./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 14fcf2eb598b978d68bd40c9210187d3be1cc70a688dfb8c4b12d3874ffacf6a
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 04:38:28,203 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 04:38:28,327 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-28 04:38:28,343 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 04:38:28,343 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 04:38:28,397 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 04:38:28,399 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 04:38:28,399 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 04:38:28,400 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 04:38:28,400 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 04:38:28,401 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 04:38:28,402 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 04:38:28,403 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 04:38:28,403 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 04:38:28,403 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 04:38:28,404 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 04:38:28,404 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 04:38:28,405 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 04:38:28,406 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 04:38:28,406 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 04:38:28,406 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 04:38:28,406 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 04:38:28,406 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 04:38:28,406 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 04:38:28,407 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:38:28,407 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 04:38:28,407 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 04:38:28,407 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 04:38:28,408 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 04:38:28,408 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:38:28,409 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 04:38:28,409 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 04:38:28,409 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 04:38:28,409 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 04:38:28,409 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 04:38:28,410 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 04:38:28,410 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 04:38:28,410 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 04:38:28,410 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 04:38:28,411 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 04:38:28,411 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB
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 -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14fcf2eb598b978d68bd40c9210187d3be1cc70a688dfb8c4b12d3874ffacf6a
[2024-11-28 04:38:28,823 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 04:38:28,841 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 04:38:28,846 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 04:38:28,848 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 04:38:28,848 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 04:38:28,852 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c
[2024-11-28 04:38:32,394 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/data/e17822a44/feb330c6aef542018555a60fec939a2c/FLAG4d057cf71
[2024-11-28 04:38:33,189 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 04:38:33,189 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c
[2024-11-28 04:38:33,252 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/data/e17822a44/feb330c6aef542018555a60fec939a2c/FLAG4d057cf71
[2024-11-28 04:38:33,278 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/data/e17822a44/feb330c6aef542018555a60fec939a2c
[2024-11-28 04:38:33,281 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 04:38:33,282 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 04:38:33,285 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 04:38:33,285 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 04:38:33,290 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 04:38:33,291 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:33" (1/1) ...
[2024-11-28 04:38:33,292 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8068cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:33, skipping insertion in model container
[2024-11-28 04:38:33,292 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:33" (1/1) ...
[2024-11-28 04:38:33,531 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 04:38:33,890 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_669fa1ba-cd12-4080-bcfe-5118dc07b62b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c[1180,1193]
[2024-11-28 04:38:35,928 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 04:38:35,944 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 04:38:35,958 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_669fa1ba-cd12-4080-bcfe-5118dc07b62b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c[1180,1193]
[2024-11-28 04:38:37,477 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 04:38:37,498 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 04:38:37,499 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37 WrapperNode
[2024-11-28 04:38:37,500 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 04:38:37,501 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 04:38:37,502 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 04:38:37,502 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 04:38:37,513 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:37,936 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:43,375 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48133
[2024-11-28 04:38:43,376 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 04:38:43,378 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 04:38:43,378 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 04:38:43,380 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 04:38:43,392 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:43,395 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:44,503 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:44,971 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-28 04:38:44,972 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:44,972 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:46,752 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:46,857 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:47,091 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:47,379 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:47,541 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:48,525 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 04:38:48,526 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 04:38:48,526 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 04:38:48,526 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 04:38:48,527 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (1/1) ...
[2024-11-28 04:38:48,532 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:38:48,546 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 04:38:48,562 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 04:38:48,568 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669fa1ba-cd12-4080-bcfe-5118dc07b62b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 04:38:48,596 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 04:38:48,596 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 04:38:48,596 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 04:38:48,597 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 04:38:51,573 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 04:38:51,576 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 04:46:18,179 INFO  L?                        ?]: Removed 27134 outVars from TransFormulas that were not future-live.
[2024-11-28 04:46:18,179 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 04:46:18,366 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 04:46:18,366 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-28 04:46:18,368 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:46:18 BoogieIcfgContainer
[2024-11-28 04:46:18,368 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 04:46:18,370 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 04:46:18,371 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 04:46:18,377 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 04:46:18,377 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:38:33" (1/3) ...
[2024-11-28 04:46:18,378 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1df86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:46:18, skipping insertion in model container
[2024-11-28 04:46:18,378 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37" (2/3) ...
