 02:51:15,232 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf
[2021-11-23 02:51:15,291 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-23 02:51:15,291 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-23 02:51:15,292 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-23 02:51:15,292 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-23 02:51:15,293 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-23 02:51:15,293 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-23 02:51:15,293 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2021-11-23 02:51:15,293 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2021-11-23 02:51:15,294 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2021-11-23 02:51:15,294 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2021-11-23 02:51:15,294 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2021-11-23 02:51:15,295 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2021-11-23 02:51:15,295 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2021-11-23 02:51:15,295 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2021-11-23 02:51:15,295 INFO  L138        SettingsManager]:  * Interval Domain=false
[2021-11-23 02:51:15,296 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2021-11-23 02:51:15,296 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2021-11-23 02:51:15,296 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2021-11-23 02:51:15,297 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-23 02:51:15,297 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-23 02:51:15,298 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-23 02:51:15,298 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-23 02:51:15,298 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-23 02:51:15,298 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-23 02:51:15,299 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-23 02:51:15,299 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-23 02:51:15,299 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-23 02:51:15,300 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-23 02:51:15,300 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-23 02:51:15,300 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 02:51:15,300 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-23 02:51:15,301 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-23 02:51:15,301 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-23 02:51:15,301 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2021-11-23 02:51:15,301 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-23 02:51:15,302 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-23 02:51:15,302 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-23 02:51:15,302 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-23 02:51:15,302 INFO  L138        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_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/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_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa
[2021-11-23 02:51:15,588 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-23 02:51:15,607 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-23 02:51:15,609 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-23 02:51:15,610 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-23 02:51:15,611 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-23 02:51:15,612 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i
[2021-11-23 02:51:15,679 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/data/fded826dd/6cce8001037f49948a29c435ab7d8822/FLAG50f127b11
[2021-11-23 02:51:16,540 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-23 02:51:16,540 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i
[2021-11-23 02:51:16,593 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/data/fded826dd/6cce8001037f49948a29c435ab7d8822/FLAG50f127b11
[2021-11-23 02:51:17,013 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/data/fded826dd/6cce8001037f49948a29c435ab7d8822
[2021-11-23 02:51:17,017 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-23 02:51:17,019 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-23 02:51:17,023 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-23 02:51:17,023 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-23 02:51:17,027 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-23 02:51:17,028 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:17" (1/1) ...
[2021-11-23 02:51:17,030 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c43210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:17, skipping insertion in model container
[2021-11-23 02:51:17,031 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:17" (1/1) ...
[2021-11-23 02:51:17,038 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-23 02:51:17,164 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-23 02:51:17,471 WARN  L230   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_5d4ab104-67ed-4e0a-a71e-492375d9975a/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512]
[2021-11-23 02:51:17,479 WARN  L230   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_5d4ab104-67ed-4e0a-a71e-492375d9975a/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572]
[2021-11-23 02:51:18,498 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,499 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,499 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,500 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,501 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,523 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,523 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,525 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,526 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:18,928 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_load_n
[2021-11-23 02:51:18,929 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_store_n
[2021-11-23 02:51:18,930 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2021-11-23 02:51:18,932 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2021-11-23 02:51:18,934 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2021-11-23 02:51:18,934 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2021-11-23 02:51:18,935 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2021-11-23 02:51:18,936 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2021-11-23 02:51:18,936 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2021-11-23 02:51:18,937 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2021-11-23 02:51:19,168 WARN  L610        FunctionHandler]: implicit declaration of function __builtin_va_copy
[2021-11-23 02:51:19,377 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,389 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,533 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 02:51:19,587 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-23 02:51:19,602 WARN  L230   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_5d4ab104-67ed-4e0a-a71e-492375d9975a/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512]
[2021-11-23 02:51:19,602 WARN  L230   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_5d4ab104-67ed-4e0a-a71e-492375d9975a/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572]
[2021-11-23 02:51:19,657 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,658 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,658 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,659 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,660 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,666 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,667 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,668 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,668 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,704 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_load_n
