./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label53.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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/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 777b34a90701d0b2e3b99f6c0346a6970c96eba1bddafb1527e8d1dc2f81affe
--- 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 12:32:23,767 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 12:32:23,769 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 12:32:23,781 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 12:32:23,782 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 12:32:23,782 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 12:32:23,783 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 12:32:23,784 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 12:32:23,785 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 12:32:23,785 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 12:32:23,786 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 12:32:23,787 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 12:32:23,787 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 12:32:23,787 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 12:32:23,788 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 12:32:23,789 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 12:32:23,789 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 12:32:23,790 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 12:32:23,791 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 12:32:23,792 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 12:32:23,793 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 12:32:23,794 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 12:32:23,794 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 12:32:23,795 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 12:32:23,797 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 12:32:23,797 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 12:32:23,797 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 12:32:23,798 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 12:32:23,798 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 12:32:23,799 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 12:32:23,799 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 12:32:23,800 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 12:32:23,800 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 12:32:23,800 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 12:32:23,801 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 12:32:23,801 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 12:32:23,802 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 12:32:23,802 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 12:32:23,802 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 12:32:23,803 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 12:32:23,803 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 12:32:23,804 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 12:32:23,828 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 12:32:23,829 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 12:32:23,835 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 12:32:23,835 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 12:32:23,836 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 12:32:23,836 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 12:32:23,836 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 12:32:23,836 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 12:32:23,836 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 12:32:23,836 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 12:32:23,836 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 12:32:23,837 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 12:32:23,837 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 12:32:23,838 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 12:32:23,838 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 12:32:23,839 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 12:32:23,839 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 12:32:23,839 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 12:32:23,840 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 12:32:23,840 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 12:32:23,840 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 12:32:23,840 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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/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 -> 777b34a90701d0b2e3b99f6c0346a6970c96eba1bddafb1527e8d1dc2f81affe
[2022-12-14 12:32:24,000 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 12:32:24,018 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 12:32:24,020 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 12:32:24,021 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 12:32:24,022 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 12:32:24,023 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label53.c
[2022-12-14 12:32:26,589 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 12:32:27,616 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 12:32:27,617 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/sv-benchmarks/c/eca-rers2012/Problem07_label53.c
[2022-12-14 12:32:27,746 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/data/3fb94b4c8/285d1be70f7b4a188cac0aa966592922/FLAG968d723f5
[2022-12-14 12:32:28,166 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/data/3fb94b4c8/285d1be70f7b4a188cac0aa966592922
[2022-12-14 12:32:28,168 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 12:32:28,169 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 12:32:28,170 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 12:32:28,170 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 12:32:28,173 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 12:32:28,173 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:28" (1/1) ...
[2022-12-14 12:32:28,174 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260548c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:28, skipping insertion in model container
[2022-12-14 12:32:28,174 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:28" (1/1) ...
[2022-12-14 12:32:28,179 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 12:32:28,794 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 12:32:38,762 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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/sv-benchmarks/c/eca-rers2012/Problem07_label53.c[2776999,2777012]
[2022-12-14 12:32:38,810 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 12:32:38,818 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 12:32:44,814 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_a6945a3b-373e-4faa-bc5f-8711f81eecbc/sv-benchmarks/c/eca-rers2012/Problem07_label53.c[2776999,2777012]
[2022-12-14 12:32:44,816 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 12:32:45,525 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 12:32:45,526 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45 WrapperNode
[2022-12-14 12:32:45,526 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 12:32:45,526 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 12:32:45,526 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 12:32:45,527 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 12:32:45,531 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:45,863 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:47,246 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 12:32:47,247 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 12:32:47,247 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 12:32:47,248 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 12:32:47,248 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 12:32:47,256 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:47,256 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:47,569 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:47,569 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,209 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,360 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,533 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,595 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,910 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 12:32:48,911 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 12:32:48,912 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 12:32:48,912 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 12:32:48,913 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (1/1) ...
[2022-12-14 12:32:48,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 12:32:48,935 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 12:32:48,949 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 12:32:48,951 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6945a3b-373e-4faa-bc5f-8711f81eecbc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 12:32:48,979 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 12:32:48,979 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 12:32:48,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 12:32:48,979 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 12:32:49,094 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 12:32:49,096 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 12:33:20,521 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 12:33:21,245 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 12:33:21,245 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 12:33:21,253 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:33:21 BoogieIcfgContainer
[2022-12-14 12:33:21,253 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 12:33:21,255 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 12:33:21,255 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 12:33:21,257 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 12:33:21,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:32:28" (1/3) ...
[2022-12-14 12:33:21,258 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e90a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:33:21, skipping insertion in model container
[2022-12-14 12:33:21,258 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:45" (2/3) ...
[2022-12-14 12:33:21,258 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e90a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:33:21, skipping insertion in model container
[2022-12-14 12:33:21,258 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:33:21" (3/3) ...
[2022-12-14 12:33:21,259 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label53.c
[2022-12-14 12:33:21,272 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 12:33:21,273 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 12:33:21,395 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 12:33:21,400 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;@33e61f09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 12:33:21,400 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 12:33:21,423 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 12:33:21,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 12:33:21,884 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:33:21,887 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 12:33:21,888 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:33:21,892 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:33:21,895 INFO  L85        PathProgramCache]: Analyzing trace with hash 184885497, now seen corresponding path program 1 times
[2022-12-14 12:33:21,902 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:33:21,902 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250673082]
[2022-12-14 12:33:21,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:33:21,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:33:23,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:33:50,046 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 12:33:50,046 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:33:50,047 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250673082]
[2022-12-14 12:33:50,047 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250673082] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:33:50,047 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:33:50,048 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:33:50,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945190833]
[2022-12-14 12:33:50,050 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:33:50,059 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:33:50,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:33:50,086 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:33:50,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:33:50,105 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 12:34:17,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:34:17,894 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 12:34:17,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:34:17,899 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 12:34:17,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:34:17,971 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 12:34:17,972 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 12:34:17,984 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 12:34:17,987 INFO  L413           NwaCegarLoop]: 3616 mSDtfsCounter, 847 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 32039 mSolverCounterSat, 10539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 42578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10539 IncrementalHoareTripleChecker+Valid, 32039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time
[2022-12-14 12:34:17,987 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 3667 Invalid, 42578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10539 Valid, 32039 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time]
[2022-12-14 12:34:18,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 12:34:18,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 12:34:18,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.8203040173724212) internal successors, (36883), 20262 states have internal predecessors, (36883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:34:18,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36883 transitions.
[2022-12-14 12:34:18,404 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36883 transitions. Word has length 10085
[2022-12-14 12:34:18,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:34:18,415 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36883 transitions.
[2022-12-14 12:34:18,417 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 12:34:18,417 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36883 transitions.
[2022-12-14 12:34:18,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 12:34:18,977 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:34:18,980 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 12:34:18,980 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 12:34:18,981 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:34:18,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:34:18,985 INFO  L85        PathProgramCache]: Analyzing trace with hash 987460257, now seen corresponding path program 1 times
[2022-12-14 12:34:18,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:34:18,985 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300452657]
[2022-12-14 12:34:18,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:34:18,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:34:20,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:34:40,801 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 12:34:40,801 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:34:40,801 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300452657]
[2022-12-14 12:34:40,801 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300452657] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:34:40,802 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:34:40,802 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:34:40,802 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809472668]
[2022-12-14 12:34:40,803 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:34:40,809 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:34:40,809 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:34:40,816 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:34:40,816 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:34:40,819 INFO  L87              Difference]: Start difference. First operand 20263 states and 36883 transitions. Second operand  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:35:09,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:35:09,561 INFO  L93              Difference]: Finished difference Result 60785 states and 110646 transitions.
[2022-12-14 12:35:09,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:35:09,563 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 12:35:09,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:35:09,617 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 12:35:09,617 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 12:35:09,632 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 12:35:09,633 INFO  L413           NwaCegarLoop]: 4826 mSDtfsCounter, 13805 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28581 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 40339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time
[2022-12-14 12:35:09,633 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4875 Invalid, 40339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28581 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time]
[2022-12-14 12:35:09,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 12:35:10,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 12:35:10,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.6266719312965796) internal successors, (65916), 40522 states have internal predecessors, (65916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:35:10,122 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65916 transitions.
[2022-12-14 12:35:10,122 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65916 transitions. Word has length 10089
[2022-12-14 12:35:10,123 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:35:10,123 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65916 transitions.
[2022-12-14 12:35:10,125 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 12:35:10,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65916 transitions.
[2022-12-14 12:35:10,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2022-12-14 12:35:10,697 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:35:10,700 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 12:35:10,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 12:35:10,700 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:35:10,701 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:35:10,703 INFO  L85        PathProgramCache]: Analyzing trace with hash 1936512103, now seen corresponding path program 1 times
[2022-12-14 12:35:10,703 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:35:10,703 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305971116]
[2022-12-14 12:35:10,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:35:10,704 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:35:11,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:35:31,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 12:35:31,345 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:35:31,345 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305971116]
[2022-12-14 12:35:31,345 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305971116] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:35:31,345 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:35:31,346 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:35:31,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334286672]
[2022-12-14 12:35:31,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:35:31,352 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:35:31,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:35:31,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:35:31,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:35:31,359 INFO  L87              Difference]: Start difference. First operand 40523 states and 65916 transitions. Second operand  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:00,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:36:00,047 INFO  L93              Difference]: Finished difference Result 121565 states and 197745 transitions.
[2022-12-14 12:36:00,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:36:00,049 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10090
[2022-12-14 12:36:00,049 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:36:00,155 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 12:36:00,155 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 12:36:00,181 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 12:36:00,183 INFO  L413           NwaCegarLoop]: 4821 mSDtfsCounter, 13626 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28706 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13626 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 40383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2022-12-14 12:36:00,183 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13626 Valid, 4870 Invalid, 40383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28706 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time]
[2022-12-14 12:36:00,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 12:36:00,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 12:36:01,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.4809851681843982) internal successors, (120022), 81042 states have internal predecessors, (120022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:01,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 120022 transitions.
[2022-12-14 12:36:01,192 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 120022 transitions. Word has length 10090
[2022-12-14 12:36:01,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:36:01,195 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 120022 transitions.
[2022-12-14 12:36:01,197 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:01,197 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 120022 transitions.
[2022-12-14 12:36:01,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2022-12-14 12:36:01,826 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:36:01,828 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 12:36:01,829 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 12:36:01,829 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:36:01,829 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:36:01,831 INFO  L85        PathProgramCache]: Analyzing trace with hash 1097679690, now seen corresponding path program 1 times
[2022-12-14 12:36:01,831 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:36:01,832 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980331682]
[2022-12-14 12:36:01,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:36:01,832 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:36:02,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:36:22,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 12:36:22,465 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:36:22,465 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980331682]
[2022-12-14 12:36:22,466 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980331682] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:36:22,466 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:36:22,466 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:36:22,466 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951396604]
[2022-12-14 12:36:22,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:36:22,472 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:36:22,472 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:36:22,477 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:36:22,477 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:36:22,479 INFO  L87              Difference]: Start difference. First operand 81043 states and 120022 transitions. Second operand  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:53,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:36:53,411 INFO  L93              Difference]: Finished difference Result 243125 states and 360063 transitions.
[2022-12-14 12:36:53,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:36:53,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10096
[2022-12-14 12:36:53,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:36:53,551 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 12:36:53,551 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 12:36:53,582 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 12:36:53,583 INFO  L413           NwaCegarLoop]: 8615 mSDtfsCounter, 11010 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30887 mSolverCounterSat, 11008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11010 SdHoareTripleChecker+Valid, 8664 SdHoareTripleChecker+Invalid, 41895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11008 IncrementalHoareTripleChecker+Valid, 30887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 12:36:53,584 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11010 Valid, 8664 Invalid, 41895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11008 Valid, 30887 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 12:36:53,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 12:36:54,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 12:36:54,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3688996927481152) internal successors, (221874), 162082 states have internal predecessors, (221874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:55,059 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 221874 transitions.
[2022-12-14 12:36:55,059 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 221874 transitions. Word has length 10096
[2022-12-14 12:36:55,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:36:55,060 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 221874 transitions.
[2022-12-14 12:36:55,061 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:36:55,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 221874 transitions.
[2022-12-14 12:36:55,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10107
[2022-12-14 12:36:55,953 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:36:55,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 12:36:55,958 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 12:36:55,958 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:36:55,959 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:36:55,964 INFO  L85        PathProgramCache]: Analyzing trace with hash -10808769, now seen corresponding path program 1 times
[2022-12-14 12:36:55,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:36:55,964 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837989246]
[2022-12-14 12:36:55,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:36:55,965 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:36:57,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:37:27,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 12:37:27,182 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:37:27,182 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837989246]
[2022-12-14 12:37:27,182 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837989246] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:37:27,182 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:37:27,183 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:37:27,183 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573419280]
[2022-12-14 12:37:27,183 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:37:27,191 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:37:27,191 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:37:27,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:37:27,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:37:27,198 INFO  L87              Difference]: Start difference. First operand 162083 states and 221874 transitions. Second operand  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:37:56,466 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:37:56,467 INFO  L93              Difference]: Finished difference Result 405205 states and 545635 transitions.
[2022-12-14 12:37:56,467 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:37:56,468 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10106
[2022-12-14 12:37:56,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:37:56,760 INFO  L225             Difference]: With dead ends: 405205
[2022-12-14 12:37:56,761 INFO  L226             Difference]: Without dead ends: 243123
[2022-12-14 12:37:56,823 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 12:37:56,824 INFO  L413           NwaCegarLoop]: 9641 mSDtfsCounter, 10351 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29280 mSolverCounterSat, 7489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10351 SdHoareTripleChecker+Valid, 9690 SdHoareTripleChecker+Invalid, 36769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7489 IncrementalHoareTripleChecker+Valid, 29280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time
[2022-12-14 12:37:56,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10351 Valid, 9690 Invalid, 36769 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7489 Valid, 29280 Invalid, 0 Unknown, 0 Unchecked, 27.9s Time]
[2022-12-14 12:37:56,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243123 states.
[2022-12-14 12:37:58,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243123 to 243123.
[2022-12-14 12:37:58,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 243123 states, 243122 states have (on average 1.2878308009970303) internal successors, (313100), 243122 states have internal predecessors, (313100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:37:59,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 243123 states to 243123 states and 313100 transitions.
[2022-12-14 12:37:59,176 INFO  L78                 Accepts]: Start accepts. Automaton has 243123 states and 313100 transitions. Word has length 10106
[2022-12-14 12:37:59,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:37:59,177 INFO  L495      AbstractCegarLoop]: Abstraction has 243123 states and 313100 transitions.
[2022-12-14 12:37:59,178 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:37:59,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 243123 states and 313100 transitions.
[2022-12-14 12:38:00,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2022-12-14 12:38:00,181 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:38:00,183 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 12:38:00,183 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 12:38:00,183 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:38:00,184 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:38:00,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 186273815, now seen corresponding path program 1 times
[2022-12-14 12:38:00,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:38:00,187 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096244085]
[2022-12-14 12:38:00,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:38:00,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:38:01,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:38:23,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 12:38:23,346 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:38:23,346 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096244085]
[2022-12-14 12:38:23,346 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096244085] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:38:23,346 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:38:23,347 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:38:23,347 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61351111]
[2022-12-14 12:38:23,347 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:38:23,351 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:38:23,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:38:23,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:38:23,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:38:23,358 INFO  L87              Difference]: Start difference. First operand 243123 states and 313100 transitions. Second operand  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:38:56,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:38:56,658 INFO  L93              Difference]: Finished difference Result 729365 states and 939297 transitions.
