./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/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_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/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_081156e1-6ed0-43f0-9387-812bd1d87144/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 4e59a15da4f04434f770517ae43c99b2723b189ac06ba438a80c7e04940e931c
--- 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 13:30:49,782 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 13:30:49,784 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 13:30:49,796 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 13:30:49,796 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 13:30:49,797 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 13:30:49,797 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 13:30:49,799 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 13:30:49,800 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 13:30:49,800 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 13:30:49,801 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 13:30:49,802 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 13:30:49,802 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 13:30:49,802 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 13:30:49,803 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 13:30:49,804 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 13:30:49,804 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 13:30:49,805 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 13:30:49,806 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 13:30:49,807 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 13:30:49,808 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 13:30:49,809 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 13:30:49,810 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 13:30:49,811 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 13:30:49,813 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 13:30:49,813 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 13:30:49,813 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 13:30:49,814 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 13:30:49,814 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 13:30:49,815 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 13:30:49,815 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 13:30:49,815 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 13:30:49,816 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 13:30:49,816 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 13:30:49,817 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 13:30:49,817 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 13:30:49,817 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 13:30:49,818 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 13:30:49,818 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 13:30:49,818 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 13:30:49,819 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 13:30:49,819 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 13:30:49,833 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 13:30:49,833 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 13:30:49,834 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 13:30:49,834 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 13:30:49,834 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 13:30:49,834 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 13:30:49,834 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 13:30:49,835 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 13:30:49,835 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 13:30:49,836 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 13:30:49,836 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 13:30:49,836 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 13:30:49,837 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 13:30:49,837 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 13:30:49,838 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 13:30:49,838 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 13:30:49,839 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 13:30:49,839 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 13:30:49,840 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_081156e1-6ed0-43f0-9387-812bd1d87144/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_081156e1-6ed0-43f0-9387-812bd1d87144/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 -> 4e59a15da4f04434f770517ae43c99b2723b189ac06ba438a80c7e04940e931c
[2022-12-14 13:30:50,034 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 13:30:50,054 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 13:30:50,056 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 13:30:50,057 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 13:30:50,057 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 13:30:50,058 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c
[2022-12-14 13:30:52,704 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 13:30:53,744 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 13:30:53,744 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/sv-benchmarks/c/eca-rers2012/Problem07_label45.c
[2022-12-14 13:30:53,860 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/data/348728d19/7d12292c854a46d29d5dbe78b55126cc/FLAG822d765f1
[2022-12-14 13:30:53,871 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/data/348728d19/7d12292c854a46d29d5dbe78b55126cc
[2022-12-14 13:30:53,873 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 13:30:53,875 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 13:30:53,876 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 13:30:53,876 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 13:30:53,879 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 13:30:53,879 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:30:53" (1/1) ...
[2022-12-14 13:30:53,880 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcee11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:30:53, skipping insertion in model container
[2022-12-14 13:30:53,881 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:30:53" (1/1) ...
[2022-12-14 13:30:53,886 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 13:30:54,532 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 13:31:04,191 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_081156e1-6ed0-43f0-9387-812bd1d87144/sv-benchmarks/c/eca-rers2012/Problem07_label45.c[2773246,2773259]
[2022-12-14 13:31:04,241 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 13:31:04,248 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 13:31:10,189 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_081156e1-6ed0-43f0-9387-812bd1d87144/sv-benchmarks/c/eca-rers2012/Problem07_label45.c[2773246,2773259]
[2022-12-14 13:31:10,194 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 13:31:10,759 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 13:31:10,759 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10 WrapperNode
[2022-12-14 13:31:10,759 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 13:31:10,760 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 13:31:10,760 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 13:31:10,760 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 13:31:10,764 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:11,094 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:12,265 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 13:31:12,266 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 13:31:12,266 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 13:31:12,266 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 13:31:12,267 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 13:31:12,274 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:12,275 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:12,510 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:12,510 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,092 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,193 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,276 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,328 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,667 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 13:31:13,668 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 13:31:13,668 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 13:31:13,668 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 13:31:13,669 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (1/1) ...
