./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label20.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje --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 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-09 01:16:34,157 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-09 01:16:34,256 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf
[2024-11-09 01:16:34,265 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-09 01:16:34,265 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-09 01:16:34,308 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-09 01:16:34,308 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-09 01:16:34,309 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-09 01:16:34,309 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-09 01:16:34,310 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-09 01:16:34,310 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2024-11-09 01:16:34,311 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2024-11-09 01:16:34,311 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2024-11-09 01:16:34,311 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2024-11-09 01:16:34,312 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2024-11-09 01:16:34,312 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2024-11-09 01:16:34,315 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2024-11-09 01:16:34,316 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2024-11-09 01:16:34,316 INFO  L153        SettingsManager]:  * Interval Domain=false
[2024-11-09 01:16:34,317 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2024-11-09 01:16:34,317 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2024-11-09 01:16:34,322 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2024-11-09 01:16:34,322 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-09 01:16:34,323 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-09 01:16:34,323 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-09 01:16:34,323 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-09 01:16:34,323 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-09 01:16:34,324 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-09 01:16:34,324 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-09 01:16:34,324 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-09 01:16:34,325 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-09 01:16:34,325 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-09 01:16:34,325 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-09 01:16:34,327 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-09 01:16:34,327 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-09 01:16:34,328 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-09 01:16:34,328 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-09 01:16:34,328 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-09 01:16:34,328 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-09 01:16:34,328 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-09 01:16:34,329 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-09 01:16:34,329 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-09 01:16:34,329 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2024-11-09 01:16:34,329 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-09 01:16:34,330 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-09 01:16:34,330 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2024-11-09 01:16:34,331 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-09 01:16:34,331 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_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/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_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje
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 -> 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
[2024-11-09 01:16:34,669 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-09 01:16:34,699 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-09 01:16:34,702 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-09 01:16:34,704 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-09 01:16:34,705 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-09 01:16:34,706 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/eca-programs/Problem101_label20.c
Unable to find full path for "g++"
[2024-11-09 01:16:36,804 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-09 01:16:39,515 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-09 01:16:39,516 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/sv-benchmarks/c/eca-programs/Problem101_label20.c
[2024-11-09 01:16:39,670 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/data/27917894c/b1f43942138647fbb1517a82eb054375/FLAGdffa87805
[2024-11-09 01:16:39,688 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/data/27917894c/b1f43942138647fbb1517a82eb054375
[2024-11-09 01:16:39,691 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-09 01:16:39,693 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-09 01:16:39,695 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-09 01:16:39,695 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-09 01:16:39,704 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-09 01:16:39,705 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:39" (1/1) ...
[2024-11-09 01:16:39,706 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0f5c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:39, skipping insertion in model container
[2024-11-09 01:16:39,709 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:39" (1/1) ...
[2024-11-09 01:16:40,928 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-09 01:16:54,991 WARN  L250   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_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2024-11-09 01:16:55,061 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-09 01:16:55,081 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-09 01:17:04,143 WARN  L250   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_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2024-11-09 01:17:04,158 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-09 01:17:05,457 INFO  L204         MainTranslator]: Completed translation
[2024-11-09 01:17:05,458 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05 WrapperNode
[2024-11-09 01:17:05,458 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-09 01:17:05,459 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-09 01:17:05,460 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-09 01:17:05,460 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-09 01:17:05,469 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:06,249 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:09,589 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83825
[2024-11-09 01:17:09,590 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-09 01:17:09,591 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-09 01:17:09,591 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-09 01:17:09,591 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-09 01:17:09,604 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:09,605 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:10,545 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:10,549 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:12,533 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:12,802 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:13,217 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:13,322 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:13,785 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-09 01:17:13,786 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-09 01:17:13,787 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-09 01:17:13,787 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-09 01:17:13,788 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (1/1) ...
[2024-11-09 01:17:13,799 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-09 01:17:13,813 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/z3
[2024-11-09 01:17:13,839 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2024-11-09 01:17:13,845 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1e3cfd-e376-4999-bf4b-c6cb65c3b95e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2024-11-09 01:17:13,880 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-09 01:17:13,880 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-11-09 01:17:13,881 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-09 01:17:13,883 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-09 01:17:14,130 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-09 01:17:14,132 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-09 01:18:12,734 INFO  L?                        ?]: Removed 10238 outVars from TransFormulas that were not future-live.
[2024-11-09 01:18:12,735 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-09 01:18:14,237 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-09 01:18:14,238 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-09 01:18:14,238 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:18:14 BoogieIcfgContainer
[2024-11-09 01:18:14,238 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-09 01:18:14,241 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-09 01:18:14,243 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-09 01:18:14,246 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-09 01:18:14,247 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:16:39" (1/3) ...
[2024-11-09 01:18:14,248 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedaefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:18:14, skipping insertion in model container
[2024-11-09 01:18:14,249 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:05" (2/3) ...
[2024-11-09 01:18:14,250 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedaefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:18:14, skipping insertion in model container
[2024-11-09 01:18:14,250 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:18:14" (3/3) ...
[2024-11-09 01:18:14,252 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label20.c
[2024-11-09 01:18:14,278 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-09 01:18:14,280 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-09 01:18:14,564 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-09 01:18:14,575 INFO  L333      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, 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;@4ea5ae47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-09 01:18:14,575 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-09 01:18:14,621 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)
[2024-11-09 01:18:16,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2024-11-09 01:18:16,042 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-09 01:18:16,047 INFO  L215           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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[2024-11-09 01:18:16,049 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-09 01:18:16,056 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-09 01:18:16,063 INFO  L85        PathProgramCache]: Analyzing trace with hash 1630414215, now seen corresponding path program 1 times
[2024-11-09 01:18:16,075 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-09 01:18:16,075 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240764743]
[2024-11-09 01:18:16,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-09 01:18:16,081 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-09 01:18:20,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-09 01:18:51,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-09 01:18:51,998 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2024-11-09 01:18:51,999 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240764743]
[2024-11-09 01:18:52,000 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240764743] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-09 01:18:52,000 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-09 01:18:52,002 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-09 01:18:52,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504240180]
[2024-11-09 01:18:52,005 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-09 01:18:52,022 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-09 01:18:52,023 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2024-11-09 01:18:52,069 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-09 01:18:52,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-09 01:18:52,104 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)
[2024-11-09 01:19:44,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-09 01:19:44,526 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2024-11-09 01:19:44,527 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-09 01:19:44,536 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
[2024-11-09 01:19:44,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-09 01:19:44,676 INFO  L225             Difference]: With dead ends: 30401
[2024-11-09 01:19:44,676 INFO  L226             Difference]: Without dead ends: 20263
[2024-11-09 01:19:44,698 INFO  L431           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
[2024-11-09 01:19:44,703 INFO  L432           NwaCegarLoop]: 4811 mSDtfsCounter, 3051 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29400 mSolverCounterSat, 11205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 40605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11205 IncrementalHoareTripleChecker+Valid, 29400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time
[2024-11-09 01:19:44,708 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 4861 Invalid, 40605 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11205 Valid, 29400 Invalid, 0 Unknown, 0 Unchecked, 51.1s Time]
[2024-11-09 01:19:44,763 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2024-11-09 01:19:45,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2024-11-09 01:19:45,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.7607837330964367) internal successors, (35677), 20262 states have internal predecessors, (35677), 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)
[2024-11-09 01:19:45,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 35677 transitions.
[2024-11-09 01:19:45,452 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 35677 transitions. Word has length 10085
[2024-11-09 01:19:45,472 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-09 01:19:45,472 INFO  L471      AbstractCegarLoop]: Abstraction has 20263 states and 35677 transitions.
[2024-11-09 01:19:45,477 INFO  L472      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)
[2024-11-09 01:19:45,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 35677 transitions.
[2024-11-09 01:19:46,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2024-11-09 01:19:46,632 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-09 01:19:46,638 INFO  L215           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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[2024-11-09 01:19:46,639 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-09 01:19:46,639 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-09 01:19:46,640 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-09 01:19:46,645 INFO  L85        PathProgramCache]: Analyzing trace with hash -2081357014, now seen corresponding path program 1 times
[2024-11-09 01:19:46,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-09 01:19:46,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715033260]
[2024-11-09 01:19:46,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-09 01:19:46,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-09 01:19:48,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat