./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label16.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_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/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_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/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_295cb108-f5d2-4bc0-934d-839b8e1d9391/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 521ecb21a44481abd134a70daa874bfd77abccd47d2184b1e98394b3da5fb6e0
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 13:23:45,293 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-02 13:23:45,358 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2023-12-02 13:23:45,363 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 13:23:45,364 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 13:23:45,404 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 13:23:45,405 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 13:23:45,406 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 13:23:45,406 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 13:23:45,407 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 13:23:45,407 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-12-02 13:23:45,408 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 13:23:45,409 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-12-02 13:23:45,409 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 13:23:45,410 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-12-02 13:23:45,410 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-12-02 13:23:45,411 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 13:23:45,411 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-12-02 13:23:45,412 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-12-02 13:23:45,412 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 13:23:45,412 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-12-02 13:23:45,413 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-12-02 13:23:45,414 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 13:23:45,414 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-02 13:23:45,415 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-02 13:23:45,415 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-02 13:23:45,416 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-02 13:23:45,421 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-02 13:23:45,422 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 13:23:45,422 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 13:23:45,423 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 13:23:45,423 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-02 13:23:45,423 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-02 13:23:45,424 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-02 13:23:45,424 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 13:23:45,424 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 13:23:45,424 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-02 13:23:45,424 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:23:45,425 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 13:23:45,425 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 13:23:45,425 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 13:23:45,425 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 13:23:45,426 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 13:23:45,426 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 13:23:45,426 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 13:23:45,426 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-12-02 13:23:45,426 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 13:23:45,426 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_295cb108-f5d2-4bc0-934d-839b8e1d9391/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_295cb108-f5d2-4bc0-934d-839b8e1d9391/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 -> 521ecb21a44481abd134a70daa874bfd77abccd47d2184b1e98394b3da5fb6e0
[2023-12-02 13:23:45,633 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 13:23:45,653 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 13:23:45,656 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 13:23:45,657 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-02 13:23:45,658 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-02 13:23:45,659 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/eca-rers2012/Problem07_label16.c
[2023-12-02 13:23:48,347 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-02 13:23:49,969 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-02 13:23:49,969 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/sv-benchmarks/c/eca-rers2012/Problem07_label16.c
[2023-12-02 13:23:50,105 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/data/46a39e3aa/d9e9b360f7da4ecbbe71829ed60188bf/FLAG81b3cd073
[2023-12-02 13:23:50,117 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/data/46a39e3aa/d9e9b360f7da4ecbbe71829ed60188bf
[2023-12-02 13:23:50,120 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 13:23:50,121 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 13:23:50,122 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 13:23:50,122 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 13:23:50,125 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 13:23:50,126 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:50" (1/1) ...
[2023-12-02 13:23:50,127 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cecd7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:50, skipping insertion in model container
[2023-12-02 13:23:50,127 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:50" (1/1) ...
[2023-12-02 13:23:50,949 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-02 13:24:01,634 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_295cb108-f5d2-4bc0-934d-839b8e1d9391/sv-benchmarks/c/eca-rers2012/Problem07_label16.c[2775464,2775477]
[2023-12-02 13:24:01,715 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:24:01,726 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-02 13:24:08,283 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_295cb108-f5d2-4bc0-934d-839b8e1d9391/sv-benchmarks/c/eca-rers2012/Problem07_label16.c[2775464,2775477]
[2023-12-02 13:24:08,286 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:24:09,175 INFO  L206         MainTranslator]: Completed translation
[2023-12-02 13:24:09,175 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09 WrapperNode
[2023-12-02 13:24:09,175 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 13:24:09,177 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 13:24:09,177 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 13:24:09,177 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 13:24:09,185 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:09,612 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:11,924 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774
[2023-12-02 13:24:11,925 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 13:24:11,925 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 13:24:11,926 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 13:24:11,926 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 13:24:11,934 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:11,934 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:12,389 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:12,389 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:13,577 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:13,804 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:14,014 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:14,124 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:14,447 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 13:24:14,448 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 13:24:14,449 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 13:24:14,449 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-02 13:24:14,450 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (1/1) ...
[2023-12-02 13:24:14,458 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:24:14,472 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:24:14,486 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 13:24:14,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295cb108-f5d2-4bc0-934d-839b8e1d9391/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 13:24:14,526 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 13:24:14,526 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 13:24:14,526 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 13:24:14,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 13:24:14,683 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-02 13:24:14,685 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 13:24:57,344 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-02 13:24:58,483 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 13:24:58,483 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-02 13:24:58,490 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:24:58 BoogieIcfgContainer
[2023-12-02 13:24:58,490 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 13:24:58,493 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 13:24:58,493 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 13:24:58,496 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-02 13:24:58,497 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:23:50" (1/3) ...
[2023-12-02 13:24:58,498 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1c6c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:24:58, skipping insertion in model container
[2023-12-02 13:24:58,498 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:24:09" (2/3) ...
[2023-12-02 13:24:58,498 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1c6c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:24:58, skipping insertion in model container
[2023-12-02 13:24:58,499 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:24:58" (3/3) ...
[2023-12-02 13:24:58,500 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label16.c
[2023-12-02 13:24:58,519 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 13:24:58,519 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-02 13:24:58,733 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 13:24:58,740 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;@5c242c1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 13:24:58,741 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-02 13:24:58,779 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 13:24:59,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2023-12-02 13:24:59,549 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:24:59,556 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 13:24:59,560 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:24:59,565 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:24:59,574 INFO  L85        PathProgramCache]: Analyzing trace with hash 36539988, now seen corresponding path program 1 times
[2023-12-02 13:24:59,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:24:59,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445803910]
[2023-12-02 13:24:59,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:24:59,585 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:25:02,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:25:33,651 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 13:25:33,652 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:25:33,652 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445803910]
[2023-12-02 13:25:33,653 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445803910] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:25:33,653 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:25:33,654 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:25:33,656 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493760601]
[2023-12-02 13:25:33,656 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:25:33,668 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:25:33,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:25:33,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:25:33,704 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:25:33,730 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:26:10,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:26:10,863 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2023-12-02 13:26:10,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:26:10,869 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085
[2023-12-02 13:26:10,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:26:11,031 INFO  L225             Difference]: With dead ends: 30401
[2023-12-02 13:26:11,032 INFO  L226             Difference]: Without dead ends: 20263
[2023-12-02 13:26:11,049 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 13:26:11,053 INFO  L413           NwaCegarLoop]: 4042 mSDtfsCounter, 416 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30830 mSolverCounterSat, 12469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12469 IncrementalHoareTripleChecker+Valid, 30830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time
[2023-12-02 13:26:11,054 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 4092 Invalid, 43299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12469 Valid, 30830 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time]
[2023-12-02 13:26:11,102 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2023-12-02 13:26:11,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2023-12-02 13:26:11,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.799279439344586) internal successors, (36457), 20262 states have internal predecessors, (36457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:26:11,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36457 transitions.
[2023-12-02 13:26:11,653 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36457 transitions. Word has length 10085
[2023-12-02 13:26:11,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:26:11,672 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36457 transitions.
[2023-12-02 13:26:11,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:26:11,678 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36457 transitions.
[2023-12-02 13:26:12,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2023-12-02 13:26:12,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:26:12,372 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:26:12,373 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-02 13:26:12,373 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:26:12,374 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:26:12,377 INFO  L85        PathProgramCache]: Analyzing trace with hash -505726340, now seen corresponding path program 1 times
[2023-12-02 13:26:12,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:26:12,378 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874801376]
[2023-12-02 13:26:12,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:26:12,379 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:26:13,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:26:38,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:26:38,161 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:26:38,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874801376]
[2023-12-02 13:26:38,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874801376] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:26:38,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:26:38,164 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:26:38,164 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353229222]
[2023-12-02 13:26:38,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:26:38,185 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:26:38,185 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:26:38,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:26:38,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:26:38,206 INFO  L87              Difference]: Start difference. First operand 20263 states and 36457 transitions. Second operand  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:27:16,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:27:16,136 INFO  L93              Difference]: Finished difference Result 60785 states and 109368 transitions.
[2023-12-02 13:27:16,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:27:16,140 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10089
[2023-12-02 13:27:16,140 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:27:16,227 INFO  L225             Difference]: With dead ends: 60785
[2023-12-02 13:27:16,227 INFO  L226             Difference]: Without dead ends: 40523
[2023-12-02 13:27:16,250 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 13:27:16,251 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time
[2023-12-02 13:27:16,252 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4873 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time]
[2023-12-02 13:27:16,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2023-12-02 13:27:16,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2023-12-02 13:27:16,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.610680617935936) internal successors, (65268), 40522 states have internal predecessors, (65268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:27:16,995 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65268 transitions.
[2023-12-02 13:27:16,995 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65268 transitions. Word has length 10089
[2023-12-02 13:27:16,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:27:16,998 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65268 transitions.