[2022-12-14 13:31:13,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 13:31:13,680 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 13:31:13,690 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 13:31:13,691 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081156e1-6ed0-43f0-9387-812bd1d87144/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 13:31:13,724 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 13:31:13,724 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 13:31:13,724 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 13:31:13,724 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 13:31:13,819 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 13:31:13,821 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 13:31:44,677 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 13:31:45,338 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 13:31:45,338 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 13:31:45,346 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:31:45 BoogieIcfgContainer
[2022-12-14 13:31:45,346 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 13:31:45,347 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 13:31:45,347 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 13:31:45,349 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 13:31:45,350 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:30:53" (1/3) ...
[2022-12-14 13:31:45,350 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e6f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:31:45, skipping insertion in model container
[2022-12-14 13:31:45,350 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:31:10" (2/3) ...
[2022-12-14 13:31:45,350 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e6f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:31:45, skipping insertion in model container
[2022-12-14 13:31:45,350 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:31:45" (3/3) ...
[2022-12-14 13:31:45,351 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label45.c
[2022-12-14 13:31:45,364 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 13:31:45,365 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 13:31:45,496 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 13:31:45,501 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;@149f837f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 13:31:45,501 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 13:31:45,525 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 13:31:46,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 13:31:46,203 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:31:46,207 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 13:31:46,208 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:31:46,218 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:31:46,221 INFO  L85        PathProgramCache]: Analyzing trace with hash 184879865, now seen corresponding path program 1 times
[2022-12-14 13:31:46,228 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:31:46,228 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348482167]
[2022-12-14 13:31:46,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:31:46,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:31:48,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:32:33,167 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 13:32:33,167 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:32:33,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348482167]
[2022-12-14 13:32:33,168 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348482167] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:32:33,168 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:32:33,169 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 13:32:33,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242695530]
[2022-12-14 13:32:33,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:32:33,182 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 13:32:33,182 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:32:33,217 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 13:32:33,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-14 13:32:33,244 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:33:21,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:33:21,896 INFO  L93              Difference]: Finished difference Result 40533 states and 80861 transitions.
[2022-12-14 13:33:21,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 13:33:21,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085
[2022-12-14 13:33:21,914 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:33:21,987 INFO  L225             Difference]: With dead ends: 40533
[2022-12-14 13:33:21,987 INFO  L226             Difference]: Without dead ends: 30393
[2022-12-14 13:33:21,998 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-14 13:33:22,001 INFO  L413           NwaCegarLoop]: 5085 mSDtfsCounter, 22155 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 51680 mSolverCounterSat, 18959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22155 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 70639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18959 IncrementalHoareTripleChecker+Valid, 51680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.7s IncrementalHoareTripleChecker+Time
[2022-12-14 13:33:22,001 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22155 Valid, 5196 Invalid, 70639 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18959 Valid, 51680 Invalid, 0 Unknown, 0 Unchecked, 47.7s Time]
[2022-12-14 13:33:22,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30393 states.
[2022-12-14 13:33:22,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30393 to 30393.
[2022-12-14 13:33:22,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30393 states, 30392 states have (on average 1.4995064490655436) internal successors, (45573), 30392 states have internal predecessors, (45573), 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 13:33:22,451 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30393 states to 30393 states and 45573 transitions.
[2022-12-14 13:33:22,452 INFO  L78                 Accepts]: Start accepts. Automaton has 30393 states and 45573 transitions. Word has length 10085
[2022-12-14 13:33:22,462 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:33:22,462 INFO  L495      AbstractCegarLoop]: Abstraction has 30393 states and 45573 transitions.
[2022-12-14 13:33:22,465 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:33:22,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 30393 states and 45573 transitions.
[2022-12-14 13:33:23,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12985
[2022-12-14 13:33:23,401 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:33:23,405 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:33:23,406 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 13:33:23,406 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:33:23,406 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:33:23,408 INFO  L85        PathProgramCache]: Analyzing trace with hash 147762072, now seen corresponding path program 1 times
[2022-12-14 13:33:23,408 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:33:23,408 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648642506]
[2022-12-14 13:33:23,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:33:23,409 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:33:24,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:33:59,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-12-14 13:33:59,674 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:33:59,675 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648642506]
[2022-12-14 13:33:59,675 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648642506] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:33:59,675 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:33:59,676 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:33:59,676 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306880507]
[2022-12-14 13:33:59,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:33:59,694 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:33:59,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:33:59,707 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:33:59,707 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:33:59,711 INFO  L87              Difference]: Start difference. First operand 30393 states and 45573 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:34:29,007 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:34:29,007 INFO  L93              Difference]: Finished difference Result 70915 states and 116444 transitions.
[2022-12-14 13:34:29,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:34:29,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12984
[2022-12-14 13:34:29,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:34:29,104 INFO  L225             Difference]: With dead ends: 70915
[2022-12-14 13:34:29,105 INFO  L226             Difference]: Without dead ends: 50653
[2022-12-14 13:34:29,126 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 13:34:29,127 INFO  L413           NwaCegarLoop]: 4814 mSDtfsCounter, 10912 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 4862 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time
[2022-12-14 13:34:29,127 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10912 Valid, 4862 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time]
[2022-12-14 13:34:29,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50653 states.
[2022-12-14 13:34:29,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50653 to 50653.
[2022-12-14 13:34:29,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50653 states, 50652 states have (on average 1.4573955618731738) internal successors, (73820), 50652 states have internal predecessors, (73820), 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 13:34:29,915 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50653 states to 50653 states and 73820 transitions.
[2022-12-14 13:34:29,915 INFO  L78                 Accepts]: Start accepts. Automaton has 50653 states and 73820 transitions. Word has length 12984
[2022-12-14 13:34:29,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:34:29,918 INFO  L495      AbstractCegarLoop]: Abstraction has 50653 states and 73820 transitions.
[2022-12-14 13:34:29,921 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:34:29,921 INFO  L276                IsEmpty]: Start isEmpty. Operand 50653 states and 73820 transitions.
[2022-12-14 13:34:30,895 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12986
[2022-12-14 13:34:30,895 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:34:30,900 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 13:34:30,901 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 13:34:30,901 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:34:30,901 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:34:30,903 INFO  L85        PathProgramCache]: Analyzing trace with hash 1675841104, now seen corresponding path program 1 times
[2022-12-14 13:34:30,903 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:34:30,903 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638940592]
[2022-12-14 13:34:30,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:34:30,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:34:32,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:35:21,969 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:35:21,969 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:35:21,969 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638940592]
[2022-12-14 13:35:21,969 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638940592] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:35:21,969 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:35:21,970 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 13:35:21,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333611042]
[2022-12-14 13:35:21,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:35:21,976 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:35:21,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:35:21,981 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:35:21,981 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:35:21,984 INFO  L87              Difference]: Start difference. First operand 50653 states and 73820 transitions. Second operand  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 13:35:47,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:35:47,640 INFO  L93              Difference]: Finished difference Result 111435 states and 165527 transitions.
[2022-12-14 13:35:47,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:35:47,641 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 12985
[2022-12-14 13:35:47,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:35:47,695 INFO  L225             Difference]: With dead ends: 111435
[2022-12-14 13:35:47,695 INFO  L226             Difference]: Without dead ends: 70913
[2022-12-14 13:35:47,711 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:35:47,712 INFO  L413           NwaCegarLoop]: 18144 mSDtfsCounter, 10150 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33483 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10150 SdHoareTripleChecker+Valid, 18193 SdHoareTripleChecker+Invalid, 37236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time
[2022-12-14 13:35:47,712 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10150 Valid, 18193 Invalid, 37236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33483 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time]
[2022-12-14 13:35:47,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70913 states.
[2022-12-14 13:35:48,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70913 to 70913.
[2022-12-14 13:35:48,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70913 states, 70912 states have (on average 1.412595893501805) internal successors, (100170), 70912 states have internal predecessors, (100170), 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 13:35:48,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70913 states to 70913 states and 100170 transitions.
[2022-12-14 13:35:48,301 INFO  L78                 Accepts]: Start accepts. Automaton has 70913 states and 100170 transitions. Word has length 12985
[2022-12-14 13:35:48,303 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:35:48,303 INFO  L495      AbstractCegarLoop]: Abstraction has 70913 states and 100170 transitions.
[2022-12-14 13:35:48,305 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 13:35:48,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 70913 states and 100170 transitions.
[2022-12-14 13:35:49,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12992
[2022-12-14 13:35:49,317 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:35:49,320 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:35:49,321 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 13:35:49,321 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:35:49,321 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:35:49,323 INFO  L85        PathProgramCache]: Analyzing trace with hash -1420929855, now seen corresponding path program 1 times
[2022-12-14 13:35:49,323 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:35:49,323 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155374564]
[2022-12-14 13:35:49,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:35:49,324 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:35:50,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:36:27,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-12-14 13:36:27,164 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:36:27,164 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155374564]
[2022-12-14 13:36:27,164 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155374564] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:36:27,164 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:36:27,165 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:36:27,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838789033]
[2022-12-14 13:36:27,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:36:27,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:36:27,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:36:27,186 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:36:27,186 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:36:27,190 INFO  L87              Difference]: Start difference. First operand 70913 states and 100170 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:36:57,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:36:57,516 INFO  L93              Difference]: Finished difference Result 192475 states and 280235 transitions.
