./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-14 16:11:12,210 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 16:11:12,212 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 16:11:12,231 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 16:11:12,231 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 16:11:12,232 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 16:11:12,233 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 16:11:12,235 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 16:11:12,236 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 16:11:12,237 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 16:11:12,238 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 16:11:12,239 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 16:11:12,239 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 16:11:12,240 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 16:11:12,241 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 16:11:12,242 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 16:11:12,243 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 16:11:12,243 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 16:11:12,245 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 16:11:12,246 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 16:11:12,247 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 16:11:12,249 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 16:11:12,250 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 16:11:12,250 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 16:11:12,253 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 16:11:12,253 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 16:11:12,254 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 16:11:12,254 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 16:11:12,255 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 16:11:12,256 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 16:11:12,256 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 16:11:12,256 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 16:11:12,257 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 16:11:12,258 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 16:11:12,259 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 16:11:12,259 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 16:11:12,260 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 16:11:12,260 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 16:11:12,260 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 16:11:12,261 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 16:11:12,261 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 16:11:12,262 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 16:11:12,283 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 16:11:12,283 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 16:11:12,283 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 16:11:12,283 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 16:11:12,291 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 16:11:12,291 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 16:11:12,291 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 16:11:12,291 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 16:11:12,291 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 16:11:12,291 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 16:11:12,291 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 16:11:12,292 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 16:11:12,292 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 16:11:12,293 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 16:11:12,293 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 16:11:12,293 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 16:11:12,293 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 16:11:12,293 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 16:11:12,293 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 16:11:12,294 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 16:11:12,294 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 16:11:12,295 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 16:11:12,295 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/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_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh
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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c
[2022-12-14 16:11:12,470 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 16:11:12,487 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 16:11:12,489 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 16:11:12,490 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 16:11:12,491 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 16:11:12,492 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c
[2022-12-14 16:11:15,083 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 16:11:16,091 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 16:11:16,092 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/sv-benchmarks/c/eca-rers2012/Problem07_label51.c
[2022-12-14 16:11:16,285 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/data/6a75b3cb5/5f62728354704a50b1900b2d83523b2a/FLAGa4fdd8c79
[2022-12-14 16:11:16,296 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/data/6a75b3cb5/5f62728354704a50b1900b2d83523b2a
[2022-12-14 16:11:16,298 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 16:11:16,300 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 16:11:16,301 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 16:11:16,301 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 16:11:16,304 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 16:11:16,305 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:16" (1/1) ...
[2022-12-14 16:11:16,306 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e7f1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:16, skipping insertion in model container
[2022-12-14 16:11:16,306 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:16" (1/1) ...
[2022-12-14 16:11:16,312 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 16:11:16,902 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 16:11:26,689 WARN  L237   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_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283]
[2022-12-14 16:11:26,741 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 16:11:26,749 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 16:11:32,526 WARN  L237   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_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283]
[2022-12-14 16:11:32,530 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 16:11:33,151 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 16:11:33,151 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33 WrapperNode
[2022-12-14 16:11:33,151 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 16:11:33,152 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 16:11:33,152 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 16:11:33,152 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 16:11:33,157 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:33,488 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:34,751 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 16:11:34,752 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 16:11:34,752 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 16:11:34,753 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 16:11:34,753 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 16:11:34,761 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:34,761 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:34,958 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:34,958 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:35,557 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:35,682 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:35,800 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:35,867 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:36,196 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 16:11:36,197 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 16:11:36,197 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 16:11:36,197 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 16:11:36,198 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (1/1) ...
[2022-12-14 16:11:36,203 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 16:11:36,212 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 16:11:36,222 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 16:11:36,224 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6e557df-4c09-4ba5-8bfc-efe988a6f7e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 16:11:36,251 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 16:11:36,251 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 16:11:36,251 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 16:11:36,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 16:11:36,351 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 16:11:36,352 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 16:12:08,510 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 16:12:09,213 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 16:12:09,213 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 16:12:09,221 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:12:09 BoogieIcfgContainer
[2022-12-14 16:12:09,221 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 16:12:09,222 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 16:12:09,222 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 16:12:09,225 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 16:12:09,225 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:11:16" (1/3) ...
[2022-12-14 16:12:09,225 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556b9b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:12:09, skipping insertion in model container
[2022-12-14 16:12:09,225 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:33" (2/3) ...
[2022-12-14 16:12:09,226 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556b9b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:12:09, skipping insertion in model container
[2022-12-14 16:12:09,226 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:12:09" (3/3) ...
[2022-12-14 16:12:09,227 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label51.c
[2022-12-14 16:12:09,240 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 16:12:09,240 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 16:12:09,372 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 16:12:09,377 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71d60e33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 16:12:09,377 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 16:12:09,400 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:12:10,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 16:12:10,101 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:12:10,104 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:12:10,105 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:12:10,118 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:12:10,122 INFO  L85        PathProgramCache]: Analyzing trace with hash 184881401, now seen corresponding path program 1 times
[2022-12-14 16:12:10,129 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:12:10,129 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617210774]
[2022-12-14 16:12:10,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:12:10,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:12:12,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:12:38,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:12:38,558 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:12:38,558 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617210774]
[2022-12-14 16:12:38,559 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617210774] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:12:38,559 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:12:38,560 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:12:38,561 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983275343]
[2022-12-14 16:12:38,561 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:12:38,572 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:12:38,572 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:12:38,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:12:38,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:12:38,634 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:05,767 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:13:05,767 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 16:13:05,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:13:05,772 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085
[2022-12-14 16:13:05,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:13:05,841 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 16:13:05,841 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 16:13:05,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:13:05,854 INFO  L413           NwaCegarLoop]: 3615 mSDtfsCounter, 847 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32041 mSolverCounterSat, 10539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 42580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10539 IncrementalHoareTripleChecker+Valid, 32041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time
[2022-12-14 16:13:05,855 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 3665 Invalid, 42580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10539 Valid, 32041 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time]
[2022-12-14 16:13:05,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 16:13:06,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 16:13:06,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.8203040173724212) internal successors, (36883), 20262 states have internal predecessors, (36883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:06,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36883 transitions.
[2022-12-14 16:13:06,283 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36883 transitions. Word has length 10085
[2022-12-14 16:13:06,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:13:06,293 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36883 transitions.
[2022-12-14 16:13:06,296 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:06,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36883 transitions.
[2022-12-14 16:13:06,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 16:13:06,878 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:13:06,881 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:13:06,882 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 16:13:06,882 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:13:06,882 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:13:06,885 INFO  L85        PathProgramCache]: Analyzing trace with hash 987456161, now seen corresponding path program 1 times
[2022-12-14 16:13:06,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:13:06,886 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046071837]
[2022-12-14 16:13:06,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:13:06,887 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:13:08,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:13:27,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:13:27,929 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:13:27,929 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046071837]
[2022-12-14 16:13:27,930 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046071837] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:13:27,930 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:13:27,930 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:13:27,931 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037108820]
[2022-12-14 16:13:27,931 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:13:27,936 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:13:27,936 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:13:27,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:13:27,942 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:13:27,945 INFO  L87              Difference]: Start difference. First operand 20263 states and 36883 transitions. Second operand  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:56,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:13:56,645 INFO  L93              Difference]: Finished difference Result 60785 states and 110646 transitions.
[2022-12-14 16:13:56,646 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:13:56,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10089
[2022-12-14 16:13:56,649 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:13:56,732 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 16:13:56,733 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 16:13:56,753 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:13:56,754 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time
[2022-12-14 16:13:56,754 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4873 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time]
[2022-12-14 16:13:56,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 16:13:57,118 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 16:13:57,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.6266719312965796) internal successors, (65916), 40522 states have internal predecessors, (65916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:57,196 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65916 transitions.
[2022-12-14 16:13:57,196 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65916 transitions. Word has length 10089
[2022-12-14 16:13:57,197 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:13:57,197 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65916 transitions.