[2021-11-23 02:51:19,705 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_store_n
[2021-11-23 02:51:19,706 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2021-11-23 02:51:19,706 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2021-11-23 02:51:19,708 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2021-11-23 02:51:19,741 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2021-11-23 02:51:19,741 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2021-11-23 02:51:19,742 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2021-11-23 02:51:19,742 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2021-11-23 02:51:19,743 WARN  L610        FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2021-11-23 02:51:19,782 WARN  L610        FunctionHandler]: implicit declaration of function __builtin_va_copy
[2021-11-23 02:51:19,893 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,894 WARN  L1533              CHandler]: Possible shadowing of function index
[2021-11-23 02:51:19,932 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 02:51:20,260 INFO  L208         MainTranslator]: Completed translation
[2021-11-23 02:51:20,260 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20 WrapperNode
[2021-11-23 02:51:20,260 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-23 02:51:20,262 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-23 02:51:20,262 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-23 02:51:20,262 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-23 02:51:20,270 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,436 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,558 INFO  L137                Inliner]: procedures = 690, calls = 2737, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 793
[2021-11-23 02:51:20,563 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-23 02:51:20,563 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-23 02:51:20,564 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-23 02:51:20,564 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-23 02:51:20,573 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,574 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,585 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,588 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,642 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,647 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,657 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,671 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-23 02:51:20,672 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-23 02:51:20,672 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-23 02:51:20,672 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-23 02:51:20,673 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ...
[2021-11-23 02:51:20,682 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 02:51:20,697 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3
[2021-11-23 02:51:20,710 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-23 02:51:20,744 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-23 02:51:20,759 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_string_is_valid
[2021-11-23 02:51:20,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_string_is_valid
[2021-11-23 02:51:20,760 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-23 02:51:20,760 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_bool
[2021-11-23 02:51:20,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_bool
[2021-11-23 02:51:20,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~real
[2021-11-23 02:51:20,760 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid
[2021-11-23 02:51:20,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid
[2021-11-23 02:51:20,761 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~int
[2021-11-23 02:51:20,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2021-11-23 02:51:20,761 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-11-23 02:51:20,761 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy
[2021-11-23 02:51:20,761 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy
[2021-11-23 02:51:20,762 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_raise_error
[2021-11-23 02:51:20,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_raise_error
[2021-11-23 02:51:20,762 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-23 02:51:20,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-23 02:51:20,762 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-23 02:51:20,762 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-23 02:51:20,763 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-11-23 02:51:20,763 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-23 02:51:20,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-23 02:51:20,763 INFO  L130     BoogieDeclarations]: Found specification of procedure bounded_malloc
[2021-11-23 02:51:20,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure bounded_malloc
[2021-11-23 02:51:20,763 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_size_t
[2021-11-23 02:51:20,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_size_t
[2021-11-23 02:51:20,764 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2021-11-23 02:51:20,764 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2021-11-23 02:51:20,764 INFO  L130     BoogieDeclarations]: Found specification of procedure can_fail_malloc
[2021-11-23 02:51:20,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure can_fail_malloc
[2021-11-23 02:51:20,764 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-23 02:51:20,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-23 02:51:20,765 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_mem_acquire
[2021-11-23 02:51:20,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_mem_acquire
[2021-11-23 02:51:20,765 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-23 02:51:20,765 INFO  L130     BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus
[2021-11-23 02:51:20,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus
[2021-11-23 02:51:20,765 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2021-11-23 02:51:20,766 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_string_new_from_array
[2021-11-23 02:51:20,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array
[2021-11-23 02:51:20,766 INFO  L130     BoogieDeclarations]: Found specification of procedure can_fail_allocator
[2021-11-23 02:51:20,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure can_fail_allocator
[2021-11-23 02:51:20,766 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_add_size_checked
[2021-11-23 02:51:20,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_add_size_checked
[2021-11-23 02:51:20,767 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_uint64_t
[2021-11-23 02:51:20,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_uint64_t
[2021-11-23 02:51:20,767 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-11-23 02:51:20,767 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~real
[2021-11-23 02:51:20,767 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-23 02:51:21,011 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-23 02:51:21,014 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-23 02:51:21,228 INFO  L768   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true;
[2021-11-23 02:51:22,494 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-23 02:51:22,614 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-23 02:51:22,615 INFO  L301             CfgBuilder]: Removed 2 assume(true) statements.
[2021-11-23 02:51:22,618 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:22 BoogieIcfgContainer
[2021-11-23 02:51:22,618 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-23 02:51:22,620 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-23 02:51:22,621 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-23 02:51:22,624 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-23 02:51:22,625 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:17" (1/3) ...
[2021-11-23 02:51:22,626 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45376f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:22, skipping insertion in model container
[2021-11-23 02:51:22,626 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (2/3) ...
[2021-11-23 02:51:22,626 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45376f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:22, skipping insertion in model container
[2021-11-23 02:51:22,627 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:22" (3/3) ...
[2021-11-23 02:51:22,629 INFO  L111   eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i
[2021-11-23 02:51:22,638 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-23 02:51:22,639 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-23 02:51:22,707 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-23 02:51:22,723 INFO  L339      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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-23 02:51:22,727 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-23 02:51:22,750 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2021-11-23 02:51:22,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-11-23 02:51:22,758 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 02:51:22,759 INFO  L514         BasicCegarLoop]: trace histogram [5, 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]
[2021-11-23 02:51:22,766 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 02:51:22,772 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 02:51:22,772 INFO  L85        PathProgramCache]: Analyzing trace with hash 1018121587, now seen corresponding path program 1 times
[2021-11-23 02:51:22,781 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-11-23 02:51:22,782 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712838859]
[2021-11-23 02:51:22,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:22,785 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 02:51:23,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:23,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-23 02:51:23,525 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-11-23 02:51:23,526 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712838859]
[2021-11-23 02:51:23,527 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712838859] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 02:51:23,527 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 02:51:23,527 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-23 02:51:23,530 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342682092]
[2021-11-23 02:51:23,531 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 02:51:23,536 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-23 02:51:23,537 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-11-23 02:51:23,574 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-23 02:51:23,575 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-23 02:51:23,577 INFO  L87              Difference]: Start difference. First operand  has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand  has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12)
[2021-11-23 02:51:23,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 02:51:23,782 INFO  L93              Difference]: Finished difference Result 148 states and 188 transitions.
[2021-11-23 02:51:23,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-23 02:51:23,785 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 54
[2021-11-23 02:51:23,786 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 02:51:23,795 INFO  L225             Difference]: With dead ends: 148
[2021-11-23 02:51:23,795 INFO  L226             Difference]: Without dead ends: 110
[2021-11-23 02:51:23,799 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-23 02:51:23,803 INFO  L933         BasicCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-23 02:51:23,804 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 460 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-23 02:51:23,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2021-11-23 02:51:23,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2021-11-23 02:51:23,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33)
[2021-11-23 02:51:23,855 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions.
[2021-11-23 02:51:23,856 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 54
[2021-11-23 02:51:23,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 02:51:23,858 INFO  L470      AbstractCegarLoop]: Abstraction has 110 states and 134 transitions.
[2021-11-23 02:51:23,859 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12)
[2021-11-23 02:51:23,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions.
[2021-11-23 02:51:23,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2021-11-23 02:51:23,862 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 02:51:23,862 INFO  L514         BasicCegarLoop]: trace histogram [5, 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]
[2021-11-23 02:51:23,863 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-23 02:51:23,863 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 02:51:23,864 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 02:51:23,864 INFO  L85        PathProgramCache]: Analyzing trace with hash 1414451221, now seen corresponding path program 1 times
[2021-11-23 02:51:23,864 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-11-23 02:51:23,865 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820060630]
[2021-11-23 02:51:23,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:23,865 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 02:51:23,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:24,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-23 02:51:24,105 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-11-23 02:51:24,105 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820060630]
[2021-11-23 02:51:24,105 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820060630] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 02:51:24,105 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 02:51:24,106 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-23 02:51:24,106 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016089340]
[2021-11-23 02:51:24,106 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 02:51:24,107 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-23 02:51:24,108 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-11-23 02:51:24,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-23 02:51:24,109 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-23 02:51:24,109 INFO  L87              Difference]: Start difference. First operand 110 states and 134 transitions. Second operand  has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2021-11-23 02:51:24,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 02:51:24,276 INFO  L93              Difference]: Finished difference Result 141 states and 169 transitions.
[2021-11-23 02:51:24,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-23 02:51:24,277 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 58
[2021-11-23 02:51:24,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 02:51:24,280 INFO  L225             Difference]: With dead ends: 141
[2021-11-23 02:51:24,280 INFO  L226             Difference]: Without dead ends: 110
[2021-11-23 02:51:24,281 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-23 02:51:24,283 INFO  L933         BasicCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-23 02:51:24,284 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-23 02:51:24,285 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2021-11-23 02:51:24,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106.
[2021-11-23 02:51:24,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 106 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2021-11-23 02:51:24,300 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions.
[2021-11-23 02:51:24,300 INFO  L78                 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 58
[2021-11-23 02:51:24,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 02:51:24,301 INFO  L470      AbstractCegarLoop]: Abstraction has 106 states and 128 transitions.
[2021-11-23 02:51:24,302 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2021-11-23 02:51:24,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions.
[2021-11-23 02:51:24,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2021-11-23 02:51:24,306 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 02:51:24,306 INFO  L514         BasicCegarLoop]: trace histogram [7, 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]
[2021-11-23 02:51:24,306 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-23 02:51:24,307 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 02:51:24,307 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 02:51:24,308 INFO  L85        PathProgramCache]: Analyzing trace with hash -1146342054, now seen corresponding path program 1 times
[2021-11-23 02:51:24,308 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-11-23 02:51:24,308 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924704772]
[2021-11-23 02:51:24,308 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:24,309 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 02:51:24,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:24,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2021-11-23 02:51:24,579 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-11-23 02:51:24,579 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924704772]
[2021-11-23 02:51:24,579 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924704772] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 02:51:24,579 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 02:51:24,580 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-23 02:51:24,580 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988241052]
[2021-11-23 02:51:24,580 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 02:51:24,581 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-23 02:51:24,581 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-11-23 02:51:24,582 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-23 02:51:24,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-23 02:51:24,582 INFO  L87              Difference]: Start difference. First operand 106 states and 128 transitions. Second operand  has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20)
[2021-11-23 02:51:24,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 02:51:24,722 INFO  L93              Difference]: Finished difference Result 156 states and 187 transitions.
[2021-11-23 02:51:24,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-11-23 02:51:24,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 89
[2021-11-23 02:51:24,724 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 02:51:24,727 INFO  L225             Difference]: With dead ends: 156
[2021-11-23 02:51:24,727 INFO  L226             Difference]: Without dead ends: 112
[2021-11-23 02:51:24,728 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-23 02:51:24,730 INFO  L933         BasicCegarLoop]: 111 mSDtfsCounter, 3 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-23 02:51:24,730 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 550 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-23 02:51:24,732 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2021-11-23 02:51:24,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110.
[2021-11-23 02:51:24,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33)
[2021-11-23 02:51:24,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions.
[2021-11-23 02:51:24,745 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 89
[2021-11-23 02:51:24,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 02:51:24,745 INFO  L470      AbstractCegarLoop]: Abstraction has 110 states and 132 transitions.
[2021-11-23 02:51:24,746 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20)
[2021-11-23 02:51:24,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions.
[2021-11-23 02:51:24,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2021-11-23 02:51:24,749 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 02:51:24,749 INFO  L514         BasicCegarLoop]: trace histogram [7, 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]
[2021-11-23 02:51:24,750 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-23 02:51:24,750 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 02:51:24,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 02:51:24,751 INFO  L85        PathProgramCache]: Analyzing trace with hash 879882711, now seen corresponding path program 1 times
[2021-11-23 02:51:24,751 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-11-23 02:51:24,751 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299207946]
[2021-11-23 02:51:24,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:24,752 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 02:51:24,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:25,086 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2021-11-23 02:51:25,087 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-11-23 02:51:25,087 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299207946]
[2021-11-23 02:51:25,087 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299207946] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 02:51:25,087 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 02:51:25,087 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2021-11-23 02:51:25,088 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814715481]
[2021-11-23 02:51:25,088 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 02:51:25,090 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-23 02:51:25,090 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-11-23 02:51:25,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-23 02:51:25,091 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2021-11-23 02:51:25,091 INFO  L87              Difference]: Start difference. First operand 110 states and 132 transitions. Second operand  has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21)
[2021-11-23 02:51:25,311 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 02:51:25,312 INFO  L93              Difference]: Finished difference Result 154 states and 184 transitions.
[2021-11-23 02:51:25,312 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-11-23 02:51:25,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 93
[2021-11-23 02:51:25,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 02:51:25,318 INFO  L225             Difference]: With dead ends: 154
[2021-11-23 02:51:25,318 INFO  L226             Difference]: Without dead ends: 104
[2021-11-23 02:51:25,320 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2021-11-23 02:51:25,322 INFO  L933         BasicCegarLoop]: 110 mSDtfsCounter, 1 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-11-23 02:51:25,324 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2021-11-23 02:51:25,326 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2021-11-23 02:51:25,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2021-11-23 02:51:25,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 56 states have internal predecessors, (60), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2021-11-23 02:51:25,347 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions.
[2021-11-23 02:51:25,348 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 93
[2021-11-23 02:51:25,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 02:51:25,349 INFO  L470      AbstractCegarLoop]: Abstraction has 104 states and 123 transitions.
[2021-11-23 02:51:25,350 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21)
[2021-11-23 02:51:25,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions.
[2021-11-23 02:51:25,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2021-11-23 02:51:25,357 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 02:51:25,358 INFO  L514         BasicCegarLoop]: trace histogram [8, 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]
[2021-11-23 02:51:25,358 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-23 02:51:25,358 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 02:51:25,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 02:51:25,361 INFO  L85        PathProgramCache]: Analyzing trace with hash -2047562133, now seen corresponding path program 1 times
[2021-11-23 02:51:25,361 INFO  L121   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-11-23 02:51:25,362 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092933126]
[2021-11-23 02:51:25,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:25,364 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 02:51:25,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:26,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2021-11-23 02:51:26,388 INFO  L139   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2021-11-23 02:51:26,388 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092933126]
[2021-11-23 02:51:26,388 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092933126] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-23 02:51:26,388 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595566825]
[2021-11-23 02:51:26,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 02:51:26,389 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 02:51:26,389 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3
[2021-11-23 02:51:26,394 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-23 02:51:26,417 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4ab104-67ed-4e0a-a71e-492375d9975a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-23 02:51:26,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 02:51:26,974 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 104 conjunts are in the unsatisfiable core
[2021-11-23 02:51:26,998 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-23 02:51:35,842 INFO  L388             Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9
[2021-11-23 02:51:36,172 INFO  L354             Elim1Store]: treesize reduction 44, result has 30.2 percent of original size
[2021-11-23 02:51:36,173 INFO  L388             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 85
[2021-11-23 02:51:36,247 INFO  L354             Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-11-23 02:51:36,247 INFO  L388             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 44
[2021-11-23 02:51:40,028 WARN  L322   ript$VariableManager]: TermVariabe |aux_mod_ULTIMATE.start_aws_string_new_from_array_harness_~alloc_size~2#1_125| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 02:51:40,176 INFO  L354             Elim1Store]: treesize reduction 93, result has 7.9 percent of original size
[2021-11-23 02:51:40,176 INFO  L388             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 135
[2021-11-23 02:51:40,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2021-11-23 02:51:40,465 INFO  L328         TraceCheckSpWp]: Computing backward predicates...