./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label38.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 4fc63b2a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU --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 7493d306d44d9507b84459ae39e255658015ac06dd9b543cde90600f3bafda06
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-4fc63b2
[2024-10-31 22:13:26,401 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-31 22:13:26,476 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-31 22:13:26,483 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-31 22:13:26,483 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-31 22:13:26,526 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-31 22:13:26,526 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-31 22:13:26,527 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-31 22:13:26,528 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-31 22:13:26,529 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-31 22:13:26,530 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-31 22:13:26,531 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-31 22:13:26,532 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-31 22:13:26,532 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-31 22:13:26,533 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-31 22:13:26,533 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-31 22:13:26,537 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-31 22:13:26,537 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-31 22:13:26,537 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-31 22:13:26,538 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-31 22:13:26,538 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-31 22:13:26,539 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-31 22:13:26,542 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-31 22:13:26,543 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-31 22:13:26,543 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-31 22:13:26,543 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-31 22:13:26,544 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-31 22:13:26,544 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-31 22:13:26,544 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-31 22:13:26,545 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-31 22:13:26,545 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-31 22:13:26,548 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-31 22:13:26,548 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 22:13:26,548 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-31 22:13:26,549 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-31 22:13:26,549 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-31 22:13:26,549 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-31 22:13:26,550 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-31 22:13:26,550 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-31 22:13:26,550 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-31 22:13:26,551 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-31 22:13:26,552 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-31 22:13:26,552 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU
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 -> 7493d306d44d9507b84459ae39e255658015ac06dd9b543cde90600f3bafda06
[2024-10-31 22:13:26,824 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-31 22:13:26,847 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-31 22:13:26,851 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-31 22:13:26,852 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-31 22:13:26,855 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-31 22:13:26,857 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/eca-rers2012/Problem11_label38.c
Unable to find full path for "g++"
[2024-10-31 22:13:29,259 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-31 22:13:29,621 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-31 22:13:29,622 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/sv-benchmarks/c/eca-rers2012/Problem11_label38.c
[2024-10-31 22:13:29,640 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/data/3d16faf38/6ce957c3004642be8f9df3b175b04bf5/FLAGe580addf3
[2024-10-31 22:13:29,665 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/data/3d16faf38/6ce957c3004642be8f9df3b175b04bf5
[2024-10-31 22:13:29,671 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-31 22:13:29,673 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-31 22:13:29,678 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-31 22:13:29,678 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-31 22:13:29,686 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-31 22:13:29,687 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:29" (1/1) ...
[2024-10-31 22:13:29,690 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2cb0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:29, skipping insertion in model container
[2024-10-31 22:13:29,691 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:29" (1/1) ...
[2024-10-31 22:13:29,782 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-31 22:13:30,082 WARN  L251   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_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/sv-benchmarks/c/eca-rers2012/Problem11_label38.c[8652,8665]
[2024-10-31 22:13:30,447 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 22:13:30,461 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-31 22:13:30,534 WARN  L251   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_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/sv-benchmarks/c/eca-rers2012/Problem11_label38.c[8652,8665]
[2024-10-31 22:13:30,822 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 22:13:30,850 INFO  L204         MainTranslator]: Completed translation
[2024-10-31 22:13:30,850 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30 WrapperNode
[2024-10-31 22:13:30,851 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-31 22:13:30,852 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-31 22:13:30,853 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-31 22:13:30,853 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-31 22:13:30,862 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:30,909 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,052 INFO  L138                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000
[2024-10-31 22:13:31,052 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-31 22:13:31,053 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-31 22:13:31,054 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-31 22:13:31,054 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-31 22:13:31,069 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,069 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,082 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,137 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].
[2024-10-31 22:13:31,137 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,137 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,185 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,195 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,215 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,223 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,234 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-31 22:13:31,236 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-31 22:13:31,236 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-31 22:13:31,236 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-31 22:13:31,237 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (1/1) ...
[2024-10-31 22:13:31,245 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 22:13:31,259 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3
[2024-10-31 22:13:31,277 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-10-31 22:13:31,281 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-10-31 22:13:31,317 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-31 22:13:31,317 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-31 22:13:31,317 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-31 22:13:31,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-31 22:13:31,400 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-31 22:13:31,403 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-31 22:13:33,597 INFO  L?                        ?]: Removed 129 outVars from TransFormulas that were not future-live.
[2024-10-31 22:13:33,597 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-31 22:13:33,620 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-31 22:13:33,621 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-10-31 22:13:33,621 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:33 BoogieIcfgContainer
[2024-10-31 22:13:33,621 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-31 22:13:33,625 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-31 22:13:33,625 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-31 22:13:33,629 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-31 22:13:33,630 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:29" (1/3) ...
[2024-10-31 22:13:33,631 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77017450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:33, skipping insertion in model container
[2024-10-31 22:13:33,631 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:30" (2/3) ...
[2024-10-31 22:13:33,631 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77017450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:33, skipping insertion in model container
[2024-10-31 22:13:33,632 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:33" (3/3) ...
[2024-10-31 22:13:33,633 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem11_label38.c
[2024-10-31 22:13:33,658 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-31 22:13:33,658 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-31 22:13:33,755 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-31 22:13:33,762 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;@65a93e73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-31 22:13:33,763 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-31 22:13:33,769 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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)
[2024-10-31 22:13:33,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-10-31 22:13:33,784 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:33,785 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:33,786 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:33,792 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:33,792 INFO  L85        PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times
[2024-10-31 22:13:33,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:33,804 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411387181]
[2024-10-31 22:13:33,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:33,805 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:34,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:34,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 22:13:34,528 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:34,528 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411387181]
[2024-10-31 22:13:34,529 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411387181] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:34,530 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-31 22:13:34,530 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-31 22:13:34,533 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969021086]
[2024-10-31 22:13:34,534 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:34,542 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-31 22:13:34,544 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:34,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-31 22:13:34,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:34,584 INFO  L87              Difference]: Start difference. First operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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)
[2024-10-31 22:13:36,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:36,437 INFO  L93              Difference]: Finished difference Result 761 states and 1345 transitions.
[2024-10-31 22:13:36,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-31 22:13:36,440 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60
[2024-10-31 22:13:36,441 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:36,457 INFO  L225             Difference]: With dead ends: 761
[2024-10-31 22:13:36,457 INFO  L226             Difference]: Without dead ends: 413
[2024-10-31 22:13:36,462 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:36,466 INFO  L432           NwaCegarLoop]: 190 mSDtfsCounter, 168 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:36,468 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 222 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2024-10-31 22:13:36,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 413 states.
[2024-10-31 22:13:36,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413.
[2024-10-31 22:13:36,566 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 413 states, 412 states have (on average 1.453883495145631) internal successors, (599), 412 states have internal predecessors, (599), 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)
[2024-10-31 22:13:36,569 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 599 transitions.
[2024-10-31 22:13:36,571 INFO  L78                 Accepts]: Start accepts. Automaton has 413 states and 599 transitions. Word has length 60
[2024-10-31 22:13:36,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:36,576 INFO  L471      AbstractCegarLoop]: Abstraction has 413 states and 599 transitions.
[2024-10-31 22:13:36,577 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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)
[2024-10-31 22:13:36,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 413 states and 599 transitions.
[2024-10-31 22:13:36,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2024-10-31 22:13:36,585 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:36,587 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:36,587 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-31 22:13:36,588 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:36,588 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:36,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -432857926, now seen corresponding path program 1 times
[2024-10-31 22:13:36,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:36,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276317627]
[2024-10-31 22:13:36,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:36,590 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:36,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:36,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 22:13:36,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:36,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276317627]
[2024-10-31 22:13:36,935 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276317627] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:36,935 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-31 22:13:36,936 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-31 22:13:36,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647986553]
[2024-10-31 22:13:36,937 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:36,938 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-31 22:13:36,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:36,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-31 22:13:36,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:36,943 INFO  L87              Difference]: Start difference. First operand 413 states and 599 transitions. Second operand  has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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)
[2024-10-31 22:13:38,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:38,261 INFO  L93              Difference]: Finished difference Result 1211 states and 1763 transitions.
[2024-10-31 22:13:38,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-31 22:13:38,262 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 128
[2024-10-31 22:13:38,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:38,267 INFO  L225             Difference]: With dead ends: 1211
[2024-10-31 22:13:38,267 INFO  L226             Difference]: Without dead ends: 800
[2024-10-31 22:13:38,269 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:38,270 INFO  L432           NwaCegarLoop]: 101 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:38,271 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 120 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-10-31 22:13:38,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 800 states.
[2024-10-31 22:13:38,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789.
[2024-10-31 22:13:38,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 789 states, 788 states have (on average 1.3743654822335025) internal successors, (1083), 788 states have internal predecessors, (1083), 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)
[2024-10-31 22:13:38,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1083 transitions.
[2024-10-31 22:13:38,343 INFO  L78                 Accepts]: Start accepts. Automaton has 789 states and 1083 transitions. Word has length 128
[2024-10-31 22:13:38,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:38,344 INFO  L471      AbstractCegarLoop]: Abstraction has 789 states and 1083 transitions.
[2024-10-31 22:13:38,345 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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)
[2024-10-31 22:13:38,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 789 states and 1083 transitions.
[2024-10-31 22:13:38,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2024-10-31 22:13:38,348 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:38,348 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:38,349 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-31 22:13:38,349 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:38,350 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:38,350 INFO  L85        PathProgramCache]: Analyzing trace with hash -696650283, now seen corresponding path program 1 times
[2024-10-31 22:13:38,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:38,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128863762]
[2024-10-31 22:13:38,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:38,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:38,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:38,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 22:13:38,991 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:38,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128863762]
[2024-10-31 22:13:38,995 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128863762] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:38,995 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-31 22:13:38,995 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-31 22:13:38,996 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125763847]
[2024-10-31 22:13:38,996 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:38,997 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-31 22:13:38,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:39,000 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-31 22:13:39,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:39,001 INFO  L87              Difference]: Start difference. First operand 789 states and 1083 transitions. Second operand  has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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)
[2024-10-31 22:13:40,199 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:40,199 INFO  L93              Difference]: Finished difference Result 1945 states and 2612 transitions.
[2024-10-31 22:13:40,200 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-31 22:13:40,200 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130
[2024-10-31 22:13:40,201 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:40,206 INFO  L225             Difference]: With dead ends: 1945
[2024-10-31 22:13:40,206 INFO  L226             Difference]: Without dead ends: 1158
[2024-10-31 22:13:40,208 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:40,209 INFO  L432           NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:40,210 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-10-31 22:13:40,212 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1158 states.
[2024-10-31 22:13:40,239 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1157.
[2024-10-31 22:13:40,241 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1157 states, 1156 states have (on average 1.2707612456747406) internal successors, (1469), 1156 states have internal predecessors, (1469), 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)
[2024-10-31 22:13:40,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1469 transitions.
[2024-10-31 22:13:40,246 INFO  L78                 Accepts]: Start accepts. Automaton has 1157 states and 1469 transitions. Word has length 130
[2024-10-31 22:13:40,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:40,247 INFO  L471      AbstractCegarLoop]: Abstraction has 1157 states and 1469 transitions.
[2024-10-31 22:13:40,248 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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)
[2024-10-31 22:13:40,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 1157 states and 1469 transitions.
[2024-10-31 22:13:40,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2024-10-31 22:13:40,252 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:40,253 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:40,253 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-31 22:13:40,253 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:40,254 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:40,254 INFO  L85        PathProgramCache]: Analyzing trace with hash -1739360937, now seen corresponding path program 1 times
[2024-10-31 22:13:40,254 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:40,255 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547348071]
[2024-10-31 22:13:40,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:40,255 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:40,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:40,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 22:13:40,637 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:40,638 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547348071]
[2024-10-31 22:13:40,638 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547348071] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:40,638 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-31 22:13:40,638 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-31 22:13:40,639 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692782944]
[2024-10-31 22:13:40,639 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:40,640 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-31 22:13:40,641 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:40,641 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-31 22:13:40,642 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-31 22:13:40,642 INFO  L87              Difference]: Start difference. First operand 1157 states and 1469 transitions. Second operand  has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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)
[2024-10-31 22:13:43,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:43,036 INFO  L93              Difference]: Finished difference Result 3445 states and 4564 transitions.
[2024-10-31 22:13:43,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-31 22:13:43,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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 187
[2024-10-31 22:13:43,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:43,046 INFO  L225             Difference]: With dead ends: 3445
[2024-10-31 22:13:43,046 INFO  L226             Difference]: Without dead ends: 2474
[2024-10-31 22:13:43,048 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-31 22:13:43,049 INFO  L432           NwaCegarLoop]: 41 mSDtfsCounter, 334 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:43,050 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 87 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2024-10-31 22:13:43,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2474 states.
[2024-10-31 22:13:43,098 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2473.
[2024-10-31 22:13:43,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2473 states, 2472 states have (on average 1.286812297734628) internal successors, (3181), 2472 states have internal predecessors, (3181), 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)
[2024-10-31 22:13:43,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3181 transitions.
[2024-10-31 22:13:43,111 INFO  L78                 Accepts]: Start accepts. Automaton has 2473 states and 3181 transitions. Word has length 187
[2024-10-31 22:13:43,112 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:43,112 INFO  L471      AbstractCegarLoop]: Abstraction has 2473 states and 3181 transitions.
[2024-10-31 22:13:43,113 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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)
[2024-10-31 22:13:43,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 2473 states and 3181 transitions.
[2024-10-31 22:13:43,117 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 243
[2024-10-31 22:13:43,117 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:43,118 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:43,118 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-10-31 22:13:43,118 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:43,119 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:43,119 INFO  L85        PathProgramCache]: Analyzing trace with hash -1823294191, now seen corresponding path program 1 times
[2024-10-31 22:13:43,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:43,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233977524]
[2024-10-31 22:13:43,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:43,120 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:43,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:43,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 184 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2024-10-31 22:13:43,638 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:43,638 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233977524]
[2024-10-31 22:13:43,639 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233977524] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:43,639 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-31 22:13:43,639 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-31 22:13:43,639 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695605831]
[2024-10-31 22:13:43,640 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:43,640 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-31 22:13:43,641 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:43,641 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-31 22:13:43,642 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:43,642 INFO  L87              Difference]: Start difference. First operand 2473 states and 3181 transitions. Second operand  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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)
[2024-10-31 22:13:44,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:44,921 INFO  L93              Difference]: Finished difference Result 5690 states and 7506 transitions.
[2024-10-31 22:13:44,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-31 22:13:44,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 242
[2024-10-31 22:13:44,923 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:44,934 INFO  L225             Difference]: With dead ends: 5690
[2024-10-31 22:13:44,935 INFO  L226             Difference]: Without dead ends: 3587
[2024-10-31 22:13:44,938 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-31 22:13:44,940 INFO  L432           NwaCegarLoop]: 372 mSDtfsCounter, 137 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:44,941 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 393 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-10-31 22:13:44,945 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3587 states.
[2024-10-31 22:13:45,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3578.
[2024-10-31 22:13:45,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3578 states, 3577 states have (on average 1.25020967291026) internal successors, (4472), 3577 states have internal predecessors, (4472), 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)
[2024-10-31 22:13:45,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4472 transitions.
[2024-10-31 22:13:45,033 INFO  L78                 Accepts]: Start accepts. Automaton has 3578 states and 4472 transitions. Word has length 242
[2024-10-31 22:13:45,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:45,034 INFO  L471      AbstractCegarLoop]: Abstraction has 3578 states and 4472 transitions.
[2024-10-31 22:13:45,034 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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)
[2024-10-31 22:13:45,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 3578 states and 4472 transitions.
[2024-10-31 22:13:45,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 249
[2024-10-31 22:13:45,065 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:45,066 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:45,066 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-10-31 22:13:45,066 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:45,067 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:45,067 INFO  L85        PathProgramCache]: Analyzing trace with hash 1037701986, now seen corresponding path program 1 times
[2024-10-31 22:13:45,068 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:45,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884893371]
[2024-10-31 22:13:45,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:45,069 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:45,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:46,017 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 91 proven. 24 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-10-31 22:13:46,018 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:46,018 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884893371]
[2024-10-31 22:13:46,018 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884893371] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-31 22:13:46,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280177691]
[2024-10-31 22:13:46,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:46,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-31 22:13:46,021 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3
[2024-10-31 22:13:46,024 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-31 22:13:46,026 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-31 22:13:46,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:46,221 INFO  L255         TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-10-31 22:13:46,241 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 22:13:46,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-10-31 22:13:46,444 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-10-31 22:13:46,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280177691] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-31 22:13:46,446 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-10-31 22:13:46,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2024-10-31 22:13:46,448 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819214572]
[2024-10-31 22:13:46,448 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-31 22:13:46,452 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-31 22:13:46,453 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-31 22:13:46,453 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-31 22:13:46,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2024-10-31 22:13:46,454 INFO  L87              Difference]: Start difference. First operand 3578 states and 4472 transitions. Second operand  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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)
[2024-10-31 22:13:47,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 22:13:47,801 INFO  L93              Difference]: Finished difference Result 9363 states and 11939 transitions.
[2024-10-31 22:13:47,802 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-31 22:13:47,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 248
[2024-10-31 22:13:47,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 22:13:47,826 INFO  L225             Difference]: With dead ends: 9363
[2024-10-31 22:13:47,827 INFO  L226             Difference]: Without dead ends: 6155
[2024-10-31 22:13:47,831 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2024-10-31 22:13:47,832 INFO  L432           NwaCegarLoop]: 129 mSDtfsCounter, 151 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-10-31 22:13:47,833 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 145 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-10-31 22:13:47,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6155 states.
[2024-10-31 22:13:47,958 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 6155.
[2024-10-31 22:13:47,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6155 states, 6154 states have (on average 1.2351316217094572) internal successors, (7601), 6154 states have internal predecessors, (7601), 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)
[2024-10-31 22:13:47,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 7601 transitions.
[2024-10-31 22:13:47,989 INFO  L78                 Accepts]: Start accepts. Automaton has 6155 states and 7601 transitions. Word has length 248
[2024-10-31 22:13:47,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 22:13:47,990 INFO  L471      AbstractCegarLoop]: Abstraction has 6155 states and 7601 transitions.
[2024-10-31 22:13:47,990 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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)
[2024-10-31 22:13:47,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 6155 states and 7601 transitions.
[2024-10-31 22:13:47,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 280
[2024-10-31 22:13:47,998 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 22:13:47,999 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 22:13:48,025 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-10-31 22:13:48,199 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-31 22:13:48,200 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 22:13:48,200 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 22:13:48,200 INFO  L85        PathProgramCache]: Analyzing trace with hash 855336243, now seen corresponding path program 1 times
[2024-10-31 22:13:48,200 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-31 22:13:48,201 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815920288]
[2024-10-31 22:13:48,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:48,201 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-31 22:13:48,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:49,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2024-10-31 22:13:49,177 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-31 22:13:49,177 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815920288]
[2024-10-31 22:13:49,177 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815920288] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-31 22:13:49,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160486556]
[2024-10-31 22:13:49,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 22:13:49,179 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-31 22:13:49,180 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3
[2024-10-31 22:13:49,181 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-31 22:13:49,183 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd50dbd-14f9-4eac-9f8b-2cffbbd28cdf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-31 22:13:49,340 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 22:13:49,342 INFO  L255         TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-10-31 22:13:49,347 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 22:13:49,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2024-10-31 22:13:49,962 INFO  L311         TraceCheckSpWp]: Computing backward predicates...