[2023-12-02 13:27:17,001 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:27:17,001 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65268 transitions.
[2023-12-02 13:27:17,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2023-12-02 13:27:17,754 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:27:17,759 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:17,759 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-02 13:27:17,759 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:27:17,760 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:27:17,764 INFO  L85        PathProgramCache]: Analyzing trace with hash -1999650921, now seen corresponding path program 1 times
[2023-12-02 13:27:17,764 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:27:17,764 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598995127]
[2023-12-02 13:27:17,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:27:17,766 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:27:19,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:27:42,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:27:42,949 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:27:42,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598995127]
[2023-12-02 13:27:42,950 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598995127] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:27:42,951 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:27:42,953 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:27:42,953 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156796762]
[2023-12-02 13:27:42,953 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:27:42,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:27:42,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:27:42,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:27:42,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:27:42,976 INFO  L87              Difference]: Start difference. First operand 40523 states and 65268 transitions. Second operand  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:28:19,010 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:28:19,010 INFO  L93              Difference]: Finished difference Result 121565 states and 195801 transitions.
[2023-12-02 13:28:19,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:28:19,012 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10091
[2023-12-02 13:28:19,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:28:19,177 INFO  L225             Difference]: With dead ends: 121565
[2023-12-02 13:28:19,177 INFO  L226             Difference]: Without dead ends: 81043
[2023-12-02 13:28:19,212 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 13:28:19,213 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 13625 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time
[2023-12-02 13:28:19,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 4865 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time]
[2023-12-02 13:28:19,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2023-12-02 13:28:19,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2023-12-02 13:28:19,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.467288566422349) internal successors, (118912), 81042 states have internal predecessors, (118912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:28:20,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 118912 transitions.
[2023-12-02 13:28:20,060 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 118912 transitions. Word has length 10091
[2023-12-02 13:28:20,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:28:20,062 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 118912 transitions.
[2023-12-02 13:28:20,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:28:20,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 118912 transitions.
[2023-12-02 13:28:20,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10103
[2023-12-02 13:28:20,809 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:28:20,814 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-02 13:28:20,815 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-02 13:28:20,815 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:28:20,815 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:28:20,818 INFO  L85        PathProgramCache]: Analyzing trace with hash 1231175136, now seen corresponding path program 1 times
[2023-12-02 13:28:20,819 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:28:20,819 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761777268]
[2023-12-02 13:28:20,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:28:20,820 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:28:22,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:28:49,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-12-02 13:28:49,720 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:28:49,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761777268]
[2023-12-02 13:28:49,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761777268] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:28:49,720 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:28:49,722 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:28:49,722 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637803584]
[2023-12-02 13:28:49,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:28:49,730 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:28:49,731 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:28:49,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:28:49,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:28:49,740 INFO  L87              Difference]: Start difference. First operand 81043 states and 118912 transitions. Second operand  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:29:28,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:29:28,222 INFO  L93              Difference]: Finished difference Result 243125 states and 356733 transitions.
[2023-12-02 13:29:28,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:29:28,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10102
[2023-12-02 13:29:28,225 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:29:28,410 INFO  L225             Difference]: With dead ends: 243125
[2023-12-02 13:29:28,410 INFO  L226             Difference]: Without dead ends: 162083
[2023-12-02 13:29:28,442 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 13:29:28,443 INFO  L413           NwaCegarLoop]: 6088 mSDtfsCounter, 13413 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27411 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13413 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 40441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time
[2023-12-02 13:29:28,444 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13413 Valid, 6136 Invalid, 40441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27411 Invalid, 0 Unknown, 0 Unchecked, 37.3s Time]
[2023-12-02 13:29:28,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2023-12-02 13:29:29,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2023-12-02 13:29:29,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3329549240507892) internal successors, (216048), 162082 states have internal predecessors, (216048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:29:30,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 216048 transitions.
[2023-12-02 13:29:30,373 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 216048 transitions. Word has length 10102
[2023-12-02 13:29:30,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:29:30,375 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 216048 transitions.
[2023-12-02 13:29:30,377 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:29:30,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 216048 transitions.
[2023-12-02 13:29:31,262 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10134
[2023-12-02 13:29:31,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:29:31,267 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:29:31,268 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-02 13:29:31,268 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:29:31,268 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:29:31,272 INFO  L85        PathProgramCache]: Analyzing trace with hash -682647858, now seen corresponding path program 1 times
[2023-12-02 13:29:31,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:29:31,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924114221]
[2023-12-02 13:29:31,274 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:29:31,274 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:29:32,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:29:56,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:29:56,124 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:29:56,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924114221]
[2023-12-02 13:29:56,125 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924114221] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:29:56,125 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:29:56,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:29:56,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018598869]
[2023-12-02 13:29:56,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:29:56,137 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:29:56,137 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:29:56,147 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:29:56,147 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:29:56,149 INFO  L87              Difference]: Start difference. First operand 162083 states and 216048 transitions. Second operand  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:30:35,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:30:35,247 INFO  L93              Difference]: Finished difference Result 486245 states and 648141 transitions.
[2023-12-02 13:30:35,247 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:30:35,249 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10133
[2023-12-02 13:30:35,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:30:35,693 INFO  L225             Difference]: With dead ends: 486245
[2023-12-02 13:30:35,693 INFO  L226             Difference]: Without dead ends: 324163
[2023-12-02 13:30:35,756 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 13:30:35,757 INFO  L413           NwaCegarLoop]: 7309 mSDtfsCounter, 11709 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30394 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11709 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 41475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time
[2023-12-02 13:30:35,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11709 Valid, 7357 Invalid, 41475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30394 Invalid, 0 Unknown, 0 Unchecked, 37.0s Time]
[2023-12-02 13:30:35,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324163 states.
[2023-12-02 13:30:38,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324163 to 324163.
[2023-12-02 13:30:38,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 324163 states, 324162 states have (on average 1.255440181143996) internal successors, (406966), 324162 states have internal predecessors, (406966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:30:39,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324163 states to 324163 states and 406966 transitions.
[2023-12-02 13:30:39,272 INFO  L78                 Accepts]: Start accepts. Automaton has 324163 states and 406966 transitions. Word has length 10133
[2023-12-02 13:30:39,273 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:30:39,274 INFO  L495      AbstractCegarLoop]: Abstraction has 324163 states and 406966 transitions.
[2023-12-02 13:30:39,275 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:30:39,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 324163 states and 406966 transitions.
[2023-12-02 13:30:40,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10190
[2023-12-02 13:30:40,339 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:30:40,343 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:40,343 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-02 13:30:40,343 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:30:40,343 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:30:40,348 INFO  L85        PathProgramCache]: Analyzing trace with hash 1408130996, now seen corresponding path program 1 times
[2023-12-02 13:30:40,348 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:30:40,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358112502]
[2023-12-02 13:30:40,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:30:40,350 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:30:41,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:31:05,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-02 13:31:05,000 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:31:05,000 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358112502]
[2023-12-02 13:31:05,000 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358112502] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:31:05,000 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:31:05,003 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:31:05,003 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511069069]
[2023-12-02 13:31:05,003 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:31:05,013 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:31:05,013 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:31:05,023 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:31:05,023 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:31:05,026 INFO  L87              Difference]: Start difference. First operand 324163 states and 406966 transitions. Second operand  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:31:45,430 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:31:45,430 INFO  L93              Difference]: Finished difference Result 972485 states and 1220895 transitions.
[2023-12-02 13:31:45,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:31:45,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10189
[2023-12-02 13:31:45,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:31:46,091 INFO  L225             Difference]: With dead ends: 972485
[2023-12-02 13:31:46,091 INFO  L226             Difference]: Without dead ends: 648323
[2023-12-02 13:31:46,220 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 13:31:46,221 INFO  L413           NwaCegarLoop]: 5911 mSDtfsCounter, 12499 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29708 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12499 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 40742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time
[2023-12-02 13:31:46,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12499 Valid, 5959 Invalid, 40742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29708 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time]
[2023-12-02 13:31:46,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2023-12-02 13:31:52,058 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2023-12-02 13:31:52,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1914727558219527) internal successors, (772458), 648322 states have internal predecessors, (772458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:31:53,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 772458 transitions.
[2023-12-02 13:31:53,830 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 772458 transitions. Word has length 10189
[2023-12-02 13:31:53,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:31:53,831 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 772458 transitions.
[2023-12-02 13:31:53,833 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:31:53,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 772458 transitions.
[2023-12-02 13:31:55,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10321
[2023-12-02 13:31:55,741 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:31:55,744 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-02 13:31:55,744 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-02 13:31:55,744 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:31:55,745 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:31:55,747 INFO  L85        PathProgramCache]: Analyzing trace with hash 1340229325, now seen corresponding path program 1 times
[2023-12-02 13:31:55,747 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:31:55,747 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063696751]
[2023-12-02 13:31:55,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:31:55,748 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:31:57,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:32:32,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:32:32,034 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:32:32,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063696751]
[2023-12-02 13:32:32,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063696751] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:32:32,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:32:32,037 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:32:32,037 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466604429]
[2023-12-02 13:32:32,037 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:32:32,044 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:32:32,045 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:32:32,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:32:32,051 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:32:32,053 INFO  L87              Difference]: Start difference. First operand 648323 states and 772458 transitions. Second operand  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:33:07,427 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:33:07,427 INFO  L93              Difference]: Finished difference Result 1296645 states and 1544915 transitions.
[2023-12-02 13:33:07,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:33:07,429 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10320
[2023-12-02 13:33:07,430 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:33:08,186 INFO  L225             Difference]: With dead ends: 1296645
[2023-12-02 13:33:08,186 INFO  L226             Difference]: Without dead ends: 648323
[2023-12-02 13:33:08,424 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 13:33:08,425 INFO  L413           NwaCegarLoop]: 9994 mSDtfsCounter, 9977 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29469 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9977 SdHoareTripleChecker+Valid, 10042 SdHoareTripleChecker+Invalid, 34294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time
[2023-12-02 13:33:08,426 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9977 Valid, 10042 Invalid, 34294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29469 Invalid, 0 Unknown, 0 Unchecked, 31.2s Time]
[2023-12-02 13:33:09,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2023-12-02 13:33:14,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2023-12-02 13:33:14,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1907323829825303) internal successors, (771978), 648322 states have internal predecessors, (771978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:33:15,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 771978 transitions.
[2023-12-02 13:33:15,948 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 771978 transitions. Word has length 10320
[2023-12-02 13:33:15,949 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:33:15,949 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 771978 transitions.
[2023-12-02 13:33:15,950 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:33:15,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 771978 transitions.
[2023-12-02 13:33:17,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10511
[2023-12-02 13:33:17,751 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:33:17,754 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:33:17,754 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-12-02 13:33:17,754 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:33:17,754 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:33:17,756 INFO  L85        PathProgramCache]: Analyzing trace with hash 1523047016, now seen corresponding path program 1 times
[2023-12-02 13:33:17,756 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:33:17,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271216108]
[2023-12-02 13:33:17,757 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:33:17,758 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:33:19,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:33:53,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:33:53,036 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:33:53,036 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271216108]
[2023-12-02 13:33:53,036 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271216108] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:33:53,036 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:33:53,038 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:33:53,038 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131700676]
[2023-12-02 13:33:53,038 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:33:53,042 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 13:33:53,043 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:33:53,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 13:33:53,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 13:33:53,051 INFO  L87              Difference]: Start difference. First operand 648323 states and 771978 transitions. Second operand  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:34:32,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:34:32,778 INFO  L93              Difference]: Finished difference Result 1620805 states and 1911307 transitions.
[2023-12-02 13:34:32,778 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 13:34:32,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10510
[2023-12-02 13:34:32,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:34:33,887 INFO  L225             Difference]: With dead ends: 1620805
[2023-12-02 13:34:33,887 INFO  L226             Difference]: Without dead ends: 972483
[2023-12-02 13:34:34,107 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 13:34:34,107 INFO  L413           NwaCegarLoop]: 10007 mSDtfsCounter, 9760 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30619 mSolverCounterSat, 6484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9760 SdHoareTripleChecker+Valid, 10055 SdHoareTripleChecker+Invalid, 37103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6484 IncrementalHoareTripleChecker+Valid, 30619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time
[2023-12-02 13:34:34,108 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9760 Valid, 10055 Invalid, 37103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6484 Valid, 30619 Invalid, 0 Unknown, 0 Unchecked, 34.5s Time]
[2023-12-02 13:34:35,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2023-12-02 13:34:43,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2023-12-02 13:34:43,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1497529003107512) internal successors, (1118114), 972482 states have internal predecessors, (1118114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:34:46,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1118114 transitions.
[2023-12-02 13:34:46,105 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1118114 transitions. Word has length 10510
[2023-12-02 13:34:46,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:34:46,106 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1118114 transitions.
[2023-12-02 13:34:46,107 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:34:46,107 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1118114 transitions.
[2023-12-02 13:34:48,455 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10634
[2023-12-02 13:34:48,456 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:34:48,458 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-02 13:34:48,458 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-12-02 13:34:48,458 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:34:48,458 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:34:48,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1040096897, now seen corresponding path program 1 times
[2023-12-02 13:34:48,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:34:48,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699566937]
[2023-12-02 13:34:48,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:34:48,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:34:50,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat