./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label11.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/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 3865ab852a9d72332f7357fb6365a1847ad0233a5217019e907317c702168a28
--- 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 14:04:44,495 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 14:04:44,497 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 14:04:44,514 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 14:04:44,514 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 14:04:44,515 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 14:04:44,516 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 14:04:44,518 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 14:04:44,519 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 14:04:44,520 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 14:04:44,520 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 14:04:44,521 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 14:04:44,522 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 14:04:44,523 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 14:04:44,524 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 14:04:44,525 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 14:04:44,525 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 14:04:44,526 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 14:04:44,528 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 14:04:44,529 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 14:04:44,530 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 14:04:44,531 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 14:04:44,532 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 14:04:44,533 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 14:04:44,536 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 14:04:44,537 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 14:04:44,537 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 14:04:44,538 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 14:04:44,538 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 14:04:44,539 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 14:04:44,539 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 14:04:44,540 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 14:04:44,540 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 14:04:44,541 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 14:04:44,542 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 14:04:44,542 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 14:04:44,543 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 14:04:44,543 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 14:04:44,543 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 14:04:44,544 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 14:04:44,544 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 14:04:44,545 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 14:04:44,564 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 14:04:44,564 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 14:04:44,565 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 14:04:44,565 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 14:04:44,569 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 14:04:44,570 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 14:04:44,570 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 14:04:44,570 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 14:04:44,570 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 14:04:44,570 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 14:04:44,570 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 14:04:44,571 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 14:04:44,571 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 14:04:44,571 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 14:04:44,571 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 14:04:44,571 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 14:04:44,571 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 14:04:44,572 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 14:04:44,572 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 14:04:44,572 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 14:04:44,572 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 14:04:44,573 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 14:04:44,574 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 14:04:44,574 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 14:04:44,574 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 14:04:44,574 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 14:04:44,574 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:04:44,574 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 14:04:44,574 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 14:04:44,575 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 14:04:44,575 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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/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 -> 3865ab852a9d72332f7357fb6365a1847ad0233a5217019e907317c702168a28
[2022-12-14 14:04:44,744 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 14:04:44,760 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 14:04:44,762 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 14:04:44,763 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 14:04:44,764 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 14:04:44,764 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label11.c
[2022-12-14 14:04:47,414 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 14:04:48,486 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 14:04:48,486 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/sv-benchmarks/c/eca-rers2012/Problem07_label11.c
[2022-12-14 14:04:48,608 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/data/8cd42025d/06287e51f24b4df5b4bc997a73b46d03/FLAGe43c677d8
[2022-12-14 14:04:48,619 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/data/8cd42025d/06287e51f24b4df5b4bc997a73b46d03
[2022-12-14 14:04:48,621 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 14:04:48,622 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 14:04:48,622 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 14:04:48,623 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 14:04:48,625 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 14:04:48,626 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:48" (1/1) ...
[2022-12-14 14:04:48,626 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110aa979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:48, skipping insertion in model container
[2022-12-14 14:04:48,626 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:48" (1/1) ...
[2022-12-14 14:04:48,632 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 14:04:49,197 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 14:04:59,073 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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/sv-benchmarks/c/eca-rers2012/Problem07_label11.c[2769159,2769172]
[2022-12-14 14:04:59,131 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:04:59,139 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 14:05:05,024 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_cbdf9dba-2870-4ff3-8977-33754d4d09e9/sv-benchmarks/c/eca-rers2012/Problem07_label11.c[2769159,2769172]
[2022-12-14 14:05:05,032 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:05:05,664 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 14:05:05,664 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05 WrapperNode
[2022-12-14 14:05:05,665 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 14:05:05,665 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 14:05:05,665 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 14:05:05,665 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 14:05:05,670 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:05,979 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:07,109 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 14:05:07,110 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 14:05:07,110 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 14:05:07,110 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 14:05:07,110 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 14:05:07,118 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:07,118 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:07,340 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:07,340 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:07,900 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:08,020 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:08,121 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:08,184 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:08,496 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 14:05:08,497 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 14:05:08,497 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 14:05:08,497 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 14:05:08,498 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (1/1) ...
[2022-12-14 14:05:08,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:05:08,513 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 14:05:08,525 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 14:05:08,528 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbdf9dba-2870-4ff3-8977-33754d4d09e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 14:05:08,557 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 14:05:08,558 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 14:05:08,558 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 14:05:08,558 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 14:05:08,663 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 14:05:08,664 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 14:05:40,079 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 14:05:40,781 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 14:05:40,781 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 14:05:40,789 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:05:40 BoogieIcfgContainer
[2022-12-14 14:05:40,789 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 14:05:40,790 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 14:05:40,790 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 14:05:40,793 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 14:05:40,793 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:04:48" (1/3) ...
[2022-12-14 14:05:40,793 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94adc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:05:40, skipping insertion in model container
[2022-12-14 14:05:40,793 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:05" (2/3) ...
[2022-12-14 14:05:40,793 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94adc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:05:40, skipping insertion in model container
[2022-12-14 14:05:40,793 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:05:40" (3/3) ...
[2022-12-14 14:05:40,794 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label11.c
[2022-12-14 14:05:40,807 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 14:05:40,807 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 14:05:40,930 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 14:05:40,935 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;@737543c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 14:05:40,935 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 14:05:40,958 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 14:05:41,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 14:05:41,642 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:05:41,645 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 14:05:41,647 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:05:41,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:05:41,660 INFO  L85        PathProgramCache]: Analyzing trace with hash 64770794, now seen corresponding path program 1 times
[2022-12-14 14:05:41,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:05:41,667 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908322097]
[2022-12-14 14:05:41,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:05:41,669 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:05:43,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:06:12,632 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 14:06:12,633 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:06:12,633 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908322097]
[2022-12-14 14:06:12,633 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908322097] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:06:12,633 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:06:12,634 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:06:12,635 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350963989]
[2022-12-14 14:06:12,636 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:06:12,646 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:06:12,646 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:06:12,673 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:06:12,673 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:06:12,691 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 14:06:42,959 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:06:42,959 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 14:06:42,960 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:06:42,964 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 14:06:42,981 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:06:43,041 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 14:06:43,041 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 14:06:43,054 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 14:06:43,057 INFO  L413           NwaCegarLoop]: 4042 mSDtfsCounter, 416 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30830 mSolverCounterSat, 12469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12469 IncrementalHoareTripleChecker+Valid, 30830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time
[2022-12-14 14:06:43,058 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 4092 Invalid, 43299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12469 Valid, 30830 Invalid, 0 Unknown, 0 Unchecked, 29.7s Time]
[2022-12-14 14:06:43,089 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 14:06:43,378 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 14:06:43,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.799279439344586) internal successors, (36457), 20262 states have internal predecessors, (36457), 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 14:06:43,448 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36457 transitions.
[2022-12-14 14:06:43,450 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36457 transitions. Word has length 10085
[2022-12-14 14:06:43,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:06:43,461 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36457 transitions.
[2022-12-14 14:06:43,464 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 14:06:43,464 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36457 transitions.
[2022-12-14 14:06:44,017 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 14:06:44,017 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:06:44,020 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 14:06:44,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 14:06:44,020 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:06:44,021 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:06:44,024 INFO  L85        PathProgramCache]: Analyzing trace with hash 482757906, now seen corresponding path program 1 times
[2022-12-14 14:06:44,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:06:44,024 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590598544]
[2022-12-14 14:06:44,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:06:44,025 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:06:45,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:07:08,075 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 14:07:08,075 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:07:08,075 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590598544]
[2022-12-14 14:07:08,075 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590598544] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:07:08,076 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:07:08,077 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:07:08,077 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336268034]
[2022-12-14 14:07:08,077 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:07:08,084 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:07:08,084 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:07:08,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:07:08,092 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:07:08,095 INFO  L87              Difference]: Start difference. First operand 20263 states and 36457 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 14:07:38,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:07:38,127 INFO  L93              Difference]: Finished difference Result 60785 states and 109368 transitions.
[2022-12-14 14:07:38,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:07:38,130 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 14:07:38,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:07:38,195 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 14:07:38,195 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 14:07:38,208 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 14:07:38,209 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s 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, 29.5s IncrementalHoareTripleChecker+Time
[2022-12-14 14:07:38,209 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4873 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time]
[2022-12-14 14:07:38,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 14:07:38,670 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 14:07:38,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.610680617935936) internal successors, (65268), 40522 states have internal predecessors, (65268), 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 14:07:38,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65268 transitions.
[2022-12-14 14:07:38,754 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65268 transitions. Word has length 10089
[2022-12-14 14:07:38,755 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:07:38,755 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65268 transitions.
[2022-12-14 14:07:38,757 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 14:07:38,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65268 transitions.
[2022-12-14 14:07:39,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2022-12-14 14:07:39,327 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:07:39,329 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 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[2022-12-14 14:07:39,329 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 14:07:39,330 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:07:39,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:07:39,332 INFO  L85        PathProgramCache]: Analyzing trace with hash -1232053971, now seen corresponding path program 1 times
[2022-12-14 14:07:39,332 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:07:39,333 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958781870]
[2022-12-14 14:07:39,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:07:39,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:07:40,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:08:02,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:08:02,339 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:08:02,339 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958781870]
[2022-12-14 14:08:02,339 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958781870] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:08:02,340 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:08:02,341 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:08:02,341 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811284020]
[2022-12-14 14:08:02,341 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:08:02,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:08:02,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:08:02,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:08:02,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:08:02,355 INFO  L87              Difference]: Start difference. First operand 40523 states and 65268 transitions. Second operand  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 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 14:08:32,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:08:32,872 INFO  L93              Difference]: Finished difference Result 121565 states and 195801 transitions.
[2022-12-14 14:08:32,872 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:08:32,874 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 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 10091
[2022-12-14 14:08:32,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:08:32,948 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 14:08:32,949 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 14:08:32,979 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 14:08:32,980 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 13625 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time
[2022-12-14 14:08:32,980 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 4865 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time]
[2022-12-14 14:08:33,026 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 14:08:33,601 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 14:08:33,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.467288566422349) internal successors, (118912), 81042 states have internal predecessors, (118912), 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 14:08:33,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 118912 transitions.
[2022-12-14 14:08:33,752 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 118912 transitions. Word has length 10091
[2022-12-14 14:08:33,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:08:33,753 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 118912 transitions.
[2022-12-14 14:08:33,754 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 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 14:08:33,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 118912 transitions.
[2022-12-14 14:08:34,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10103
[2022-12-14 14:08:34,479 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:08:34,481 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:34,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 14:08:34,481 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:08:34,482 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:08:34,483 INFO  L85        PathProgramCache]: Analyzing trace with hash -1198107986, now seen corresponding path program 1 times
[2022-12-14 14:08:34,483 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:08:34,484 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045376265]
[2022-12-14 14:08:34,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:08:34,484 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:08:35,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:08:59,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-12-14 14:08:59,309 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:08:59,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045376265]
[2022-12-14 14:08:59,309 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045376265] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:08:59,309 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:08:59,310 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:08:59,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268263583]
[2022-12-14 14:08:59,310 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:08:59,315 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:08:59,316 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:08:59,320 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:08:59,320 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:08:59,323 INFO  L87              Difference]: Start difference. First operand 81043 states and 118912 transitions. Second operand  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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 14:09:31,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:09:31,275 INFO  L93              Difference]: Finished difference Result 243125 states and 356733 transitions.
[2022-12-14 14:09:31,275 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:09:31,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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 10102
[2022-12-14 14:09:31,276 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:09:31,424 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 14:09:31,425 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 14:09:31,453 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 14:09:31,453 INFO  L413           NwaCegarLoop]: 6088 mSDtfsCounter, 13413 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27411 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13413 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 40441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:09:31,454 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13413 Valid, 6136 Invalid, 40441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27411 Invalid, 0 Unknown, 0 Unchecked, 31.0s Time]
[2022-12-14 14:09:31,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 14:09:32,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 14:09:32,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3329549240507892) internal successors, (216048), 162082 states have internal predecessors, (216048), 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 14:09:32,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 216048 transitions.
[2022-12-14 14:09:32,911 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 216048 transitions. Word has length 10102
[2022-12-14 14:09:32,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:09:32,912 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 216048 transitions.
[2022-12-14 14:09:32,914 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 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 14:09:32,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 216048 transitions.
[2022-12-14 14:09:33,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10134
[2022-12-14 14:09:33,854 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:09:33,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:33,857 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 14:09:33,857 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:09:33,857 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:09:33,860 INFO  L85        PathProgramCache]: Analyzing trace with hash 778308452, now seen corresponding path program 1 times
[2022-12-14 14:09:33,860 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:09:33,860 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838861019]
[2022-12-14 14:09:33,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:09:33,861 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:09:35,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:09:55,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:09:55,649 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:09:55,649 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838861019]
[2022-12-14 14:09:55,649 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838861019] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:09:55,649 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:09:55,650 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:09:55,650 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570331173]
[2022-12-14 14:09:55,650 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:09:55,654 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:09:55,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:09:55,659 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:09:55,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:09:55,661 INFO  L87              Difference]: Start difference. First operand 162083 states and 216048 transitions. Second operand  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 14:10:27,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:10:27,548 INFO  L93              Difference]: Finished difference Result 486245 states and 648141 transitions.
[2022-12-14 14:10:27,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:10:27,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 10133
[2022-12-14 14:10:27,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:10:27,884 INFO  L225             Difference]: With dead ends: 486245
[2022-12-14 14:10:27,884 INFO  L226             Difference]: Without dead ends: 324163
[2022-12-14 14:10:27,953 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 14:10:27,954 INFO  L413           NwaCegarLoop]: 7309 mSDtfsCounter, 11709 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30394 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11709 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 41475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time
[2022-12-14 14:10:27,954 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11709 Valid, 7357 Invalid, 41475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30394 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time]
[2022-12-14 14:10:28,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324163 states.
[2022-12-14 14:10:30,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324163 to 324163.
[2022-12-14 14:10:30,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 324163 states, 324162 states have (on average 1.255440181143996) internal successors, (406966), 324162 states have internal predecessors, (406966), 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 14:10:31,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324163 states to 324163 states and 406966 transitions.
[2022-12-14 14:10:31,475 INFO  L78                 Accepts]: Start accepts. Automaton has 324163 states and 406966 transitions. Word has length 10133
[2022-12-14 14:10:31,478 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:10:31,479 INFO  L495      AbstractCegarLoop]: Abstraction has 324163 states and 406966 transitions.
[2022-12-14 14:10:31,480 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 14:10:31,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 324163 states and 406966 transitions.
[2022-12-14 14:10:32,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10190
[2022-12-14 14:10:32,412 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:10:32,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:32,414 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 14:10:32,414 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:10:32,414 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:10:32,415 INFO  L85        PathProgramCache]: Analyzing trace with hash 650776650, now seen corresponding path program 1 times
[2022-12-14 14:10:32,416 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:10:32,416 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412610248]
[2022-12-14 14:10:32,416 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:10:32,417 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:10:33,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:10:54,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 14:10:54,958 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:10:54,958 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412610248]
[2022-12-14 14:10:54,958 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412610248] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:10:54,958 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:10:54,959 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:10:54,959 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516156089]
[2022-12-14 14:10:54,959 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:10:54,966 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:10:54,966 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:10:54,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:10:54,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:10:54,973 INFO  L87              Difference]: Start difference. First operand 324163 states and 406966 transitions. Second operand  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 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 14:11:26,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:11:26,494 INFO  L93              Difference]: Finished difference Result 972485 states and 1220895 transitions.
[2022-12-14 14:11:26,494 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:11:26,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 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 10189
[2022-12-14 14:11:26,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:11:27,227 INFO  L225             Difference]: With dead ends: 972485
[2022-12-14 14:11:27,228 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:11:27,389 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 14:11:27,390 INFO  L413           NwaCegarLoop]: 5911 mSDtfsCounter, 12499 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29708 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12499 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 40742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time
[2022-12-14 14:11:27,391 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12499 Valid, 5959 Invalid, 40742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29708 Invalid, 0 Unknown, 0 Unchecked, 28.9s Time]
[2022-12-14 14:11:27,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:11:32,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:11:32,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1914727558219527) internal successors, (772458), 648322 states have internal predecessors, (772458), 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 14:11:34,026 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 772458 transitions.
[2022-12-14 14:11:34,027 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 772458 transitions. Word has length 10189
[2022-12-14 14:11:34,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:11:34,027 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 772458 transitions.
[2022-12-14 14:11:34,029 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 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 14:11:34,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 772458 transitions.
[2022-12-14 14:11:35,323 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10321
[2022-12-14 14:11:35,323 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:11:35,325 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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 14:11:35,325 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 14:11:35,325 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:11:35,326 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:11:35,327 INFO  L85        PathProgramCache]: Analyzing trace with hash 1217413275, now seen corresponding path program 1 times
[2022-12-14 14:11:35,327 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:11:35,328 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019050751]
[2022-12-14 14:11:35,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:11:35,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:11:36,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:12:09,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:12:09,141 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:12:09,141 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019050751]
[2022-12-14 14:12:09,141 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019050751] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:12:09,141 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:12:09,142 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:12:09,142 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22573693]
[2022-12-14 14:12:09,142 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:12:09,147 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:12:09,147 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:12:09,152 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:12:09,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:12:09,155 INFO  L87              Difference]: Start difference. First operand 648323 states and 772458 transitions. Second operand  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 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 14:12:37,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:12:37,061 INFO  L93              Difference]: Finished difference Result 1296645 states and 1544915 transitions.
[2022-12-14 14:12:37,062 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:12:37,063 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 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 10320
[2022-12-14 14:12:37,063 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:12:37,831 INFO  L225             Difference]: With dead ends: 1296645
[2022-12-14 14:12:37,832 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:12:38,017 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 14:12:38,017 INFO  L413           NwaCegarLoop]: 9994 mSDtfsCounter, 9977 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29469 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9977 SdHoareTripleChecker+Valid, 10042 SdHoareTripleChecker+Invalid, 34294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time
[2022-12-14 14:12:38,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9977 Valid, 10042 Invalid, 34294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29469 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time]
[2022-12-14 14:12:38,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:12:43,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:12:43,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1907323829825303) internal successors, (771978), 648322 states have internal predecessors, (771978), 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 14:12:44,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 771978 transitions.
[2022-12-14 14:12:44,730 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 771978 transitions. Word has length 10320
[2022-12-14 14:12:44,731 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:12:44,731 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 771978 transitions.
[2022-12-14 14:12:44,732 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 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 14:12:44,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 771978 transitions.
[2022-12-14 14:12:46,265 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10511
[2022-12-14 14:12:46,265 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:12:46,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-14 14:12:46,267 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 14:12:46,267 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:12:46,267 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:12:46,269 INFO  L85        PathProgramCache]: Analyzing trace with hash -613917898, now seen corresponding path program 1 times
[2022-12-14 14:12:46,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:12:46,269 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97556733]
[2022-12-14 14:12:46,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:12:46,270 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:12:47,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:13:18,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:13:18,621 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:13:18,621 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97556733]
[2022-12-14 14:13:18,621 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97556733] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:13:18,622 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:13:18,622 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:13:18,622 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991439306]
[2022-12-14 14:13:18,622 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:13:18,626 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:13:18,626 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:13:18,631 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:13:18,631 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:13:18,632 INFO  L87              Difference]: Start difference. First operand 648323 states and 771978 transitions. Second operand  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 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 14:13:49,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:13:49,525 INFO  L93              Difference]: Finished difference Result 1620805 states and 1911307 transitions.
[2022-12-14 14:13:49,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:13:49,527 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 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 10510
[2022-12-14 14:13:49,527 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:13:50,590 INFO  L225             Difference]: With dead ends: 1620805
[2022-12-14 14:13:50,590 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 14:13:50,776 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 14:13:50,777 INFO  L413           NwaCegarLoop]: 10007 mSDtfsCounter, 9760 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30619 mSolverCounterSat, 6484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9760 SdHoareTripleChecker+Valid, 10055 SdHoareTripleChecker+Invalid, 37103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6484 IncrementalHoareTripleChecker+Valid, 30619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time
[2022-12-14 14:13:50,777 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9760 Valid, 10055 Invalid, 37103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6484 Valid, 30619 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time]
[2022-12-14 14:13:51,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 14:13:58,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 14:13:59,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1497529003107512) internal successors, (1118114), 972482 states have internal predecessors, (1118114), 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 14:14:00,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1118114 transitions.
[2022-12-14 14:14:00,776 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1118114 transitions. Word has length 10510
[2022-12-14 14:14:00,777 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:14:00,777 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1118114 transitions.
[2022-12-14 14:14:00,779 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 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 14:14:00,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1118114 transitions.
[2022-12-14 14:14:02,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10634
[2022-12-14 14:14:02,792 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:14:02,794 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:14:02,794 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 14:14:02,794 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:14:02,794 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:14:02,795 INFO  L85        PathProgramCache]: Analyzing trace with hash -822664937, now seen corresponding path program 1 times
[2022-12-14 14:14:02,796 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:14:02,796 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181977722]
[2022-12-14 14:14:02,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:14:02,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:14:03,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:14:32,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 592 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-12-14 14:14:32,478 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:14:32,478 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181977722]
[2022-12-14 14:14:32,478 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181977722] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:14:32,479 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:14:32,479 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:14:32,479 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257052697]
[2022-12-14 14:14:32,479 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:14:32,483 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:14:32,483 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:14:32,487 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:14:32,487 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:14:32,489 INFO  L87              Difference]: Start difference. First operand 972483 states and 1118114 transitions. Second operand  has 3 states, 3 states have (on average 3528.6666666666665) internal successors, (10586), 2 states have internal predecessors, (10586), 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)