[2024-11-28 04:46:18,378 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1df86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:46:18, skipping insertion in model container
[2024-11-28 04:46:18,378 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:46:18" (3/3) ...
[2024-11-28 04:46:18,380 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c
[2024-11-28 04:46:18,397 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 04:46:18,399 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.pgm_protocol.4.prop6-back-serstep.c that has 1 procedures, 16066 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-28 04:46:18,712 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 04:46:18,728 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=PETRI_NET, 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;@333abac2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 04:46:18,729 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 04:46:18,774 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 16066 states, 16064 states have (on average 1.5001867529880477) internal successors, (24099), 16065 states have internal predecessors, (24099), 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)
[2024-11-28 04:46:18,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1256
[2024-11-28 04:46:18,876 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:46:18,877 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:46:18,879 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:46:18,885 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:46:18,886 INFO  L85        PathProgramCache]: Analyzing trace with hash 1835470445, now seen corresponding path program 1 times
[2024-11-28 04:46:18,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:46:18,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834985417]
[2024-11-28 04:46:18,895 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:46:18,895 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:46:20,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:46:26,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:46:26,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:46:26,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834985417]
[2024-11-28 04:46:26,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834985417] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 04:46:26,526 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 04:46:26,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-28 04:46:26,528 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944095391]
[2024-11-28 04:46:26,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 04:46:26,537 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 04:46:26,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:46:26,562 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 04:46:26,563 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:46:26,603 INFO  L87              Difference]: Start difference. First operand  has 16066 states, 16064 states have (on average 1.5001867529880477) internal successors, (24099), 16065 states have internal predecessors, (24099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 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)
[2024-11-28 04:46:27,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:46:27,528 INFO  L93              Difference]: Finished difference Result 31433 states and 47153 transitions.
[2024-11-28 04:46:27,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 04:46:27,536 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 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 1255
[2024-11-28 04:46:27,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:46:27,634 INFO  L225             Difference]: With dead ends: 31433
[2024-11-28 04:46:27,634 INFO  L226             Difference]: Without dead ends: 16065
[2024-11-28 04:46:27,663 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:46:27,666 INFO  L435           NwaCegarLoop]: 24093 mSDtfsCounter, 0 mSDsluCounter, 48180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72273 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 04:46:27,669 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72273 Invalid, 11 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 04:46:27,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16065 states.
[2024-11-28 04:46:28,100 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16065 to 16065.
[2024-11-28 04:46:28,141 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16065 states, 16064 states have (on average 1.500062250996016) internal successors, (24097), 16064 states have internal predecessors, (24097), 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)
[2024-11-28 04:46:28,224 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16065 states to 16065 states and 24097 transitions.
[2024-11-28 04:46:28,225 INFO  L78                 Accepts]: Start accepts. Automaton has 16065 states and 24097 transitions. Word has length 1255
[2024-11-28 04:46:28,229 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:46:28,232 INFO  L471      AbstractCegarLoop]: Abstraction has 16065 states and 24097 transitions.
[2024-11-28 04:46:28,235 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 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)
[2024-11-28 04:46:28,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 16065 states and 24097 transitions.
[2024-11-28 04:46:28,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1257
[2024-11-28 04:46:28,282 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:46:28,282 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:46:28,283 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-28 04:46:28,283 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:46:28,285 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:46:28,285 INFO  L85        PathProgramCache]: Analyzing trace with hash 1066712225, now seen corresponding path program 1 times
[2024-11-28 04:46:28,286 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:46:28,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435126481]
[2024-11-28 04:46:28,286 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:46:28,287 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:46:29,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:46:36,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:46:36,682 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:46:36,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435126481]
[2024-11-28 04:46:36,682 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435126481] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 04:46:36,682 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 04:46:36,682 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-28 04:46:36,683 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949236899]
[2024-11-28 04:46:36,683 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 04:46:36,688 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 04:46:36,688 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:46:36,690 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 04:46:36,690 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:46:36,691 INFO  L87              Difference]: Start difference. First operand 16065 states and 24097 transitions. Second operand  has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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)
[2024-11-28 04:46:37,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:46:37,461 INFO  L93              Difference]: Finished difference Result 31434 states and 47151 transitions.
[2024-11-28 04:46:37,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 04:46:37,463 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 1256
[2024-11-28 04:46:37,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:46:37,537 INFO  L225             Difference]: With dead ends: 31434
[2024-11-28 04:46:37,538 INFO  L226             Difference]: Without dead ends: 16067
[2024-11-28 04:46:37,556 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:46:37,557 INFO  L435           NwaCegarLoop]: 24093 mSDtfsCounter, 0 mSDsluCounter, 48176 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72269 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 04:46:37,558 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72269 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 04:46:37,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16067 states.
[2024-11-28 04:46:37,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 16067.
[2024-11-28 04:46:37,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16067 states, 16066 states have (on average 1.5) internal successors, (24099), 16066 states have internal predecessors, (24099), 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)
[2024-11-28 04:46:38,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16067 states to 16067 states and 24099 transitions.
[2024-11-28 04:46:38,033 INFO  L78                 Accepts]: Start accepts. Automaton has 16067 states and 24099 transitions. Word has length 1256
[2024-11-28 04:46:38,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:46:38,037 INFO  L471      AbstractCegarLoop]: Abstraction has 16067 states and 24099 transitions.
[2024-11-28 04:46:38,037 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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)
[2024-11-28 04:46:38,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 16067 states and 24099 transitions.
[2024-11-28 04:46:38,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1258
[2024-11-28 04:46:38,067 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:46:38,068 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:46:38,068 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-28 04:46:38,069 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:46:38,070 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:46:38,071 INFO  L85        PathProgramCache]: Analyzing trace with hash 1905350086, now seen corresponding path program 1 times
[2024-11-28 04:46:38,071 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:46:38,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917253796]
[2024-11-28 04:46:38,075 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:46:38,076 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:46:39,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:46:42,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:46:42,704 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:46:42,704 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917253796]
[2024-11-28 04:46:42,704 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917253796] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 04:46:42,705 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 04:46:42,705 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-28 04:46:42,706 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418940022]
[2024-11-28 04:46:42,706 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 04:46:42,709 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-28 04:46:42,709 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:46:42,711 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-28 04:46:42,711 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-28 04:46:42,712 INFO  L87              Difference]: Start difference. First operand 16067 states and 24099 transitions. Second operand  has 5 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 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)
[2024-11-28 04:46:43,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:46:43,934 INFO  L93              Difference]: Finished difference Result 46787 states and 70180 transitions.
[2024-11-28 04:46:43,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-28 04:46:43,935 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 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 1257
[2024-11-28 04:46:43,938 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:46:43,995 INFO  L225             Difference]: With dead ends: 46787
[2024-11-28 04:46:43,996 INFO  L226             Difference]: Without dead ends: 31418
[2024-11-28 04:46:44,011 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-28 04:46:44,014 INFO  L435           NwaCegarLoop]: 24091 mSDtfsCounter, 22824 mSDsluCounter, 71222 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22824 SdHoareTripleChecker+Valid, 95313 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 04:46:44,015 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [22824 Valid, 95313 Invalid, 22 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 04:46:44,055 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31418 states.
[2024-11-28 04:46:44,587 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31418 to 17865.
[2024-11-28 04:46:44,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17865 states, 17864 states have (on average 1.4999440214957456) internal successors, (26795), 17864 states have internal predecessors, (26795), 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)
[2024-11-28 04:46:44,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 26795 transitions.
[2024-11-28 04:46:44,638 INFO  L78                 Accepts]: Start accepts. Automaton has 17865 states and 26795 transitions. Word has length 1257
[2024-11-28 04:46:44,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:46:44,642 INFO  L471      AbstractCegarLoop]: Abstraction has 17865 states and 26795 transitions.
[2024-11-28 04:46:44,642 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 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)
[2024-11-28 04:46:44,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 17865 states and 26795 transitions.
[2024-11-28 04:46:45,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8929
[2024-11-28 04:46:45,237 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:46:45,241 INFO  L218           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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[2024-11-28 04:46:45,243 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-28 04:46:45,243 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:46:45,246 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:46:45,251 INFO  L85        PathProgramCache]: Analyzing trace with hash 239481270, now seen corresponding path program 1 times
[2024-11-28 04:46:45,251 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:46:45,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127094276]
[2024-11-28 04:46:45,255 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:46:45,256 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms