./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label20.c --full-output --architecture 32bit


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


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_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/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_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/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 32bit --witnessprinter.graph.data.programhash 45bf9d414a75e827d4f973e19b575c252ef631a691b24da068436d7dc51d31e5
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 02:30:23,078 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 02:30:23,149 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 02:30:23,155 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 02:30:23,156 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 02:30:23,207 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 02:30:23,209 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 02:30:23,210 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 02:30:23,210 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 02:30:23,211 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 02:30:23,212 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 02:30:23,212 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 02:30:23,212 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 02:30:23,213 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 02:30:23,213 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 02:30:23,214 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 02:30:23,214 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 02:30:23,214 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 02:30:23,214 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 02:30:23,215 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 02:30:23,216 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 02:30:23,216 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 02:30:23,216 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 02:30:23,216 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 02:30:23,216 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:30:23,216 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:30:23,217 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:30:23,217 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:30:23,218 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 02:30:23,218 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:30:23,218 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:30:23,218 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:30:23,218 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:30:23,219 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 02:30:23,219 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 02:30:23,220 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 02:30:23,220 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 02:30:23,220 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 02:30:23,220 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_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45bf9d414a75e827d4f973e19b575c252ef631a691b24da068436d7dc51d31e5
[2024-11-28 02:30:23,552 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 02:30:23,562 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 02:30:23,564 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 02:30:23,566 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 02:30:23,566 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 02:30:23,568 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem07_label20.c
[2024-11-28 02:30:27,457 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/data/438bc0e0c/c3b7414939ae4aeda6aa9cb02aff94bc/FLAGf357025f2
[2024-11-28 02:30:30,001 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 02:30:30,002 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/sv-benchmarks/c/eca-rers2012/Problem07_label20.c
[2024-11-28 02:30:30,163 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/data/438bc0e0c/c3b7414939ae4aeda6aa9cb02aff94bc/FLAGf357025f2
[2024-11-28 02:30:30,188 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/data/438bc0e0c/c3b7414939ae4aeda6aa9cb02aff94bc
[2024-11-28 02:30:30,191 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 02:30:30,193 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 02:30:30,195 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 02:30:30,195 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 02:30:30,200 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 02:30:30,201 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:30" (1/1) ...
[2024-11-28 02:30:30,202 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192c00a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:30, skipping insertion in model container
[2024-11-28 02:30:30,203 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:30" (1/1) ...
[2024-11-28 02:30:31,069 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 02:30:43,793 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_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/sv-benchmarks/c/eca-rers2012/Problem07_label20.c[2769329,2769342]
[2024-11-28 02:30:43,877 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:30:43,888 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 02:30:51,964 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_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/sv-benchmarks/c/eca-rers2012/Problem07_label20.c[2769329,2769342]
[2024-11-28 02:30:51,975 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:30:52,958 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 02:30:52,959 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52 WrapperNode
[2024-11-28 02:30:52,959 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 02:30:52,960 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 02:30:52,961 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 02:30:52,961 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 02:30:52,969 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:53,742 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:57,285 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83818
[2024-11-28 02:30:57,286 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 02:30:57,288 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 02:30:57,289 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 02:30:57,289 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 02:30:57,300 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:57,301 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:57,980 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:58,375 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 02:30:58,375 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:58,376 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:59,845 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:30:59,916 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:31:00,136 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:31:00,236 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:31:00,793 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:31:01,204 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 02:31:01,205 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 02:31:01,205 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 02:31:01,206 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 02:31:01,207 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (1/1) ...
[2024-11-28 02:31:01,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:31:01,230 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:31:01,251 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 02:31:01,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a3303d-09ef-4fc6-8bb0-70fa0da215a6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 02:31:01,293 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 02:31:01,293 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 02:31:01,293 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 02:31:01,294 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 02:31:01,527 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 02:31:01,530 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 02:32:00,317 INFO  L?                        ?]: Removed 10224 outVars from TransFormulas that were not future-live.
[2024-11-28 02:32:00,317 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 02:32:00,510 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 02:32:00,511 INFO  L312             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-28 02:32:00,511 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:00 BoogieIcfgContainer
[2024-11-28 02:32:00,511 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 02:32:00,517 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 02:32:00,518 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 02:32:00,527 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 02:32:00,527 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:30:30" (1/3) ...
[2024-11-28 02:32:00,529 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59994d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:00, skipping insertion in model container
[2024-11-28 02:32:00,531 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:52" (2/3) ...
[2024-11-28 02:32:00,532 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59994d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:00, skipping insertion in model container
[2024-11-28 02:32:00,532 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:00" (3/3) ...
[2024-11-28 02:32:00,533 INFO  L128   eAbstractionObserver]: Analyzing ICFG Problem07_label20.c
[2024-11-28 02:32:00,555 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 02:32:00,558 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Problem07_label20.c that has 1 procedures, 10257 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-28 02:32:00,850 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 02:32:00,870 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;@3ba90c22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 02:32:00,870 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 02:32:00,914 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 02:32:01,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10102
[2024-11-28 02:32:01,884 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:32:01,889 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, 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[2024-11-28 02:32:01,891 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:32:01,901 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:32:01,907 INFO  L85        PathProgramCache]: Analyzing trace with hash 355921881, now seen corresponding path program 1 times
[2024-11-28 02:32:01,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:32:01,917 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513686841]
[2024-11-28 02:32:01,922 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:32:01,923 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:32:06,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:32:35,076 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 02:32:35,077 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:32:35,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513686841]
[2024-11-28 02:32:35,078 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513686841] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:32:35,080 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:32:35,083 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-28 02:32:35,085 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354489818]
[2024-11-28 02:32:35,085 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:32:35,111 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:32:35,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:32:35,161 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:32:35,161 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-28 02:32:35,202 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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 02:33:26,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:33:26,430 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2024-11-28 02:33:26,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:33:26,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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 10101
[2024-11-28 02:33:26,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:33:26,592 INFO  L225             Difference]: With dead ends: 30705
[2024-11-28 02:33:26,592 INFO  L226             Difference]: Without dead ends: 20384
[2024-11-28 02:33:26,609 INFO  L434           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
[2024-11-28 02:33:26,615 INFO  L435           NwaCegarLoop]: 3749 mSDtfsCounter, 1312 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29786 mSolverCounterSat, 14106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 43892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 14106 IncrementalHoareTripleChecker+Valid, 29786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time
[2024-11-28 02:33:26,616 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 3802 Invalid, 43892 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [14106 Valid, 29786 Invalid, 0 Unknown, 0 Unchecked, 49.9s Time]
[2024-11-28 02:33:26,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2024-11-28 02:33:27,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2024-11-28 02:33:27,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.80954717166266) internal successors, (36884), 20383 states have internal predecessors, (36884), 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 02:33:27,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36884 transitions.
[2024-11-28 02:33:27,373 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36884 transitions. Word has length 10101
[2024-11-28 02:33:27,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:33:27,398 INFO  L471      AbstractCegarLoop]: Abstraction has 20384 states and 36884 transitions.
[2024-11-28 02:33:27,402 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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 02:33:27,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36884 transitions.
[2024-11-28 02:33:28,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10109
[2024-11-28 02:33:28,260 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:33:28,263 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:33:28,263 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-28 02:33:28,264 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:33:28,268 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:33:28,274 INFO  L85        PathProgramCache]: Analyzing trace with hash -124976330, now seen corresponding path program 1 times
[2024-11-28 02:33:28,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:33:28,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182665954]
[2024-11-28 02:33:28,279 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:33:28,280 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:33:29,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat