./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label56.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_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/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_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label56.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/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_478797a7-ddd1-4b57-b875-863d8c6afb03/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 15ed19eb5795bed80c0398d5ac36df37e483370c3431a4e2b1af686401d8c839
--- 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 05:01:19,192 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 05:01:19,194 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 05:01:19,212 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 05:01:19,212 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 05:01:19,213 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 05:01:19,214 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 05:01:19,216 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 05:01:19,217 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 05:01:19,218 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 05:01:19,219 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 05:01:19,220 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 05:01:19,220 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 05:01:19,221 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 05:01:19,222 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 05:01:19,223 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 05:01:19,224 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 05:01:19,225 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 05:01:19,226 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 05:01:19,227 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 05:01:19,228 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 05:01:19,229 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 05:01:19,229 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 05:01:19,230 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 05:01:19,232 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 05:01:19,232 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 05:01:19,232 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 05:01:19,233 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 05:01:19,233 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 05:01:19,234 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 05:01:19,234 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 05:01:19,235 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 05:01:19,235 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 05:01:19,236 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 05:01:19,237 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 05:01:19,237 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 05:01:19,237 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 05:01:19,237 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 05:01:19,238 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 05:01:19,238 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 05:01:19,239 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 05:01:19,239 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 05:01:19,253 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 05:01:19,253 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 05:01:19,254 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 05:01:19,254 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 05:01:19,254 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 05:01:19,254 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 05:01:19,254 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 05:01:19,255 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 05:01:19,255 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 05:01:19,255 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 05:01:19,256 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 05:01:19,256 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 05:01:19,256 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 05:01:19,256 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 05:01:19,256 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 05:01:19,257 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 05:01:19,257 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 05:01:19,258 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 05:01:19,258 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 05:01:19,259 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 05:01:19,259 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_478797a7-ddd1-4b57-b875-863d8c6afb03/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_478797a7-ddd1-4b57-b875-863d8c6afb03/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 -> 15ed19eb5795bed80c0398d5ac36df37e483370c3431a4e2b1af686401d8c839
[2022-12-14 05:01:19,426 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 05:01:19,447 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 05:01:19,449 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 05:01:19,451 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 05:01:19,451 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 05:01:19,452 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label56.c
[2022-12-14 05:01:22,028 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 05:01:23,125 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 05:01:23,125 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/sv-benchmarks/c/eca-rers2012/Problem07_label56.c
[2022-12-14 05:01:23,267 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/data/88480f836/493cb6c0dcd8492290b82c0409be2ad7/FLAG2d2495bad
[2022-12-14 05:01:23,603 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/data/88480f836/493cb6c0dcd8492290b82c0409be2ad7
[2022-12-14 05:01:23,606 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 05:01:23,607 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 05:01:23,609 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 05:01:23,609 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 05:01:23,612 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 05:01:23,612 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:01:23" (1/1) ...
[2022-12-14 05:01:23,613 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cfcb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:23, skipping insertion in model container
[2022-12-14 05:01:23,613 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:01:23" (1/1) ...
[2022-12-14 05:01:23,619 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 05:01:24,174 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 05:01:33,840 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_478797a7-ddd1-4b57-b875-863d8c6afb03/sv-benchmarks/c/eca-rers2012/Problem07_label56.c[2773929,2773942]
[2022-12-14 05:01:33,889 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 05:01:33,898 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 05:01:39,679 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_478797a7-ddd1-4b57-b875-863d8c6afb03/sv-benchmarks/c/eca-rers2012/Problem07_label56.c[2773929,2773942]
[2022-12-14 05:01:39,684 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 05:01:40,269 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 05:01:40,270 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40 WrapperNode
[2022-12-14 05:01:40,270 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 05:01:40,270 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 05:01:40,270 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 05:01:40,271 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 05:01:40,276 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:40,573 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:41,689 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 05:01:41,689 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 05:01:41,690 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 05:01:41,690 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 05:01:41,691 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 05:01:41,699 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:41,699 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:41,940 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:41,940 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:42,488 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:42,657 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:42,737 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:42,790 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:43,043 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 05:01:43,044 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 05:01:43,044 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 05:01:43,044 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 05:01:43,045 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (1/1) ...
[2022-12-14 05:01:43,050 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 05:01:43,059 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 05:01:43,071 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 05:01:43,073 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_478797a7-ddd1-4b57-b875-863d8c6afb03/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 05:01:43,103 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 05:01:43,103 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 05:01:43,103 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 05:01:43,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 05:01:43,209 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 05:01:43,210 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 05:02:12,971 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 05:02:13,652 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 05:02:13,652 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 05:02:13,660 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:13 BoogieIcfgContainer
[2022-12-14 05:02:13,660 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 05:02:13,661 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 05:02:13,661 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 05:02:13,663 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 05:02:13,664 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:01:23" (1/3) ...
[2022-12-14 05:02:13,664 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2706dc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:13, skipping insertion in model container
[2022-12-14 05:02:13,664 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:40" (2/3) ...
[2022-12-14 05:02:13,664 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2706dc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:13, skipping insertion in model container
[2022-12-14 05:02:13,665 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:13" (3/3) ...
[2022-12-14 05:02:13,666 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label56.c
[2022-12-14 05:02:13,679 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 05:02:13,679 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 05:02:13,801 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 05:02:13,806 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;@80791da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 05:02:13,806 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 05:02:13,829 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 05:02:14,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 05:02:14,407 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:02:14,410 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 05:02:14,411 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:02:14,415 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:02:14,418 INFO  L85        PathProgramCache]: Analyzing trace with hash 184880889, now seen corresponding path program 1 times
[2022-12-14 05:02:14,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:02:14,425 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983276955]
[2022-12-14 05:02:14,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:02:14,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:02:16,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:03:08,612 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 05:03:08,613 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:03:08,613 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983276955]
[2022-12-14 05:03:08,613 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983276955] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:03:08,613 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:03:08,614 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 05:03:08,615 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919039341]
[2022-12-14 05:03:08,616 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:03:08,625 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 05:03:08,625 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:03:08,651 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 05:03:08,652 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 05:03:08,671 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 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 05:03:59,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:03:59,302 INFO  L93              Difference]: Finished difference Result 40533 states and 80861 transitions.
[2022-12-14 05:03:59,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 05:03:59,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 05:03:59,328 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:03:59,438 INFO  L225             Difference]: With dead ends: 40533
[2022-12-14 05:03:59,438 INFO  L226             Difference]: Without dead ends: 30393
[2022-12-14 05:03:59,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 05:03:59,458 INFO  L413           NwaCegarLoop]: 1677 mSDtfsCounter, 11611 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 50319 mSolverCounterSat, 26079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11611 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 76398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26079 IncrementalHoareTripleChecker+Valid, 50319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time
[2022-12-14 05:03:59,459 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11611 Valid, 1779 Invalid, 76398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26079 Valid, 50319 Invalid, 0 Unknown, 0 Unchecked, 49.6s Time]
[2022-12-14 05:03:59,513 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30393 states.
[2022-12-14 05:04:00,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30393 to 30393.
[2022-12-14 05:04:00,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30393 states, 30392 states have (on average 1.6114438010002632) internal successors, (48975), 30392 states have internal predecessors, (48975), 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 05:04:00,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30393 states to 30393 states and 48975 transitions.
[2022-12-14 05:04:00,098 INFO  L78                 Accepts]: Start accepts. Automaton has 30393 states and 48975 transitions. Word has length 10085
[2022-12-14 05:04:00,110 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:04:00,111 INFO  L495      AbstractCegarLoop]: Abstraction has 30393 states and 48975 transitions.
[2022-12-14 05:04:00,113 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 05:04:00,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 30393 states and 48975 transitions.
[2022-12-14 05:04:01,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12985
[2022-12-14 05:04:01,082 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:04:01,088 INFO  L195           NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2022-12-14 05:04:01,088 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 05:04:01,088 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:04:01,089 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:04:01,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 147763096, now seen corresponding path program 1 times
[2022-12-14 05:04:01,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:04:01,092 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280500439]
[2022-12-14 05:04:01,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:04:01,093 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:04:02,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:04:37,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-12-14 05:04:37,447 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:04:37,448 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280500439]
[2022-12-14 05:04:37,448 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280500439] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:04:37,448 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:04:37,449 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 05:04:37,449 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208361678]
[2022-12-14 05:04:37,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:04:37,457 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:04:37,458 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:04:37,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:04:37,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:04:37,468 INFO  L87              Difference]: Start difference. First operand 30393 states and 48975 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:05:08,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:05:08,005 INFO  L93              Difference]: Finished difference Result 70915 states and 126650 transitions.
[2022-12-14 05:05:08,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:05:08,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 12984
[2022-12-14 05:05:08,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:05:08,059 INFO  L225             Difference]: With dead ends: 70915
[2022-12-14 05:05:08,059 INFO  L226             Difference]: Without dead ends: 50653
[2022-12-14 05:05:08,072 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 05:05:08,073 INFO  L413           NwaCegarLoop]: 5660 mSDtfsCounter, 10329 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28847 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10329 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 40605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 05:05:08,074 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10329 Valid, 5708 Invalid, 40605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28847 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 05:05:08,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50653 states.
[2022-12-14 05:05:08,727 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50653 to 50653.
[2022-12-14 05:05:08,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50653 states, 50652 states have (on average 1.5600963436784332) internal successors, (79022), 50652 states have internal predecessors, (79022), 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 05:05:08,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50653 states to 50653 states and 79022 transitions.
[2022-12-14 05:05:08,826 INFO  L78                 Accepts]: Start accepts. Automaton has 50653 states and 79022 transitions. Word has length 12984
[2022-12-14 05:05:08,828 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:05:08,828 INFO  L495      AbstractCegarLoop]: Abstraction has 50653 states and 79022 transitions.
[2022-12-14 05:05:08,830 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:05:08,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 50653 states and 79022 transitions.
[2022-12-14 05:05:09,736 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12992
[2022-12-14 05:05:09,737 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:05:09,740 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 05:05:09,740 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 05:05:09,740 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:05:09,741 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:05:09,743 INFO  L85        PathProgramCache]: Analyzing trace with hash 1107848819, now seen corresponding path program 1 times
[2022-12-14 05:05:09,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:05:09,743 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118943059]
[2022-12-14 05:05:09,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:05:09,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:05:11,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:05:45,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 2905 backedges. 2895 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-12-14 05:05:45,286 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:05:45,286 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118943059]
[2022-12-14 05:05:45,286 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118943059] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:05:45,286 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:05:45,287 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 05:05:45,288 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074558605]
[2022-12-14 05:05:45,288 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:05:45,293 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:05:45,293 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:05:45,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:05:45,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:05:45,301 INFO  L87              Difference]: Start difference. First operand 50653 states and 79022 transitions. Second operand  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 05:06:14,132 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:06:14,133 INFO  L93              Difference]: Finished difference Result 131695 states and 216791 transitions.
[2022-12-14 05:06:14,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:06:14,134 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 12991
[2022-12-14 05:06:14,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:06:14,245 INFO  L225             Difference]: With dead ends: 131695
[2022-12-14 05:06:14,245 INFO  L226             Difference]: Without dead ends: 91173
[2022-12-14 05:06:14,314 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 05:06:14,315 INFO  L413           NwaCegarLoop]: 6908 mSDtfsCounter, 9080 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30225 mSolverCounterSat, 11076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9080 SdHoareTripleChecker+Valid, 6956 SdHoareTripleChecker+Invalid, 41301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11076 IncrementalHoareTripleChecker+Valid, 30225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time
[2022-12-14 05:06:14,315 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9080 Valid, 6956 Invalid, 41301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11076 Valid, 30225 Invalid, 0 Unknown, 0 Unchecked, 28.1s Time]
[2022-12-14 05:06:14,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91173 states.
[2022-12-14 05:06:15,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91173 to 91173.
[2022-12-14 05:06:15,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91173 states, 91172 states have (on average 1.4765059448076163) internal successors, (134616), 91172 states have internal predecessors, (134616), 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 05:06:15,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91173 states to 91173 states and 134616 transitions.
[2022-12-14 05:06:15,177 INFO  L78                 Accepts]: Start accepts. Automaton has 91173 states and 134616 transitions. Word has length 12991
[2022-12-14 05:06:15,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:06:15,179 INFO  L495      AbstractCegarLoop]: Abstraction has 91173 states and 134616 transitions.
[2022-12-14 05:06:15,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 05:06:15,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 91173 states and 134616 transitions.
[2022-12-14 05:06:16,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12998
[2022-12-14 05:06:16,233 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:06:16,236 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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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]
[2022-12-14 05:06:16,236 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 05:06:16,237 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:06:16,237 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:06:16,239 INFO  L85        PathProgramCache]: Analyzing trace with hash -1178316700, now seen corresponding path program 1 times
[2022-12-14 05:06:16,239 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:06:16,239 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067730945]
[2022-12-14 05:06:16,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:06:16,240 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:06:17,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:06:52,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 2917 backedges. 2901 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-12-14 05:06:52,576 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:06:52,576 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067730945]
[2022-12-14 05:06:52,576 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067730945] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:06:52,576 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:06:52,577 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 05:06:52,577 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451620342]
[2022-12-14 05:06:52,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:06:52,582 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:06:52,582 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:06:52,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:06:52,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:06:52,591 INFO  L87              Difference]: Start difference. First operand 91173 states and 134616 transitions. Second operand  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 05:07:24,817 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:07:24,817 INFO  L93              Difference]: Finished difference Result 253255 states and 383573 transitions.
[2022-12-14 05:07:24,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:07:24,819 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 12997
[2022-12-14 05:07:24,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:07:25,013 INFO  L225             Difference]: With dead ends: 253255
[2022-12-14 05:07:25,013 INFO  L226             Difference]: Without dead ends: 172213
[2022-12-14 05:07:25,051 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 05:07:25,052 INFO  L413           NwaCegarLoop]: 6657 mSDtfsCounter, 9197 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29971 mSolverCounterSat, 11039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9197 SdHoareTripleChecker+Valid, 6705 SdHoareTripleChecker+Invalid, 41010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11039 IncrementalHoareTripleChecker+Valid, 29971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time
[2022-12-14 05:07:25,052 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9197 Valid, 6705 Invalid, 41010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11039 Valid, 29971 Invalid, 0 Unknown, 0 Unchecked, 31.2s Time]
[2022-12-14 05:07:25,154 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 172213 states.
[2022-12-14 05:07:26,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 172213 to 172213.
[2022-12-14 05:07:26,501 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 172213 states, 172212 states have (on average 1.3797760899356606) internal successors, (237614), 172212 states have internal predecessors, (237614), 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 05:07:26,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 172213 states to 172213 states and 237614 transitions.
[2022-12-14 05:07:26,696 INFO  L78                 Accepts]: Start accepts. Automaton has 172213 states and 237614 transitions. Word has length 12997
[2022-12-14 05:07:26,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:07:26,698 INFO  L495      AbstractCegarLoop]: Abstraction has 172213 states and 237614 transitions.
[2022-12-14 05:07:26,700 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.666666666667) internal successors, (12983), 2 states have internal predecessors, (12983), 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 05:07:26,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 172213 states and 237614 transitions.
[2022-12-14 05:07:28,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13008
[2022-12-14 05:07:28,003 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:07:28,011 INFO  L195           NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:28,012 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 05:07:28,012 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:07:28,012 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:07:28,016 INFO  L85        PathProgramCache]: Analyzing trace with hash -1878948711, now seen corresponding path program 1 times
[2022-12-14 05:07:28,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:07:28,016 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540459267]
[2022-12-14 05:07:28,018 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:07:28,018 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:07:29,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:08:09,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 2934 backedges. 2908 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2022-12-14 05:08:09,322 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:08:09,322 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540459267]
[2022-12-14 05:08:09,322 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540459267] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:08:09,322 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:08:09,323 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 05:08:09,323 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849781229]
[2022-12-14 05:08:09,324 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:08:09,329 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:08:09,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:08:09,335 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:08:09,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:08:09,337 INFO  L87              Difference]: Start difference. First operand 172213 states and 237614 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:08:40,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:08:40,965 INFO  L93              Difference]: Finished difference Result 496375 states and 692567 transitions.
[2022-12-14 05:08:40,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:08:40,967 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 13007
[2022-12-14 05:08:40,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:08:41,326 INFO  L225             Difference]: With dead ends: 496375
[2022-12-14 05:08:41,326 INFO  L226             Difference]: Without dead ends: 334293
[2022-12-14 05:08:41,400 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 05:08:41,400 INFO  L413           NwaCegarLoop]: 5665 mSDtfsCounter, 10847 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27317 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10847 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 40347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 05:08:41,401 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10847 Valid, 5713 Invalid, 40347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27317 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 05:08:41,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334293 states.
[2022-12-14 05:08:44,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334293 to 334293.
[2022-12-14 05:08:44,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 334293 states, 334292 states have (on average 1.2797195266413794) internal successors, (427800), 334292 states have internal predecessors, (427800), 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 05:08:44,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334293 states to 334293 states and 427800 transitions.
[2022-12-14 05:08:44,776 INFO  L78                 Accepts]: Start accepts. Automaton has 334293 states and 427800 transitions. Word has length 13007
[2022-12-14 05:08:44,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:08:44,778 INFO  L495      AbstractCegarLoop]: Abstraction has 334293 states and 427800 transitions.
[2022-12-14 05:08:44,779 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:08:44,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 334293 states and 427800 transitions.