[2022-12-14 12:38:56,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:38:56,660 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10122
[2022-12-14 12:38:56,660 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:38:57,253 INFO  L225             Difference]: With dead ends: 729365
[2022-12-14 12:38:57,254 INFO  L226             Difference]: Without dead ends: 486243
[2022-12-14 12:38:57,332 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 12:38:57,332 INFO  L413           NwaCegarLoop]: 5698 mSDtfsCounter, 13679 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27311 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13679 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time
[2022-12-14 12:38:57,333 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13679 Valid, 5747 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27311 Invalid, 0 Unknown, 0 Unchecked, 31.1s Time]
[2022-12-14 12:38:57,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 486243 states.
[2022-12-14 12:39:01,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 486243 to 486243.
[2022-12-14 12:39:01,397 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 486243 states, 486242 states have (on average 1.204540126110044) internal successors, (585698), 486242 states have internal predecessors, (585698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:39:02,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 486243 states to 486243 states and 585698 transitions.
[2022-12-14 12:39:02,077 INFO  L78                 Accepts]: Start accepts. Automaton has 486243 states and 585698 transitions. Word has length 10122
[2022-12-14 12:39:02,077 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:39:02,077 INFO  L495      AbstractCegarLoop]: Abstraction has 486243 states and 585698 transitions.
[2022-12-14 12:39:02,079 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:39:02,079 INFO  L276                IsEmpty]: Start isEmpty. Operand 486243 states and 585698 transitions.
[2022-12-14 12:39:03,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10226
[2022-12-14 12:39:03,191 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:39:03,193 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 12:39:03,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 12:39:03,193 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:39:03,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:39:03,195 INFO  L85        PathProgramCache]: Analyzing trace with hash -1025208115, now seen corresponding path program 1 times
[2022-12-14 12:39:03,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:39:03,195 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769738458]
[2022-12-14 12:39:03,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:39:03,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:39:04,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:39:23,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 12:39:23,699 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:39:23,699 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769738458]
[2022-12-14 12:39:23,699 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769738458] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:39:23,699 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:39:23,700 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:39:23,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464235365]
[2022-12-14 12:39:23,700 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:39:23,704 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:39:23,704 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:39:23,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:39:23,709 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:39:23,711 INFO  L87              Difference]: Start difference. First operand 486243 states and 585698 transitions. Second operand  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:39:58,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:39:58,183 INFO  L93              Difference]: Finished difference Result 1458725 states and 1757091 transitions.
[2022-12-14 12:39:58,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:39:58,185 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10225
[2022-12-14 12:39:58,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:39:59,370 INFO  L225             Difference]: With dead ends: 1458725
[2022-12-14 12:39:59,370 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 12:39:59,675 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 12:39:59,676 INFO  L413           NwaCegarLoop]: 7701 mSDtfsCounter, 11540 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31060 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11540 SdHoareTripleChecker+Valid, 7750 SdHoareTripleChecker+Invalid, 41561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time
[2022-12-14 12:39:59,676 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11540 Valid, 7750 Invalid, 41561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31060 Invalid, 0 Unknown, 0 Unchecked, 30.6s Time]
[2022-12-14 12:40:00,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 12:40:07,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 12:40:08,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1554907957165275) internal successors, (1123694), 972482 states have internal predecessors, (1123694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:40:09,979 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1123694 transitions.
[2022-12-14 12:40:09,979 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1123694 transitions. Word has length 10225
[2022-12-14 12:40:09,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:40:09,981 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1123694 transitions.
[2022-12-14 12:40:09,982 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:40:09,982 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1123694 transitions.
[2022-12-14 12:40:11,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10531
[2022-12-14 12:40:11,816 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:40:11,818 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 12:40:11,819 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 12:40:11,819 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:40:11,819 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:40:11,821 INFO  L85        PathProgramCache]: Analyzing trace with hash 1177054890, now seen corresponding path program 1 times
[2022-12-14 12:40:11,821 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:40:11,821 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669386827]
[2022-12-14 12:40:11,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:40:11,822 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:40:13,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:40:36,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 667 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2022-12-14 12:40:36,551 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:40:36,551 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669386827]
[2022-12-14 12:40:36,551 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669386827] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:40:36,551 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:40:36,552 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:40:36,552 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911893790]
[2022-12-14 12:40:36,552 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:40:36,556 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:40:36,556 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:40:36,561 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:40:36,561 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:40:36,563 INFO  L87              Difference]: Start difference. First operand 972483 states and 1123694 transitions. Second operand  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:41:09,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 12:41:09,678 INFO  L93              Difference]: Finished difference Result 2431205 states and 2793717 transitions.
[2022-12-14 12:41:09,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 12:41:09,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10530
[2022-12-14 12:41:09,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 12:41:11,551 INFO  L225             Difference]: With dead ends: 2431205
[2022-12-14 12:41:11,551 INFO  L226             Difference]: Without dead ends: 1458723
[2022-12-14 12:41:12,055 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 12:41:12,056 INFO  L413           NwaCegarLoop]: 5129 mSDtfsCounter, 10868 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29995 mSolverCounterSat, 10732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10868 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 40727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10732 IncrementalHoareTripleChecker+Valid, 29995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time
[2022-12-14 12:41:12,056 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10868 Valid, 5178 Invalid, 40727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10732 Valid, 29995 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time]
[2022-12-14 12:41:13,069 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1458723 states.
[2022-12-14 12:41:24,940 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458723 to 1458723.
[2022-12-14 12:41:25,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1458723 states, 1458722 states have (on average 1.1000286552201173) internal successors, (1604636), 1458722 states have internal predecessors, (1604636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:41:27,844 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1458723 states to 1458723 states and 1604636 transitions.
[2022-12-14 12:41:27,844 INFO  L78                 Accepts]: Start accepts. Automaton has 1458723 states and 1604636 transitions. Word has length 10530
[2022-12-14 12:41:27,845 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 12:41:27,846 INFO  L495      AbstractCegarLoop]: Abstraction has 1458723 states and 1604636 transitions.
[2022-12-14 12:41:27,847 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3458.0) internal successors, (10374), 2 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 12:41:27,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 1458723 states and 1604636 transitions.
[2022-12-14 12:41:30,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10532
[2022-12-14 12:41:30,148 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 12:41:30,150 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 12:41:30,150 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 12:41:30,150 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 12:41:30,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 12:41:30,151 INFO  L85        PathProgramCache]: Analyzing trace with hash -1788505579, now seen corresponding path program 1 times
[2022-12-14 12:41:30,152 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 12:41:30,152 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886947863]
[2022-12-14 12:41:30,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 12:41:30,153 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 12:41:31,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 12:42:00,450 INFO  L134       CoverageAnalysis]: Checked inductivity of 464 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-12-14 12:42:00,450 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 12:42:00,450 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886947863]
[2022-12-14 12:42:00,450 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886947863] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 12:42:00,450 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 12:42:00,451 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 12:42:00,451 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837766427]
[2022-12-14 12:42:00,451 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 12:42:00,455 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 12:42:00,455 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 12:42:00,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 12:42:00,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 12:42:00,462 INFO  L87              Difference]: Start difference. First operand 1458723 states and 1604636 transitions. Second operand  has 3 states, 3 states have (on average 3503.6666666666665) internal successors, (10511), 2 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)