./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
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_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 16:38:40,049 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-02 16:38:40,118 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2023-12-02 16:38:40,123 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 16:38:40,123 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 16:38:40,150 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 16:38:40,150 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 16:38:40,151 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 16:38:40,152 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 16:38:40,152 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 16:38:40,153 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-12-02 16:38:40,153 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 16:38:40,154 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-12-02 16:38:40,154 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 16:38:40,155 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-12-02 16:38:40,155 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-12-02 16:38:40,156 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 16:38:40,156 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-12-02 16:38:40,157 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-12-02 16:38:40,157 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 16:38:40,158 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-12-02 16:38:40,161 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-12-02 16:38:40,161 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 16:38:40,162 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-02 16:38:40,162 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-02 16:38:40,163 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-02 16:38:40,163 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-02 16:38:40,163 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-02 16:38:40,164 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 16:38:40,164 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 16:38:40,165 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 16:38:40,165 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-02 16:38:40,165 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-02 16:38:40,165 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-02 16:38:40,166 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 16:38:40,166 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 16:38:40,166 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-02 16:38:40,166 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 16:38:40,167 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 16:38:40,167 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 16:38:40,167 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 16:38:40,168 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 16:38:40,168 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 16:38:40,168 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 16:38:40,168 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 16:38:40,168 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-12-02 16:38:40,169 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 16:38:40,169 INFO  L153        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
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_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/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_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
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 -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2023-12-02 16:38:40,389 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 16:38:40,409 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 16:38:40,412 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 16:38:40,413 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-02 16:38:40,413 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-02 16:38:40,415 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2023-12-02 16:38:43,173 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-02 16:38:44,558 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-02 16:38:44,558 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2023-12-02 16:38:44,696 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/data/5dffac063/e5accfa4aad54538afd2267146bb763d/FLAGd1f5a9fd0
[2023-12-02 16:38:44,707 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/data/5dffac063/e5accfa4aad54538afd2267146bb763d
[2023-12-02 16:38:44,709 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 16:38:44,710 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 16:38:44,712 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 16:38:44,712 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 16:38:44,717 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 16:38:44,718 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:38:44" (1/1) ...
[2023-12-02 16:38:44,719 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106a74e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:38:44, skipping insertion in model container
[2023-12-02 16:38:44,719 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:38:44" (1/1) ...
[2023-12-02 16:38:45,486 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-02 16:38:55,966 WARN  L240   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_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2023-12-02 16:38:56,035 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 16:38:56,043 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-02 16:39:02,195 WARN  L240   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_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2023-12-02 16:39:02,201 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 16:39:03,069 INFO  L206         MainTranslator]: Completed translation
[2023-12-02 16:39:03,070 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03 WrapperNode
[2023-12-02 16:39:03,070 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 16:39:03,071 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 16:39:03,071 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 16:39:03,071 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 16:39:03,076 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:03,447 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:05,341 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774
[2023-12-02 16:39:05,342 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 16:39:05,342 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 16:39:05,342 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 16:39:05,343 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 16:39:05,349 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:05,349 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:05,592 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:05,592 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:06,342 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:06,473 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:06,692 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:06,765 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:07,041 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 16:39:07,042 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 16:39:07,042 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 16:39:07,042 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-02 16:39:07,043 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (1/1) ...
[2023-12-02 16:39:07,049 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 16:39:07,060 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 16:39:07,071 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 16:39:07,074 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab745ce8-2e81-4fce-837b-4ff9c3cf0af8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 16:39:07,106 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 16:39:07,106 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 16:39:07,106 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 16:39:07,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 16:39:07,228 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-02 16:39:07,229 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 16:39:46,516 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-02 16:39:47,401 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 16:39:47,401 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-02 16:39:47,406 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:39:47 BoogieIcfgContainer
[2023-12-02 16:39:47,407 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 16:39:47,409 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 16:39:47,409 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 16:39:47,412 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-02 16:39:47,412 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:38:44" (1/3) ...
[2023-12-02 16:39:47,413 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47297c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:39:47, skipping insertion in model container
[2023-12-02 16:39:47,413 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:39:03" (2/3) ...
[2023-12-02 16:39:47,413 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47297c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:39:47, skipping insertion in model container
[2023-12-02 16:39:47,414 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:39:47" (3/3) ...
[2023-12-02 16:39:47,415 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2023-12-02 16:39:47,428 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 16:39:47,429 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-02 16:39:47,757 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 16:39:47,764 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=LoopHeads, 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;@40b22f0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 16:39:47,765 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-02 16:39:47,797 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)
[2023-12-02 16:39:48,465 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2023-12-02 16:39:48,466 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:39:48,471 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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[2023-12-02 16:39:48,474 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:39:48,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:39:48,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 36537940, now seen corresponding path program 1 times
[2023-12-02 16:39:48,494 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:39:48,495 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718247175]
[2023-12-02 16:39:48,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:39:48,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:39:51,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:40:42,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 16:40:42,383 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:40:42,383 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718247175]
[2023-12-02 16:40:42,384 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718247175] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:40:42,384 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:40:42,386 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-02 16:40:42,387 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732587375]
[2023-12-02 16:40:42,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:40:42,404 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 16:40:42,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:40:42,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 16:40:42,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-02 16:40:42,489 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)
[2023-12-02 16:41:44,112 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:41:44,112 INFO  L93              Difference]: Finished difference Result 40533 states and 80861 transitions.
[2023-12-02 16:41:44,113 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-02 16:41:44,117 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
[2023-12-02 16:41:44,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:41:44,279 INFO  L225             Difference]: With dead ends: 40533
[2023-12-02 16:41:44,279 INFO  L226             Difference]: Without dead ends: 30393
[2023-12-02 16:41:44,295 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-02 16:41:44,298 INFO  L413           NwaCegarLoop]: 5085 mSDtfsCounter, 22155 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 51680 mSolverCounterSat, 18959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.7s 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, 60.4s IncrementalHoareTripleChecker+Time
[2023-12-02 16:41:44,299 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22155 Valid, 5196 Invalid, 70639 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18959 Valid, 51680 Invalid, 0 Unknown, 0 Unchecked, 60.4s Time]
[2023-12-02 16:41:44,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30393 states.
[2023-12-02 16:41:44,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30393 to 30393.
[2023-12-02 16:41:44,830 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)
[2023-12-02 16:41:44,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30393 states to 30393 states and 45573 transitions.
[2023-12-02 16:41:44,899 INFO  L78                 Accepts]: Start accepts. Automaton has 30393 states and 45573 transitions. Word has length 10085
[2023-12-02 16:41:44,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:41:44,912 INFO  L495      AbstractCegarLoop]: Abstraction has 30393 states and 45573 transitions.
[2023-12-02 16:41:44,915 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)
[2023-12-02 16:41:44,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 30393 states and 45573 transitions.
[2023-12-02 16:41:45,739 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12985
[2023-12-02 16:41:45,739 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:41:45,749 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]
[2023-12-02 16:41:45,749 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-02 16:41:45,749 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:41:45,750 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:41:45,754 INFO  L85        PathProgramCache]: Analyzing trace with hash 143664733, now seen corresponding path program 1 times
[2023-12-02 16:41:45,754 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:41:45,754 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563907818]
[2023-12-02 16:41:45,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:41:45,756 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:41:47,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:42:24,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-02 16:42:24,649 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:42:24,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563907818]
[2023-12-02 16:42:24,650 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563907818] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:42:24,650 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:42:24,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 16:42:24,652 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30780205]
[2023-12-02 16:42:24,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:42:24,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 16:42:24,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:42:24,677 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 16:42:24,678 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 16:42:24,682 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)
[2023-12-02 16:43:01,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:43:01,722 INFO  L93              Difference]: Finished difference Result 70915 states and 116444 transitions.
[2023-12-02 16:43:01,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 16:43:01,726 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
[2023-12-02 16:43:01,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:43:01,866 INFO  L225             Difference]: With dead ends: 70915
[2023-12-02 16:43:01,867 INFO  L226             Difference]: Without dead ends: 50653
[2023-12-02 16:43:01,887 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
[2023-12-02 16:43:01,889 INFO  L413           NwaCegarLoop]: 4814 mSDtfsCounter, 10912 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s 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, 36.3s IncrementalHoareTripleChecker+Time
[2023-12-02 16:43:01,890 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10912 Valid, 4862 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time]
[2023-12-02 16:43:01,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50653 states.
[2023-12-02 16:43:02,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50653 to 50653.
[2023-12-02 16:43:02,526 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)
[2023-12-02 16:43:02,586 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50653 states to 50653 states and 73820 transitions.
[2023-12-02 16:43:02,586 INFO  L78                 Accepts]: Start accepts. Automaton has 50653 states and 73820 transitions. Word has length 12984
[2023-12-02 16:43:02,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:43:02,591 INFO  L495      AbstractCegarLoop]: Abstraction has 50653 states and 73820 transitions.
[2023-12-02 16:43:02,593 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)
[2023-12-02 16:43:02,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 50653 states and 73820 transitions.
[2023-12-02 16:43:03,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12986
[2023-12-02 16:43:03,685 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:43:03,691 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 16:43:03,692 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-02 16:43:03,692 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:43:03,692 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:43:03,696 INFO  L85        PathProgramCache]: Analyzing trace with hash 1548785195, now seen corresponding path program 1 times
[2023-12-02 16:43:03,696 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:43:03,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455798697]
[2023-12-02 16:43:03,697 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:43:03,697 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:43:05,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:44:01,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 16:44:01,608 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:44:01,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455798697]
[2023-12-02 16:44:01,608 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455798697] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:44:01,608 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:44:01,610 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-02 16:44:01,611 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481586548]
[2023-12-02 16:44:01,611 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:44:01,619 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 16:44:01,619 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:44:01,632 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 16:44:01,632 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 16:44:01,636 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)
[2023-12-02 16:44:36,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:44:36,607 INFO  L93              Difference]: Finished difference Result 111435 states and 165527 transitions.
[2023-12-02 16:44:36,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 16:44:36,609 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
[2023-12-02 16:44:36,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:44:36,807 INFO  L225             Difference]: With dead ends: 111435
[2023-12-02 16:44:36,807 INFO  L226             Difference]: Without dead ends: 70913
[2023-12-02 16:44:36,837 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
[2023-12-02 16:44:36,838 INFO  L413           NwaCegarLoop]: 18144 mSDtfsCounter, 10150 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33483 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s 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, 34.1s IncrementalHoareTripleChecker+Time
[2023-12-02 16:44:36,839 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10150 Valid, 18193 Invalid, 37236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33483 Invalid, 0 Unknown, 0 Unchecked, 34.1s Time]
[2023-12-02 16:44:36,899 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70913 states.
[2023-12-02 16:44:37,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70913 to 70913.
[2023-12-02 16:44:37,669 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)
[2023-12-02 16:44:37,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70913 states to 70913 states and 100170 transitions.
[2023-12-02 16:44:37,768 INFO  L78                 Accepts]: Start accepts. Automaton has 70913 states and 100170 transitions. Word has length 12985
[2023-12-02 16:44:37,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:44:37,904 INFO  L495      AbstractCegarLoop]: Abstraction has 70913 states and 100170 transitions.
[2023-12-02 16:44:37,907 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)
[2023-12-02 16:44:37,907 INFO  L276                IsEmpty]: Start isEmpty. Operand 70913 states and 100170 transitions.
[2023-12-02 16:44:38,731 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12992
[2023-12-02 16:44:38,731 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:44:38,738 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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[2023-12-02 16:44:38,738 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-02 16:44:38,739 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:44:38,739 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:44:38,743 INFO  L85        PathProgramCache]: Analyzing trace with hash 2050411612, now seen corresponding path program 1 times
[2023-12-02 16:44:38,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:44:38,743 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858813866]
[2023-12-02 16:44:38,745 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:44:38,745 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:44:40,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:45:20,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-12-02 16:45:20,818 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:45:20,818 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858813866]
[2023-12-02 16:45:20,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858813866] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:45:20,818 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:45:20,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 16:45:20,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038712143]
[2023-12-02 16:45:20,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:45:20,964 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 16:45:20,965 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:45:20,973 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 16:45:20,973 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 16:45:20,976 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)
[2023-12-02 16:45:58,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:45:58,702 INFO  L93              Difference]: Finished difference Result 192475 states and 280235 transitions.
[2023-12-02 16:45:58,702 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 16:45:58,705 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
[2023-12-02 16:45:58,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:45:58,977 INFO  L225             Difference]: With dead ends: 192475
[2023-12-02 16:45:58,977 INFO  L226             Difference]: Without dead ends: 131693
[2023-12-02 16:45:58,998 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
[2023-12-02 16:45:59,000 INFO  L413           NwaCegarLoop]: 6715 mSDtfsCounter, 10069 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27589 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s 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, 36.7s IncrementalHoareTripleChecker+Time
[2023-12-02 16:45:59,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10069 Valid, 6763 Invalid, 40619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27589 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time]
[2023-12-02 16:45:59,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131693 states.
[2023-12-02 16:46:00,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131693 to 131693.
[2023-12-02 16:46:00,274 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)
[2023-12-02 16:46:00,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131693 states to 131693 states and 174062 transitions.
[2023-12-02 16:46:00,411 INFO  L78                 Accepts]: Start accepts. Automaton has 131693 states and 174062 transitions. Word has length 12991
[2023-12-02 16:46:00,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:46:00,414 INFO  L495      AbstractCegarLoop]: Abstraction has 131693 states and 174062 transitions.
[2023-12-02 16:46:00,416 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)
[2023-12-02 16:46:00,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 131693 states and 174062 transitions.
[2023-12-02 16:46:01,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13002
[2023-12-02 16:46:01,668 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:46:01,675 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]
[2023-12-02 16:46:01,675 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-02 16:46:01,676 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:46:01,676 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:46:01,681 INFO  L85        PathProgramCache]: Analyzing trace with hash -597111805, now seen corresponding path program 1 times
[2023-12-02 16:46:01,681 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:46:01,681 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912301396]
[2023-12-02 16:46:01,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:46:01,683 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:46:03,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:46:56,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 16:46:56,142 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:46:56,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912301396]
[2023-12-02 16:46:56,142 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912301396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:46:56,142 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:46:56,144 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-02 16:46:56,144 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062502128]
[2023-12-02 16:46:56,145 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:46:56,155 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 16:46:56,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:46:56,163 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 16:46:56,163 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-02 16:46:56,167 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)
[2023-12-02 16:47:52,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:47:52,948 INFO  L93              Difference]: Finished difference Result 455855 states and 613939 transitions.
[2023-12-02 16:47:52,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-02 16:47:52,952 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
[2023-12-02 16:47:52,953 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:47:53,319 INFO  L225             Difference]: With dead ends: 455855
[2023-12-02 16:47:53,319 INFO  L226             Difference]: Without dead ends: 334293
[2023-12-02 16:47:53,378 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
[2023-12-02 16:47:53,379 INFO  L413           NwaCegarLoop]: 5413 mSDtfsCounter, 28959 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40825 mSolverCounterSat, 25779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28959 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 66604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 25779 IncrementalHoareTripleChecker+Valid, 40825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time
[2023-12-02 16:47:53,379 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28959 Valid, 5510 Invalid, 66604 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [25779 Valid, 40825 Invalid, 0 Unknown, 0 Unchecked, 54.6s Time]
[2023-12-02 16:47:53,588 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334293 states.
[2023-12-02 16:47:56,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334293 to 334293.
[2023-12-02 16:47:56,534 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 334293 states, 334292 states have (on average 1.227465808335228) internal successors, (410332), 334292 states have internal predecessors, (410332), 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)
[2023-12-02 16:47:57,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334293 states to 334293 states and 410332 transitions.
[2023-12-02 16:47:57,277 INFO  L78                 Accepts]: Start accepts. Automaton has 334293 states and 410332 transitions. Word has length 13001
[2023-12-02 16:47:57,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:47:57,280 INFO  L495      AbstractCegarLoop]: Abstraction has 334293 states and 410332 transitions.
[2023-12-02 16:47:57,283 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)
[2023-12-02 16:47:57,283 INFO  L276                IsEmpty]: Start isEmpty. Operand 334293 states and 410332 transitions.
[2023-12-02 16:47:58,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13096
[2023-12-02 16:47:58,535 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 16:47:58,538 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-12-02 16:47:58,538 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-02 16:47:58,538 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 16:47:58,539 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 16:47:58,542 INFO  L85        PathProgramCache]: Analyzing trace with hash 956742652, now seen corresponding path program 1 times
[2023-12-02 16:47:58,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 16:47:58,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436419442]
[2023-12-02 16:47:58,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 16:47:58,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 16:48:00,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 16:48:49,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 3127 backedges. 3108 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-12-02 16:48:49,356 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 16:48:49,356 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436419442]
[2023-12-02 16:48:49,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436419442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 16:48:49,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 16:48:49,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-02 16:48:49,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416945721]
[2023-12-02 16:48:49,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 16:48:49,365 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 16:48:49,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 16:48:49,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 16:48:49,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-02 16:48:49,377 INFO  L87              Difference]: Start difference. First operand 334293 states and 410332 transitions. Second operand  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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)
[2023-12-02 16:49:48,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 16:49:48,279 INFO  L93              Difference]: Finished difference Result 1063655 states and 1322749 transitions.
[2023-12-02 16:49:48,280 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-02 16:49:48,283 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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 13095
[2023-12-02 16:49:48,285 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 16:49:49,187 INFO  L225             Difference]: With dead ends: 1063655
[2023-12-02 16:49:49,187 INFO  L226             Difference]: Without dead ends: 739493
[2023-12-02 16:49:49,343 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
[2023-12-02 16:49:49,344 INFO  L413           NwaCegarLoop]: 7950 mSDtfsCounter, 25902 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 42676 mSolverCounterSat, 22553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25902 SdHoareTripleChecker+Valid, 8047 SdHoareTripleChecker+Invalid, 65229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 22553 IncrementalHoareTripleChecker+Valid, 42676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time
[2023-12-02 16:49:49,344 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25902 Valid, 8047 Invalid, 65229 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [22553 Valid, 42676 Invalid, 0 Unknown, 0 Unchecked, 54.6s Time]
[2023-12-02 16:49:49,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 739493 states.
[2023-12-02 16:49:56,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 739493 to 739493.
[2023-12-02 16:49:56,499 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 739493 states, 739492 states have (on average 1.171869337328869) internal successors, (866588), 739492 states have internal predecessors, (866588), 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)
[2023-12-02 16:49:57,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 739493 states to 739493 states and 866588 transitions.
[2023-12-02 16:49:57,812 INFO  L78                 Accepts]: Start accepts. Automaton has 739493 states and 866588 transitions. Word has length 13095
[2023-12-02 16:49:57,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 16:49:57,813 INFO  L495      AbstractCegarLoop]: Abstraction has 739493 states and 866588 transitions.
[2023-12-02 16:49:57,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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)
[2023-12-02 16:49:57,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 739493 states and 866588 transitions.