[2022-12-14 16:13:57,199 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:13:57,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65916 transitions.
[2022-12-14 16:13:57,796 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2022-12-14 16:13:57,796 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:13:57,798 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 16:13:57,799 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 16:13:57,799 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:13:57,799 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:13:57,801 INFO  L85        PathProgramCache]: Analyzing trace with hash 1936508007, now seen corresponding path program 1 times
[2022-12-14 16:13:57,801 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:13:57,801 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027145101]
[2022-12-14 16:13:57,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:13:57,802 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:13:58,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:14:17,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:14:17,654 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:14:17,654 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027145101]
[2022-12-14 16:14:17,654 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027145101] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:14:17,654 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:14:17,655 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:14:17,656 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297870561]
[2022-12-14 16:14:17,656 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:14:17,660 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:14:17,660 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:14:17,665 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:14:17,665 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:14:17,668 INFO  L87              Difference]: Start difference. First operand 40523 states and 65916 transitions. Second operand  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:14:47,915 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:14:47,915 INFO  L93              Difference]: Finished difference Result 121565 states and 197745 transitions.
[2022-12-14 16:14:47,916 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:14:47,917 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10090
[2022-12-14 16:14:47,917 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:14:47,983 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 16:14:47,984 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 16:14:48,007 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:14:48,008 INFO  L413           NwaCegarLoop]: 4820 mSDtfsCounter, 13626 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13626 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time
[2022-12-14 16:14:48,008 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13626 Valid, 4868 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time]
[2022-12-14 16:14:48,061 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 16:14:48,731 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 16:14:48,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.4809851681843982) internal successors, (120022), 81042 states have internal predecessors, (120022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:14:48,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 120022 transitions.
[2022-12-14 16:14:48,859 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 120022 transitions. Word has length 10090
[2022-12-14 16:14:48,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:14:48,860 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 120022 transitions.
[2022-12-14 16:14:48,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:14:48,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 120022 transitions.
[2022-12-14 16:14:49,544 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2022-12-14 16:14:49,545 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:14:49,547 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:14:49,547 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 16:14:49,548 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:14:49,548 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:14:49,550 INFO  L85        PathProgramCache]: Analyzing trace with hash 1097675594, now seen corresponding path program 1 times
[2022-12-14 16:14:49,550 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:14:49,550 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857235563]
[2022-12-14 16:14:49,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:14:49,551 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:14:50,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:15:08,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 16:15:08,753 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:15:08,753 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857235563]
[2022-12-14 16:15:08,753 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857235563] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:15:08,753 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:15:08,754 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:15:08,754 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056928327]
[2022-12-14 16:15:08,754 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:15:08,760 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:15:08,760 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:15:08,765 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:15:08,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:15:08,767 INFO  L87              Difference]: Start difference. First operand 81043 states and 120022 transitions. Second operand  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:15:40,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:15:40,343 INFO  L93              Difference]: Finished difference Result 243125 states and 360063 transitions.
[2022-12-14 16:15:40,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:15:40,345 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10096
[2022-12-14 16:15:40,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:15:40,483 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 16:15:40,484 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 16:15:40,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:15:40,513 INFO  L413           NwaCegarLoop]: 8614 mSDtfsCounter, 11010 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30889 mSolverCounterSat, 11008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11010 SdHoareTripleChecker+Valid, 8662 SdHoareTripleChecker+Invalid, 41897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11008 IncrementalHoareTripleChecker+Valid, 30889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time
[2022-12-14 16:15:40,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11010 Valid, 8662 Invalid, 41897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11008 Valid, 30889 Invalid, 0 Unknown, 0 Unchecked, 30.7s Time]
[2022-12-14 16:15:40,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 16:15:41,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 16:15:41,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3688996927481152) internal successors, (221874), 162082 states have internal predecessors, (221874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:15:41,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 221874 transitions.