[2022-12-14 05:08:46,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13043
[2022-12-14 05:08:46,270 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:08:46,273 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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[2022-12-14 05:08:46,273 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 05:08:46,273 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:08:46,274 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:08:46,275 INFO  L85        PathProgramCache]: Analyzing trace with hash 1525608615, now seen corresponding path program 1 times
[2022-12-14 05:08:46,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:08:46,275 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252093300]
[2022-12-14 05:08:46,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:08:46,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:08:47,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:09:22,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 3004 backedges. 2943 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2022-12-14 05:09:22,167 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:09:22,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252093300]
[2022-12-14 05:09:22,167 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252093300] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:09:22,167 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:09:22,168 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 05:09:22,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145375494]
[2022-12-14 05:09:22,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:09:22,173 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:09:22,173 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:09:22,178 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:09:22,178 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:09:22,181 INFO  L87              Difference]: Start difference. First operand 334293 states and 427800 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:09:54,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:09:54,169 INFO  L93              Difference]: Finished difference Result 982615 states and 1263125 transitions.
[2022-12-14 05:09:54,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:09:54,171 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 13042
[2022-12-14 05:09:54,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:09:54,950 INFO  L225             Difference]: With dead ends: 982615
[2022-12-14 05:09:54,951 INFO  L226             Difference]: Without dead ends: 658453
[2022-12-14 05:09:55,102 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 05:09:55,102 INFO  L413           NwaCegarLoop]: 7705 mSDtfsCounter, 8806 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29677 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8806 SdHoareTripleChecker+Valid, 7753 SdHoareTripleChecker+Invalid, 41347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time
[2022-12-14 05:09:55,103 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8806 Valid, 7753 Invalid, 41347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29677 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time]
[2022-12-14 05:09:55,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 658453 states.
[2022-12-14 05:10:01,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 658453 to 658453.
[2022-12-14 05:10:01,286 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 658453 states, 658452 states have (on average 1.2159185483528032) internal successors, (800624), 658452 states have internal predecessors, (800624), 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 05:10:02,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 658453 states to 658453 states and 800624 transitions.
[2022-12-14 05:10:02,517 INFO  L78                 Accepts]: Start accepts. Automaton has 658453 states and 800624 transitions. Word has length 13042
[2022-12-14 05:10:02,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 05:10:02,519 INFO  L495      AbstractCegarLoop]: Abstraction has 658453 states and 800624 transitions.
[2022-12-14 05:10:02,521 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 05:10:02,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 658453 states and 800624 transitions.
[2022-12-14 05:10:04,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13135
[2022-12-14 05:10:04,251 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 05:10:04,255 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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[2022-12-14 05:10:04,255 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 05:10:04,255 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 05:10:04,256 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 05:10:04,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 157523443, now seen corresponding path program 1 times
[2022-12-14 05:10:04,257 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 05:10:04,258 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290182343]
[2022-12-14 05:10:04,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 05:10:04,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 05:10:06,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 05:10:41,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 3191 backedges. 3187 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 05:10:41,309 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 05:10:41,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290182343]
[2022-12-14 05:10:41,309 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290182343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 05:10:41,309 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 05:10:41,310 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 05:10:41,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706146323]
[2022-12-14 05:10:41,310 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 05:10:41,315 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 05:10:41,315 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 05:10:41,320 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 05:10:41,320 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 05:10:41,323 INFO  L87              Difference]: Start difference. First operand 658453 states and 800624 transitions. Second operand  has 3 states, 3 states have (on average 4377.0) internal successors, (13131), 3 states have internal predecessors, (13131), 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 05:11:16,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 05:11:16,036 INFO  L93              Difference]: Finished difference Result 1955095 states and 2381597 transitions.
[2022-12-14 05:11:16,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 05:11:16,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4377.0) internal successors, (13131), 3 states have internal predecessors, (13131), 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 13134
[2022-12-14 05:11:16,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 05:11:17,604 INFO  L225             Difference]: With dead ends: 1955095
[2022-12-14 05:11:17,604 INFO  L226             Difference]: Without dead ends: 1306773
[2022-12-14 05:11:17,838 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 05:11:17,839 INFO  L413           NwaCegarLoop]: 7240 mSDtfsCounter, 11079 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32911 mSolverCounterSat, 8847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11079 SdHoareTripleChecker+Valid, 7288 SdHoareTripleChecker+Invalid, 41758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8847 IncrementalHoareTripleChecker+Valid, 32911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time
[2022-12-14 05:11:17,839 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11079 Valid, 7288 Invalid, 41758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8847 Valid, 32911 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time]
[2022-12-14 05:11:18,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1306773 states.
[2022-12-14 05:11:29,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306773 to 1306773.
[2022-12-14 05:11:30,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1306773 states, 1306772 states have (on average 1.166622792652429) internal successors, (1524510), 1306772 states have internal predecessors, (1524510), 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)