./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label33.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/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_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/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_3eca35c5-e912-46f2-9663-8e3d9629e46b/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 4eafa18fa34bccb4f26fd21dc046253e9397c192d060ca07a38463108045fd1d
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-14 14:03:41,786 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 14:03:41,788 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 14:03:41,799 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 14:03:41,800 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 14:03:41,800 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 14:03:41,801 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 14:03:41,802 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 14:03:41,803 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 14:03:41,803 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 14:03:41,804 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 14:03:41,805 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 14:03:41,805 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 14:03:41,805 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 14:03:41,806 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 14:03:41,807 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 14:03:41,807 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 14:03:41,808 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 14:03:41,809 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 14:03:41,810 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 14:03:41,811 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 14:03:41,812 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 14:03:41,812 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 14:03:41,813 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 14:03:41,815 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 14:03:41,815 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 14:03:41,815 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 14:03:41,815 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 14:03:41,816 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 14:03:41,816 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 14:03:41,816 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 14:03:41,817 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 14:03:41,817 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 14:03:41,818 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 14:03:41,818 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 14:03:41,819 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 14:03:41,819 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 14:03:41,819 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 14:03:41,819 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 14:03:41,820 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 14:03:41,820 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 14:03:41,821 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 14:03:41,835 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 14:03:41,835 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 14:03:41,835 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 14:03:41,835 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 14:03:41,836 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 14:03:41,836 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 14:03:41,836 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 14:03:41,836 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 14:03:41,836 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 14:03:41,836 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 14:03:41,837 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 14:03:41,837 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 14:03:41,838 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 14:03:41,838 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 14:03:41,838 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 14:03:41,838 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 14:03:41,838 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 14:03:41,838 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 14:03:41,839 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 14:03:41,839 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:03:41,840 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 14:03:41,840 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 14:03:41,840 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_3eca35c5-e912-46f2-9663-8e3d9629e46b/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_3eca35c5-e912-46f2-9663-8e3d9629e46b/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 -> 4eafa18fa34bccb4f26fd21dc046253e9397c192d060ca07a38463108045fd1d
[2022-12-14 14:03:42,015 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 14:03:42,030 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 14:03:42,032 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 14:03:42,033 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 14:03:42,033 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 14:03:42,034 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label33.c
[2022-12-14 14:03:44,561 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 14:03:45,575 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 14:03:45,576 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/sv-benchmarks/c/eca-rers2012/Problem07_label33.c
[2022-12-14 14:03:45,699 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/data/2180858f3/e3b94dd5726a4338ae2422f6397ce22f/FLAGcd3bd9447
[2022-12-14 14:03:46,134 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/data/2180858f3/e3b94dd5726a4338ae2422f6397ce22f
[2022-12-14 14:03:46,136 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 14:03:46,137 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 14:03:46,138 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 14:03:46,138 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 14:03:46,142 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 14:03:46,142 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:03:46" (1/1) ...
[2022-12-14 14:03:46,143 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453c6128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:03:46, skipping insertion in model container
[2022-12-14 14:03:46,143 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:03:46" (1/1) ...
[2022-12-14 14:03:46,149 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 14:03:46,741 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 14:03:56,385 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_3eca35c5-e912-46f2-9663-8e3d9629e46b/sv-benchmarks/c/eca-rers2012/Problem07_label33.c[2771543,2771556]
[2022-12-14 14:03:56,436 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:03:56,444 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 14:04:02,192 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_3eca35c5-e912-46f2-9663-8e3d9629e46b/sv-benchmarks/c/eca-rers2012/Problem07_label33.c[2771543,2771556]
[2022-12-14 14:04:02,211 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:04:02,818 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 14:04:02,818 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02 WrapperNode
[2022-12-14 14:04:02,818 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 14:04:02,819 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 14:04:02,819 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 14:04:02,819 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 14:04:02,824 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:03,117 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:04,260 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 14:04:04,260 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 14:04:04,261 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 14:04:04,261 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 14:04:04,261 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 14:04:04,269 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:04,270 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:04,520 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:04,520 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,128 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,220 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,375 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,428 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,714 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 14:04:05,715 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 14:04:05,715 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 14:04:05,715 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 14:04:05,716 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (1/1) ...
[2022-12-14 14:04:05,721 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:04:05,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 14:04:05,740 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 14:04:05,742 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eca35c5-e912-46f2-9663-8e3d9629e46b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 14:04:05,766 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 14:04:05,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 14:04:05,766 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 14:04:05,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 14:04:05,865 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 14:04:05,867 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 14:04:36,378 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 14:04:37,194 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 14:04:37,194 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 14:04:37,202 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:37 BoogieIcfgContainer
[2022-12-14 14:04:37,202 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 14:04:37,203 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 14:04:37,203 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 14:04:37,206 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 14:04:37,206 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:03:46" (1/3) ...