[2022-12-14 16:15:41,934 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 221874 transitions. Word has length 10096
[2022-12-14 16:15:41,935 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:15:41,935 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 221874 transitions.
[2022-12-14 16:15:41,937 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:15:41,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 221874 transitions.
[2022-12-14 16:15:42,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10107
[2022-12-14 16:15:42,747 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:15:42,749 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:15:42,749 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 16:15:42,749 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:15:42,750 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:15:42,751 INFO  L85        PathProgramCache]: Analyzing trace with hash -10812865, now seen corresponding path program 1 times
[2022-12-14 16:15:42,751 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:15:42,752 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272973496]
[2022-12-14 16:15:42,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:15:42,752 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:15:44,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:16:07,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:16:07,798 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:16:07,798 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272973496]
[2022-12-14 16:16:07,798 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272973496] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:16:07,798 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:16:07,799 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:16:07,799 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140925141]
[2022-12-14 16:16:07,799 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:16:07,803 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:16:07,804 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:16:07,808 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:16:07,808 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:16:07,810 INFO  L87              Difference]: Start difference. First operand 162083 states and 221874 transitions. Second operand  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:16:34,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:16:34,561 INFO  L93              Difference]: Finished difference Result 405205 states and 545635 transitions.
[2022-12-14 16:16:34,562 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:16:34,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10106
[2022-12-14 16:16:34,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:16:34,792 INFO  L225             Difference]: With dead ends: 405205
[2022-12-14 16:16:34,792 INFO  L226             Difference]: Without dead ends: 243123
[2022-12-14 16:16:34,844 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:16:34,845 INFO  L413           NwaCegarLoop]: 9640 mSDtfsCounter, 10351 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29282 mSolverCounterSat, 7489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10351 SdHoareTripleChecker+Valid, 9688 SdHoareTripleChecker+Invalid, 36771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7489 IncrementalHoareTripleChecker+Valid, 29282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time
[2022-12-14 16:16:34,845 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10351 Valid, 9688 Invalid, 36771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7489 Valid, 29282 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time]
[2022-12-14 16:16:34,978 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243123 states.
[2022-12-14 16:16:36,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243123 to 243123.
[2022-12-14 16:16:36,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 243123 states, 243122 states have (on average 1.2878308009970303) internal successors, (313100), 243122 states have internal predecessors, (313100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:16:37,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 243123 states to 243123 states and 313100 transitions.
[2022-12-14 16:16:37,119 INFO  L78                 Accepts]: Start accepts. Automaton has 243123 states and 313100 transitions. Word has length 10106
[2022-12-14 16:16:37,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:16:37,120 INFO  L495      AbstractCegarLoop]: Abstraction has 243123 states and 313100 transitions.
[2022-12-14 16:16:37,121 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:16:37,122 INFO  L276                IsEmpty]: Start isEmpty. Operand 243123 states and 313100 transitions.
[2022-12-14 16:16:38,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2022-12-14 16:16:38,083 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:16:38,085 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 16:16:38,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 16:16:38,085 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:16:38,085 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:16:38,087 INFO  L85        PathProgramCache]: Analyzing trace with hash 186269719, now seen corresponding path program 1 times
[2022-12-14 16:16:38,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:16:38,087 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343183190]
[2022-12-14 16:16:38,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:16:38,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:16:39,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:16:58,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:16:58,907 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:16:58,907 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343183190]
[2022-12-14 16:16:58,907 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343183190] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:16:58,907 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:16:58,908 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:16:58,908 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326006960]
[2022-12-14 16:16:58,908 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:16:58,912 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:16:58,913 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:16:58,917 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:16:58,917 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:16:58,919 INFO  L87              Difference]: Start difference. First operand 243123 states and 313100 transitions. Second operand  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:17:30,963 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:17:30,963 INFO  L93              Difference]: Finished difference Result 729365 states and 939297 transitions.