[2022-12-14 13:36:57,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:36:57,518 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12991
[2022-12-14 13:36:57,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:36:57,636 INFO  L225             Difference]: With dead ends: 192475
[2022-12-14 13:36:57,636 INFO  L226             Difference]: Without dead ends: 131693
[2022-12-14 13:36:57,662 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 13:36:57,663 INFO  L413           NwaCegarLoop]: 6715 mSDtfsCounter, 10069 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27589 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10069 SdHoareTripleChecker+Valid, 6763 SdHoareTripleChecker+Invalid, 40619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time
[2022-12-14 13:36:57,663 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10069 Valid, 6763 Invalid, 40619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27589 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time]
[2022-12-14 13:36:57,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131693 states.
[2022-12-14 13:36:58,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131693 to 131693.
[2022-12-14 13:36:58,772 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 131693 states, 131692 states have (on average 1.3217355648027216) internal successors, (174062), 131692 states have internal predecessors, (174062), 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 13:36:58,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131693 states to 131693 states and 174062 transitions.
[2022-12-14 13:36:58,906 INFO  L78                 Accepts]: Start accepts. Automaton has 131693 states and 174062 transitions. Word has length 12991
[2022-12-14 13:36:58,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:36:58,908 INFO  L495      AbstractCegarLoop]: Abstraction has 131693 states and 174062 transitions.
[2022-12-14 13:36:58,910 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:36:58,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 131693 states and 174062 transitions.
[2022-12-14 13:37:00,099 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13002
[2022-12-14 13:37:00,100 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:37:00,112 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:00,112 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 13:37:00,113 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:37:00,113 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:37:00,119 INFO  L85        PathProgramCache]: Analyzing trace with hash -1855022552, now seen corresponding path program 1 times
[2022-12-14 13:37:00,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:37:00,120 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103531117]
[2022-12-14 13:37:00,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:37:00,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:37:01,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:37:49,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:37:49,414 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:37:49,414 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103531117]
[2022-12-14 13:37:49,414 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103531117] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:37:49,414 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:37:49,415 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 13:37:49,416 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661652696]
[2022-12-14 13:37:49,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:37:49,421 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 13:37:49,421 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:37:49,427 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 13:37:49,427 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 13:37:49,430 INFO  L87              Difference]: Start difference. First operand 131693 states and 174062 transitions. Second operand  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 13:38:34,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:38:34,924 INFO  L93              Difference]: Finished difference Result 455855 states and 613939 transitions.
[2022-12-14 13:38:34,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 13:38:34,925 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 13001
[2022-12-14 13:38:34,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:38:35,242 INFO  L225             Difference]: With dead ends: 455855
[2022-12-14 13:38:35,242 INFO  L226             Difference]: Without dead ends: 334293
[2022-12-14 13:38:35,300 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 13:38:35,301 INFO  L413           NwaCegarLoop]: 5412 mSDtfsCounter, 28962 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 40823 mSolverCounterSat, 25779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28962 SdHoareTripleChecker+Valid, 5508 SdHoareTripleChecker+Invalid, 66602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25779 IncrementalHoareTripleChecker+Valid, 40823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time
[2022-12-14 13:38:35,301 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28962 Valid, 5508 Invalid, 66602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25779 Valid, 40823 Invalid, 0 Unknown, 0 Unchecked, 43.6s Time]
[2022-12-14 13:38:35,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334293 states.
[2022-12-14 13:38:37,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334293 to 334293.
[2022-12-14 13:38:37,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 334293 states, 334292 states have (on average 1.2274777739221998) internal successors, (410336), 334292 states have internal predecessors, (410336), 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 13:38:38,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334293 states to 334293 states and 410336 transitions.
[2022-12-14 13:38:38,226 INFO  L78                 Accepts]: Start accepts. Automaton has 334293 states and 410336 transitions. Word has length 13001
[2022-12-14 13:38:38,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:38:38,228 INFO  L495      AbstractCegarLoop]: Abstraction has 334293 states and 410336 transitions.