[2022-12-14 14:04:37,206 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23320c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:37, skipping insertion in model container
[2022-12-14 14:04:37,206 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:02" (2/3) ...
[2022-12-14 14:04:37,206 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23320c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:37, skipping insertion in model container
[2022-12-14 14:04:37,206 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:37" (3/3) ...
[2022-12-14 14:04:37,207 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label33.c
[2022-12-14 14:04:37,220 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 14:04:37,220 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 14:04:37,346 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 14:04:37,352 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;@16d69bf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 14:04:37,352 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 14:04:37,376 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:04:37,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 14:04:37,860 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:04:37,864 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:04:37,866 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:04:37,871 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:04:37,874 INFO  L85        PathProgramCache]: Analyzing trace with hash 184877305, now seen corresponding path program 1 times
[2022-12-14 14:04:37,882 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:04:37,882 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359250543]
[2022-12-14 14:04:37,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:04:37,885 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:04:39,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:05:09,784 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:05:09,785 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:05:09,785 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359250543]
[2022-12-14 14:05:09,785 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359250543] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:05:09,786 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:05:09,786 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:05:09,788 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152464498]
[2022-12-14 14:05:09,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:05:09,797 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:05:09,797 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:05:09,821 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:05:09,821 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:05:09,848 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:05:38,402 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:05:38,402 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 14:05:38,403 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:05:38,407 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085
[2022-12-14 14:05:38,421 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:05:38,517 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 14:05:38,517 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 14:05:38,528 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:05:38,530 INFO  L413           NwaCegarLoop]: 3615 mSDtfsCounter, 847 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32041 mSolverCounterSat, 10539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 42580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10539 IncrementalHoareTripleChecker+Valid, 32041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:05:38,531 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 3665 Invalid, 42580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10539 Valid, 32041 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time]
[2022-12-14 14:05:38,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 14:05:38,911 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 14:05:38,950 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 14:05:38,997 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36883 transitions.
[2022-12-14 14:05:38,998 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36883 transitions. Word has length 10085
[2022-12-14 14:05:39,014 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:05:39,014 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36883 transitions.
[2022-12-14 14:05:39,017 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:05:39,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36883 transitions.
[2022-12-14 14:05:39,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 14:05:39,562 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:05:39,565 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:05:39,565 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 14:05:39,565 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:05:39,565 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:05:39,568 INFO  L85        PathProgramCache]: Analyzing trace with hash 987452065, now seen corresponding path program 1 times
[2022-12-14 14:05:39,569 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:05:39,569 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503890849]
[2022-12-14 14:05:39,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:05:39,570 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:05:40,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:06:01,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:06:01,396 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:06:01,396 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503890849]
[2022-12-14 14:06:01,397 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503890849] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:06:01,397 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:06:01,397 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:06:01,398 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802361146]
[2022-12-14 14:06:01,398 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:06:01,405 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:06:01,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:06:01,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:06:01,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:06:01,414 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 14:06:29,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:06:29,093 INFO  L93              Difference]: Finished difference Result 60785 states and 110646 transitions.
[2022-12-14 14:06:29,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:06:29,095 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10089
[2022-12-14 14:06:29,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:06:29,148 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 14:06:29,148 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 14:06:29,163 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:06:29,164 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time
[2022-12-14 14:06:29,164 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4873 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time]
[2022-12-14 14:06:29,190 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 14:06:29,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 14:06:29,546 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 14:06:29,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65916 transitions.
[2022-12-14 14:06:29,597 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65916 transitions. Word has length 10089
[2022-12-14 14:06:29,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:06:29,598 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65916 transitions.
[2022-12-14 14:06:29,599 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:06:29,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65916 transitions.
[2022-12-14 14:06:30,190 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2022-12-14 14:06:30,190 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:06:30,193 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 14:06:30,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 14:06:30,194 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:06:30,194 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:06:30,196 INFO  L85        PathProgramCache]: Analyzing trace with hash 1936503911, now seen corresponding path program 1 times
[2022-12-14 14:06:30,196 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:06:30,196 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190722919]
[2022-12-14 14:06:30,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:06:30,197 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:06:31,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:06:50,739 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 14:06:50,740 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:06:50,740 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190722919]
[2022-12-14 14:06:50,740 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190722919] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:06:50,740 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:06:50,741 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:06:50,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494051398]
[2022-12-14 14:06:50,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:06:50,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:06:50,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:06:50,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:06:50,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:06:50,752 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 14:07:20,886 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:07:20,887 INFO  L93              Difference]: Finished difference Result 121565 states and 197745 transitions.
[2022-12-14 14:07:20,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:07:20,888 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 14:07:20,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:07:20,954 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 14:07:20,954 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 14:07:20,975 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:07:20,976 INFO  L413           NwaCegarLoop]: 4820 mSDtfsCounter, 13626 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13626 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time
[2022-12-14 14:07:20,976 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13626 Valid, 4868 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time]
[2022-12-14 14:07:21,021 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 14:07:21,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 14:07:21,638 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 14:07:21,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 120022 transitions.
[2022-12-14 14:07:21,731 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 120022 transitions. Word has length 10090
[2022-12-14 14:07:21,731 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:07:21,731 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 120022 transitions.
[2022-12-14 14:07:21,733 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 14:07:21,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 120022 transitions.
[2022-12-14 14:07:22,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2022-12-14 14:07:22,424 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:07:22,427 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 14:07:22,427 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 14:07:22,427 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:07:22,427 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:07:22,429 INFO  L85        PathProgramCache]: Analyzing trace with hash 1097671498, now seen corresponding path program 1 times
[2022-12-14 14:07:22,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:07:22,429 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392564261]
[2022-12-14 14:07:22,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:07:22,430 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:07:23,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:07:42,645 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 14:07:42,646 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:07:42,646 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392564261]
[2022-12-14 14:07:42,646 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392564261] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:07:42,646 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:07:42,647 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:07:42,647 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596476137]
[2022-12-14 14:07:42,647 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:07:42,652 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:07:42,652 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:07:42,657 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:07:42,657 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:07:42,660 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 14:08:11,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:08:11,579 INFO  L93              Difference]: Finished difference Result 243125 states and 360063 transitions.
[2022-12-14 14:08:11,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:08:11,581 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 14:08:11,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:08:11,733 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 14:08:11,733 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 14:08:11,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:08:11,765 INFO  L413           NwaCegarLoop]: 8615 mSDtfsCounter, 11008 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30889 mSolverCounterSat, 11008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11008 SdHoareTripleChecker+Valid, 8664 SdHoareTripleChecker+Invalid, 41897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11008 IncrementalHoareTripleChecker+Valid, 30889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:08:11,765 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11008 Valid, 8664 Invalid, 41897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11008 Valid, 30889 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time]
[2022-12-14 14:08:11,847 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 14:08:12,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 14:08:13,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3688750138818622) internal successors, (221870), 162082 states have internal predecessors, (221870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:08:13,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 221870 transitions.
[2022-12-14 14:08:13,259 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 221870 transitions. Word has length 10096
[2022-12-14 14:08:13,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:08:13,260 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 221870 transitions.
[2022-12-14 14:08:13,261 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 14:08:13,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 221870 transitions.
[2022-12-14 14:08:14,194 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2022-12-14 14:08:14,194 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:08:14,197 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:08:14,197 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 14:08:14,197 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:08:14,198 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:08:14,200 INFO  L85        PathProgramCache]: Analyzing trace with hash 186265623, now seen corresponding path program 1 times
[2022-12-14 14:08:14,200 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:08:14,200 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113085625]
[2022-12-14 14:08:14,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:08:14,201 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:08:15,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:08:38,193 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 14:08:38,194 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:08:38,194 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113085625]
[2022-12-14 14:08:38,194 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113085625] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:08:38,194 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:08:38,195 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:08:38,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242973632]
[2022-12-14 14:08:38,196 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:08:38,203 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:08:38,203 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:08:38,211 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:08:38,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:08:38,213 INFO  L87              Difference]: Start difference. First operand 162083 states and 221870 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 14:09:10,795 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:09:10,795 INFO  L93              Difference]: Finished difference Result 486245 states and 665607 transitions.
[2022-12-14 14:09:10,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:09:10,797 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 14:09:10,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:09:11,223 INFO  L225             Difference]: With dead ends: 486245
[2022-12-14 14:09:11,223 INFO  L226             Difference]: Without dead ends: 324163
[2022-12-14 14:09:11,308 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:09:11,310 INFO  L413           NwaCegarLoop]: 5815 mSDtfsCounter, 13588 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27342 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13588 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 40372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:09:11,310 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13588 Valid, 5863 Invalid, 40372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27342 Invalid, 0 Unknown, 0 Unchecked, 31.0s Time]
[2022-12-14 14:09:11,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324163 states.
[2022-12-14 14:09:14,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324163 to 324163.
[2022-12-14 14:09:14,241 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 324163 states, 324162 states have (on average 1.263448522652254) internal successors, (409562), 324162 states have internal predecessors, (409562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:09:14,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324163 states to 324163 states and 409562 transitions.
[2022-12-14 14:09:14,595 INFO  L78                 Accepts]: Start accepts. Automaton has 324163 states and 409562 transitions. Word has length 10122
[2022-12-14 14:09:14,596 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:09:14,596 INFO  L495      AbstractCegarLoop]: Abstraction has 324163 states and 409562 transitions.
[2022-12-14 14:09:14,597 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 14:09:14,597 INFO  L276                IsEmpty]: Start isEmpty. Operand 324163 states and 409562 transitions.
[2022-12-14 14:09:15,817 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10227
[2022-12-14 14:09:15,817 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:09:15,820 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 14:09:15,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 14:09:15,820 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:09:15,820 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:09:15,822 INFO  L85        PathProgramCache]: Analyzing trace with hash -1541862473, now seen corresponding path program 1 times
[2022-12-14 14:09:15,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:09:15,822 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960166463]
[2022-12-14 14:09:15,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:09:15,823 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:09:17,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:09:37,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 183 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2022-12-14 14:09:37,099 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:09:37,099 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960166463]
[2022-12-14 14:09:37,099 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960166463] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:09:37,099 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:09:37,102 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:09:37,102 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502478873]
[2022-12-14 14:09:37,102 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:09:37,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:09:37,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:09:37,123 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:09:37,123 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:09:37,125 INFO  L87              Difference]: Start difference. First operand 324163 states and 409562 transitions. Second operand  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:10:09,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:10:09,782 INFO  L93              Difference]: Finished difference Result 972485 states and 1228683 transitions.
[2022-12-14 14:10:09,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:10:09,784 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 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 10226
[2022-12-14 14:10:09,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:10:10,556 INFO  L225             Difference]: With dead ends: 972485
[2022-12-14 14:10:10,556 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:10:10,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:10:10,696 INFO  L413           NwaCegarLoop]: 7511 mSDtfsCounter, 11541 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30330 mSolverCounterSat, 11011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11541 SdHoareTripleChecker+Valid, 7559 SdHoareTripleChecker+Invalid, 41341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11011 IncrementalHoareTripleChecker+Valid, 30330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time
[2022-12-14 14:10:10,697 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11541 Valid, 7559 Invalid, 41341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11011 Valid, 30330 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time]
[2022-12-14 14:10:11,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:10:16,163 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:10:16,388 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1970378916649442) internal successors, (776066), 648322 states have internal predecessors, (776066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:10:17,430 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 776066 transitions.
[2022-12-14 14:10:17,430 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 776066 transitions. Word has length 10226
[2022-12-14 14:10:17,430 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:10:17,430 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 776066 transitions.
[2022-12-14 14:10:17,432 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:10:17,432 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 776066 transitions.
[2022-12-14 14:10:18,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10298
[2022-12-14 14:10:18,832 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:10:18,834 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2022-12-14 14:10:18,834 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 14:10:18,834 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:10:18,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:10:18,835 INFO  L85        PathProgramCache]: Analyzing trace with hash -1330833234, now seen corresponding path program 1 times
[2022-12-14 14:10:18,835 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:10:18,836 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143206626]
[2022-12-14 14:10:18,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:10:18,836 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:10:20,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:10:51,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 299 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2022-12-14 14:10:51,949 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:10:51,949 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143206626]
[2022-12-14 14:10:51,950 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143206626] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:10:51,950 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:10:51,951 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:10:51,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310974168]
[2022-12-14 14:10:51,951 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:10:51,954 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:10:51,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:10:51,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:10:51,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:10:51,962 INFO  L87              Difference]: Start difference. First operand 648323 states and 776066 transitions. Second operand  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:11:20,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:11:20,720 INFO  L93              Difference]: Finished difference Result 1296645 states and 1552131 transitions.
[2022-12-14 14:11:20,720 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:11:20,722 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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 10297
[2022-12-14 14:11:20,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:11:21,476 INFO  L225             Difference]: With dead ends: 1296645
[2022-12-14 14:11:21,476 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:11:21,677 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:11:21,678 INFO  L413           NwaCegarLoop]: 8835 mSDtfsCounter, 10702 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28831 mSolverCounterSat, 4833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10702 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 33664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4833 IncrementalHoareTripleChecker+Valid, 28831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time
[2022-12-14 14:11:21,678 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10702 Valid, 8883 Invalid, 33664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4833 Valid, 28831 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time]
[2022-12-14 14:11:22,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:11:27,371 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:11:27,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1962975188255218) internal successors, (775586), 648322 states have internal predecessors, (775586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:11:28,809 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 775586 transitions.
[2022-12-14 14:11:28,809 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 775586 transitions. Word has length 10297
[2022-12-14 14:11:28,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:11:28,810 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 775586 transitions.
[2022-12-14 14:11:28,811 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:11:28,811 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 775586 transitions.
[2022-12-14 14:11:30,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10417
[2022-12-14 14:11:30,303 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:11:30,305 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1]
[2022-12-14 14:11:30,305 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 14:11:30,305 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:11:30,305 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:11:30,306 INFO  L85        PathProgramCache]: Analyzing trace with hash 1057939552, now seen corresponding path program 1 times
[2022-12-14 14:11:30,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:11:30,306 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978732581]
[2022-12-14 14:11:30,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:11:30,307 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:11:31,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:11:51,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 553 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2022-12-14 14:11:51,799 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:11:51,799 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978732581]
[2022-12-14 14:11:51,799 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978732581] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:11:51,799 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:11:51,800 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:11:51,800 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748164373]
[2022-12-14 14:11:51,800 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:11:51,806 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:11:51,806 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:11:51,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:11:51,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:11:51,812 INFO  L87              Difference]: Start difference. First operand 648323 states and 775586 transitions. Second operand  has 3 states, 3 states have (on average 3409.3333333333335) internal successors, (10228), 2 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:12:28,932 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:12:28,933 INFO  L93              Difference]: Finished difference Result 1944965 states and 2326755 transitions.
[2022-12-14 14:12:28,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:12:28,934 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3409.3333333333335) internal successors, (10228), 2 states have internal predecessors, (10228), 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 10416
[2022-12-14 14:12:28,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:12:30,511 INFO  L225             Difference]: With dead ends: 1944965
[2022-12-14 14:12:30,511 INFO  L226             Difference]: Without dead ends: 1296643
[2022-12-14 14:12:30,762 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:12:30,763 INFO  L413           NwaCegarLoop]: 6770 mSDtfsCounter, 12102 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30694 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12102 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 41195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time
[2022-12-14 14:12:30,763 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12102 Valid, 6818 Invalid, 41195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30694 Invalid, 0 Unknown, 0 Unchecked, 31.9s Time]
[2022-12-14 14:12:31,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1296643 states.
[2022-12-14 14:12:42,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296643 to 1286513.
[2022-12-14 14:12:42,808 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1286513 states, 1286512 states have (on average 1.15021702090614) internal successors, (1479768), 1286512 states have internal predecessors, (1479768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:12:44,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1286513 states to 1286513 states and 1479768 transitions.
[2022-12-14 14:12:44,715 INFO  L78                 Accepts]: Start accepts. Automaton has 1286513 states and 1479768 transitions. Word has length 10416
[2022-12-14 14:12:44,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:12:44,716 INFO  L495      AbstractCegarLoop]: Abstraction has 1286513 states and 1479768 transitions.
[2022-12-14 14:12:44,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3409.3333333333335) internal successors, (10228), 2 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:12:44,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 1286513 states and 1479768 transitions.
[2022-12-14 14:12:46,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10659
[2022-12-14 14:12:46,887 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:12:46,889 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 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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[2022-12-14 14:12:46,889 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 14:12:46,889 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:12:46,890 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:12:46,891 INFO  L85        PathProgramCache]: Analyzing trace with hash -1947449337, now seen corresponding path program 1 times
[2022-12-14 14:12:46,891 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:12:46,891 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970362775]
[2022-12-14 14:12:46,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:12:46,892 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:12:48,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:13:12,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 1180 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked.
[2022-12-14 14:13:12,748 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:13:12,749 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970362775]
[2022-12-14 14:13:12,749 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970362775] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:13:12,749 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:13:12,749 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:13:12,750 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25872581]
[2022-12-14 14:13:12,750 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:13:12,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:13:12,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:13:12,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:13:12,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:13:12,759 INFO  L87              Difference]: Start difference. First operand 1286513 states and 1479768 transitions. Second operand  has 3 states, 3 states have (on average 3458.3333333333335) internal successors, (10375), 2 states have internal predecessors, (10375), 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)