[2022-12-14 16:17:30,963 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:17:30,964 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10122
[2022-12-14 16:17:30,964 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:17:31,453 INFO  L225             Difference]: With dead ends: 729365
[2022-12-14 16:17:31,453 INFO  L226             Difference]: Without dead ends: 486243
[2022-12-14 16:17:31,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:17:31,664 INFO  L413           NwaCegarLoop]: 5697 mSDtfsCounter, 13679 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27313 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13679 SdHoareTripleChecker+Valid, 5745 SdHoareTripleChecker+Invalid, 40343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 16:17:31,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13679 Valid, 5745 Invalid, 40343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27313 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 16:17:31,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 486243 states.
[2022-12-14 16:17:35,449 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 486243 to 486243.
[2022-12-14 16:17:35,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 486243 states, 486242 states have (on average 1.204540126110044) internal successors, (585698), 486242 states have internal predecessors, (585698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:17:36,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 486243 states to 486243 states and 585698 transitions.
[2022-12-14 16:17:36,470 INFO  L78                 Accepts]: Start accepts. Automaton has 486243 states and 585698 transitions. Word has length 10122
[2022-12-14 16:17:36,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:17:36,471 INFO  L495      AbstractCegarLoop]: Abstraction has 486243 states and 585698 transitions.
[2022-12-14 16:17:36,472 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:17:36,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 486243 states and 585698 transitions.
[2022-12-14 16:17:37,544 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10226
[2022-12-14 16:17:37,544 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:17:37,547 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:17:37,547 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 16:17:37,547 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:17:37,547 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:17:37,549 INFO  L85        PathProgramCache]: Analyzing trace with hash -1025212211, now seen corresponding path program 1 times
[2022-12-14 16:17:37,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:17:37,549 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436251478]
[2022-12-14 16:17:37,550 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:17:37,550 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:17:38,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:17:56,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 16:17:56,251 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:17:56,251 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436251478]
[2022-12-14 16:17:56,252 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436251478] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:17:56,252 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:17:56,253 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:17:56,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011912341]
[2022-12-14 16:17:56,253 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:17:56,257 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:17:56,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:17:56,261 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:17:56,262 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:17:56,264 INFO  L87              Difference]: Start difference. First operand 486243 states and 585698 transitions. Second operand  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:18:29,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:18:29,720 INFO  L93              Difference]: Finished difference Result 1458725 states and 1757091 transitions.
[2022-12-14 16:18:29,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:18:29,722 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10225
[2022-12-14 16:18:29,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:18:30,884 INFO  L225             Difference]: With dead ends: 1458725
[2022-12-14 16:18:30,884 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 16:18:31,080 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:18:31,081 INFO  L413           NwaCegarLoop]: 7700 mSDtfsCounter, 11540 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 31062 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11540 SdHoareTripleChecker+Valid, 7748 SdHoareTripleChecker+Invalid, 41563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time
[2022-12-14 16:18:31,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11540 Valid, 7748 Invalid, 41563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31062 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time]
[2022-12-14 16:18:31,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 16:18:38,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 16:18:39,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1554907957165275) internal successors, (1123694), 972482 states have internal predecessors, (1123694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:18:40,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1123694 transitions.
[2022-12-14 16:18:40,931 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1123694 transitions. Word has length 10225
[2022-12-14 16:18:40,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:18:40,933 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1123694 transitions.
[2022-12-14 16:18:40,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:18:40,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1123694 transitions.
[2022-12-14 16:18:42,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10531
[2022-12-14 16:18:42,916 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:18:42,918 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 16:18:42,918 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 16:18:42,918 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:18:42,919 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:18:42,920 INFO  L85        PathProgramCache]: Analyzing trace with hash 1177050794, now seen corresponding path program 1 times
[2022-12-14 16:18:42,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:18:42,920 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971408846]
[2022-12-14 16:18:42,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:18:42,921 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:18:44,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:19:04,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 667 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2022-12-14 16:19:04,424 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:19:04,424 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971408846]
[2022-12-14 16:19:04,424 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971408846] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:19:04,424 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:19:04,425 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:19:04,425 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912779290]
[2022-12-14 16:19:04,425 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:19:04,429 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:19:04,429 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:19:04,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:19:04,433 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:19:04,435 INFO  L87              Difference]: Start difference. First operand 972483 states and 1123694 transitions. Second operand  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:19:40,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:19:40,447 INFO  L93              Difference]: Finished difference Result 2431205 states and 2793717 transitions.
[2022-12-14 16:19:40,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:19:40,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10530
[2022-12-14 16:19:40,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:19:42,170 INFO  L225             Difference]: With dead ends: 2431205
[2022-12-14 16:19:42,171 INFO  L226             Difference]: Without dead ends: 1458723
[2022-12-14 16:19:42,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:19:42,686 INFO  L413           NwaCegarLoop]: 5128 mSDtfsCounter, 10868 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29997 mSolverCounterSat, 10732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10868 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 40729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10732 IncrementalHoareTripleChecker+Valid, 29997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 16:19:42,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10868 Valid, 5176 Invalid, 40729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10732 Valid, 29997 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 16:19:43,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1458723 states.
[2022-12-14 16:19:55,534 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458723 to 1458723.
[2022-12-14 16:19:56,017 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1458723 states, 1458722 states have (on average 1.1000286552201173) internal successors, (1604636), 1458722 states have internal predecessors, (1604636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:19:58,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1458723 states to 1458723 states and 1604636 transitions.
[2022-12-14 16:19:58,485 INFO  L78                 Accepts]: Start accepts. Automaton has 1458723 states and 1604636 transitions. Word has length 10530
[2022-12-14 16:19:58,486 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 16:19:58,486 INFO  L495      AbstractCegarLoop]: Abstraction has 1458723 states and 1604636 transitions.
[2022-12-14 16:19:58,488 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:19:58,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 1458723 states and 1604636 transitions.
[2022-12-14 16:20:00,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10532
[2022-12-14 16:20:00,882 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 16:20:00,884 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 16:20:00,884 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 16:20:00,884 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 16:20:00,884 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 16:20:00,885 INFO  L85        PathProgramCache]: Analyzing trace with hash -1788509675, now seen corresponding path program 1 times
[2022-12-14 16:20:00,886 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 16:20:00,886 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078644686]
[2022-12-14 16:20:00,886 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 16:20:00,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 16:20:02,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 16:20:26,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 464 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-12-14 16:20:26,246 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 16:20:26,246 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078644686]
[2022-12-14 16:20:26,246 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078644686] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 16:20:26,247 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 16:20:26,247 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 16:20:26,247 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873240589]
[2022-12-14 16:20:26,247 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 16:20:26,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 16:20:26,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 16:20:26,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 16:20:26,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:20:26,257 INFO  L87              Difference]: Start difference. First operand 1458723 states and 1604636 transitions. Second operand  has 3 states, 3 states have (on average 3503.6666666666665) internal successors, (10511), 2 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 16:21:00,624 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 16:21:00,624 INFO  L93              Difference]: Finished difference Result 2917445 states and 3209271 transitions.
[2022-12-14 16:21:00,625 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 16:21:00,626 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3503.6666666666665) internal successors, (10511), 2 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10531
[2022-12-14 16:21:00,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 16:21:02,497 INFO  L225             Difference]: With dead ends: 2917445
[2022-12-14 16:21:02,497 INFO  L226             Difference]: Without dead ends: 1458723
[2022-12-14 16:21:02,863 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 16:21:02,864 INFO  L413           NwaCegarLoop]: 9966 mSDtfsCounter, 9790 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30600 mSolverCounterSat, 3970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9790 SdHoareTripleChecker+Valid, 10014 SdHoareTripleChecker+Invalid, 34570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3970 IncrementalHoareTripleChecker+Valid, 30600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time
[2022-12-14 16:21:02,864 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9790 Valid, 10014 Invalid, 34570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3970 Valid, 30600 Invalid, 0 Unknown, 0 Unchecked, 27.5s Time]
[2022-12-14 16:21:04,190 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1458723 states.