[2022-12-14 13:38:38,229 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 13:38:38,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 334293 states and 410336 transitions.
[2022-12-14 13:38:39,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13085
[2022-12-14 13:38:39,844 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:38:39,846 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 13:38:39,846 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 13:38:39,846 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:38:39,847 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:38:39,848 INFO  L85        PathProgramCache]: Analyzing trace with hash 1908871888, now seen corresponding path program 1 times
[2022-12-14 13:38:39,848 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:38:39,848 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074165996]
[2022-12-14 13:38:39,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:38:39,849 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:38:41,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:39:26,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 3091 backedges. 3087 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 13:39:26,365 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:39:26,365 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074165996]
[2022-12-14 13:39:26,365 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074165996] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:39:26,365 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:39:26,366 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 13:39:26,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699915538]
[2022-12-14 13:39:26,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:39:26,371 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 13:39:26,371 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:39:26,376 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 13:39:26,376 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 13:39:26,379 INFO  L87              Difference]: Start difference. First operand 334293 states and 410336 transitions. Second operand  has 4 states, 4 states have (on average 3270.25) internal successors, (13081), 3 states have internal predecessors, (13081), 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 13:40:16,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:40:16,386 INFO  L93              Difference]: Finished difference Result 1063655 states and 1322761 transitions.
[2022-12-14 13:40:16,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 13:40:16,388 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3270.25) internal successors, (13081), 3 states have internal predecessors, (13081), 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 13084
[2022-12-14 13:40:16,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:40:17,333 INFO  L225             Difference]: With dead ends: 1063655
[2022-12-14 13:40:17,333 INFO  L226             Difference]: Without dead ends: 739493
[2022-12-14 13:40:17,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 13:40:17,465 INFO  L413           NwaCegarLoop]: 7951 mSDtfsCounter, 17667 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 57919 mSolverCounterSat, 17801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17667 SdHoareTripleChecker+Valid, 8073 SdHoareTripleChecker+Invalid, 75720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17801 IncrementalHoareTripleChecker+Valid, 57919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time
[2022-12-14 13:40:17,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17667 Valid, 8073 Invalid, 75720 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17801 Valid, 57919 Invalid, 0 Unknown, 0 Unchecked, 46.6s Time]
[2022-12-14 13:40:17,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 739493 states.
[2022-12-14 13:40:22,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 739493 to 739493.
[2022-12-14 13:40:23,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 739493 states, 739492 states have (on average 1.1718639282101768) internal successors, (866584), 739492 states have internal predecessors, (866584), 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 13:40:24,267 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 739493 states to 739493 states and 866584 transitions.
[2022-12-14 13:40:24,267 INFO  L78                 Accepts]: Start accepts. Automaton has 739493 states and 866584 transitions. Word has length 13084
[2022-12-14 13:40:24,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:40:24,269 INFO  L495      AbstractCegarLoop]: Abstraction has 739493 states and 866584 transitions.
[2022-12-14 13:40:24,270 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3270.25) internal successors, (13081), 3 states have internal predecessors, (13081), 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 13:40:24,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 739493 states and 866584 transitions.
[2022-12-14 13:40:25,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13168
[2022-12-14 13:40:25,901 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:40:25,905 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 13:40:25,905 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 13:40:25,906 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:40:25,906 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:40:25,907 INFO  L85        PathProgramCache]: Analyzing trace with hash -1805371639, now seen corresponding path program 1 times
[2022-12-14 13:40:25,907 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:40:25,908 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665533341]
[2022-12-14 13:40:25,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:40:25,909 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:40:27,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:40:59,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 3254 backedges. 3068 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2022-12-14 13:40:59,923 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:40:59,923 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665533341]
[2022-12-14 13:40:59,923 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665533341] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:40:59,923 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:40:59,924 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:40:59,924 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170206334]
[2022-12-14 13:40:59,924 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:40:59,929 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:40:59,930 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:40:59,935 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:40:59,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:40:59,937 INFO  L87              Difference]: Start difference. First operand 739493 states and 866584 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:41:33,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:41:33,841 INFO  L93              Difference]: Finished difference Result 2198215 states and 2579477 transitions.
[2022-12-14 13:41:33,841 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:41:33,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13167
[2022-12-14 13:41:33,845 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:41:35,666 INFO  L225             Difference]: With dead ends: 2198215
[2022-12-14 13:41:35,666 INFO  L226             Difference]: Without dead ends: 1468853