./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 323fae397368398226fccbcbe05a857ac909870544eb6a35d0c9428fb7851420
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 00:02:24,747 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-24 00:02:24,867 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-24 00:02:24,875 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 00:02:24,876 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 00:02:24,921 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 00:02:24,922 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 00:02:24,922 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 00:02:24,923 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 00:02:24,923 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-24 00:02:24,923 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 00:02:24,924 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 00:02:24,924 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 00:02:24,924 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-24 00:02:24,924 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-24 00:02:24,925 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 00:02:24,925 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-24 00:02:24,925 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-24 00:02:24,925 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-24 00:02:24,925 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-24 00:02:24,926 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-24 00:02:24,926 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:02:24,927 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-24 00:02:24,927 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:02:24,927 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 00:02:24,927 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-24 00:02:24,928 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:02:24,928 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-24 00:02:24,928 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:02:24,928 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 00:02:24,928 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 00:02:24,928 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 00:02:24,929 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 00:02:24,930 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 00:02:24,930 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_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 323fae397368398226fccbcbe05a857ac909870544eb6a35d0c9428fb7851420
[2024-11-24 00:02:25,261 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 00:02:25,271 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 00:02:25,274 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 00:02:25,275 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-24 00:02:25,276 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-24 00:02:25,277 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c
[2024-11-24 00:02:28,584 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/data/28cc7cc95/f11c2f8b05ed4fa6adaffca9ecfb0b07/FLAG534a15c30
[2024-11-24 00:02:29,742 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-24 00:02:29,743 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c
[2024-11-24 00:02:29,850 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/data/28cc7cc95/f11c2f8b05ed4fa6adaffca9ecfb0b07/FLAG534a15c30
[2024-11-24 00:02:29,879 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/data/28cc7cc95/f11c2f8b05ed4fa6adaffca9ecfb0b07
[2024-11-24 00:02:29,882 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 00:02:29,885 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 00:02:29,886 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 00:02:29,886 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 00:02:29,894 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 00:02:29,897 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:29" (1/1) ...
[2024-11-24 00:02:29,898 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1113653e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:29, skipping insertion in model container
[2024-11-24 00:02:29,899 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:02:29" (1/1) ...
[2024-11-24 00:02:30,162 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-24 00:02:30,599 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_7dd9de3b-5fea-4662-b8f8-2b245869083a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c[1181,1194]
[2024-11-24 00:02:32,466 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:02:32,485 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-24 00:02:32,499 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_7dd9de3b-5fea-4662-b8f8-2b245869083a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c[1181,1194]
[2024-11-24 00:02:33,829 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:02:33,847 INFO  L204         MainTranslator]: Completed translation
[2024-11-24 00:02:33,848 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33 WrapperNode
[2024-11-24 00:02:33,848 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 00:02:33,849 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 00:02:33,850 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 00:02:33,850 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 00:02:33,864 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:34,220 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:38,557 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42547
[2024-11-24 00:02:38,557 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 00:02:38,560 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 00:02:38,560 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 00:02:38,561 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 00:02:38,579 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:38,579 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:39,329 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:39,895 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].
[2024-11-24 00:02:39,896 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:39,896 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:41,424 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:41,500 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:41,666 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:41,929 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:42,078 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:42,725 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 00:02:42,727 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 00:02:42,728 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 00:02:42,728 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-24 00:02:42,729 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (1/1) ...
[2024-11-24 00:02:42,739 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:02:42,755 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:02:42,772 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 00:02:42,778 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd9de3b-5fea-4662-b8f8-2b245869083a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 00:02:42,807 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 00:02:42,807 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 00:02:42,807 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 00:02:42,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 00:02:45,672 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-24 00:02:45,674 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 00:05:37,265 INFO  L?                        ?]: Removed 25083 outVars from TransFormulas that were not future-live.
[2024-11-24 00:05:37,265 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-24 00:05:37,402 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 00:05:37,402 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-24 00:05:37,402 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:05:37 BoogieIcfgContainer
[2024-11-24 00:05:37,402 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 00:05:37,405 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 00:05:37,405 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 00:05:37,410 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-24 00:05:37,410 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:02:29" (1/3) ...
[2024-11-24 00:05:37,411 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32e504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:05:37, skipping insertion in model container
[2024-11-24 00:05:37,411 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:02:33" (2/3) ...
[2024-11-24 00:05:37,412 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32e504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:05:37, skipping insertion in model container
[2024-11-24 00:05:37,412 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:05:37" (3/3) ...
[2024-11-24 00:05:37,413 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c
[2024-11-24 00:05:37,429 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 00:05:37,432 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c that has 1 procedures, 13322 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-24 00:05:37,709 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 00:05:37,726 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;@5ba583fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 00:05:37,727 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-24 00:05:37,766 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13322 states, 13320 states have (on average 1.499924924924925) internal successors, (19979), 13321 states have internal predecessors, (19979), 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)
[2024-11-24 00:05:37,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 798
[2024-11-24 00:05:37,832 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 00:05:37,834 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:05:37,836 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:05:37,842 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:05:37,843 INFO  L85        PathProgramCache]: Analyzing trace with hash -1262066230, now seen corresponding path program 1 times
[2024-11-24 00:05:37,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:05:37,852 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415156042]
[2024-11-24 00:05:37,852 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:05:37,853 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:05:40,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:05:44,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:05:44,536 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:05:44,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415156042]
[2024-11-24 00:05:44,537 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415156042] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:05:44,539 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:05:44,540 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 00:05:44,541 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536652040]
[2024-11-24 00:05:44,542 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:05:44,550 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 00:05:44,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:05:44,576 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 00:05:44,577 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:44,613 INFO  L87              Difference]: Start difference. First operand  has 13322 states, 13320 states have (on average 1.499924924924925) internal successors, (19979), 13321 states have internal predecessors, (19979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 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)
[2024-11-24 00:05:45,499 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:05:45,500 INFO  L93              Difference]: Finished difference Result 26429 states and 39639 transitions.
[2024-11-24 00:05:45,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 00:05:45,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 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 797
[2024-11-24 00:05:45,512 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:05:45,594 INFO  L225             Difference]: With dead ends: 26429
[2024-11-24 00:05:45,594 INFO  L226             Difference]: Without dead ends: 13321
[2024-11-24 00:05:45,619 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:45,623 INFO  L435           NwaCegarLoop]: 19973 mSDtfsCounter, 0 mSDsluCounter, 39940 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59913 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 00:05:45,627 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59913 Invalid, 11 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 00:05:45,668 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13321 states.
[2024-11-24 00:05:46,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13321 to 13321.
[2024-11-24 00:05:46,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13321 states, 13320 states have (on average 1.4997747747747747) internal successors, (19977), 13320 states have internal predecessors, (19977), 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)
[2024-11-24 00:05:46,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 19977 transitions.
[2024-11-24 00:05:46,121 INFO  L78                 Accepts]: Start accepts. Automaton has 13321 states and 19977 transitions. Word has length 797
[2024-11-24 00:05:46,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:05:46,124 INFO  L471      AbstractCegarLoop]: Abstraction has 13321 states and 19977 transitions.
[2024-11-24 00:05:46,126 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 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)
[2024-11-24 00:05:46,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 13321 states and 19977 transitions.
[2024-11-24 00:05:46,155 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 799
[2024-11-24 00:05:46,155 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 00:05:46,156 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:05:46,156 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 00:05:46,156 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:05:46,157 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:05:46,159 INFO  L85        PathProgramCache]: Analyzing trace with hash -467647165, now seen corresponding path program 1 times
[2024-11-24 00:05:46,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:05:46,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399168056]
[2024-11-24 00:05:46,159 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:05:46,160 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:05:46,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:05:48,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:05:48,789 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:05:48,789 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399168056]
[2024-11-24 00:05:48,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399168056] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:05:48,790 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:05:48,790 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 00:05:48,790 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777613497]
[2024-11-24 00:05:48,790 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:05:48,793 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 00:05:48,793 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:05:48,795 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 00:05:48,795 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:48,796 INFO  L87              Difference]: Start difference. First operand 13321 states and 19977 transitions. Second operand  has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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)
[2024-11-24 00:05:49,734 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:05:49,734 INFO  L93              Difference]: Finished difference Result 26430 states and 39637 transitions.
[2024-11-24 00:05:49,735 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 00:05:49,735 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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 798
[2024-11-24 00:05:49,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:05:49,837 INFO  L225             Difference]: With dead ends: 26430
[2024-11-24 00:05:49,837 INFO  L226             Difference]: Without dead ends: 13323
[2024-11-24 00:05:49,869 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:49,872 INFO  L435           NwaCegarLoop]: 19973 mSDtfsCounter, 0 mSDsluCounter, 39936 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59909 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 00:05:49,872 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59909 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 00:05:49,895 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13323 states.
[2024-11-24 00:05:50,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13323 to 13323.
[2024-11-24 00:05:50,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13323 states, 13322 states have (on average 1.4996997447830656) internal successors, (19979), 13322 states have internal predecessors, (19979), 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)
[2024-11-24 00:05:50,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 19979 transitions.
[2024-11-24 00:05:50,685 INFO  L78                 Accepts]: Start accepts. Automaton has 13323 states and 19979 transitions. Word has length 798
[2024-11-24 00:05:50,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:05:50,690 INFO  L471      AbstractCegarLoop]: Abstraction has 13323 states and 19979 transitions.
[2024-11-24 00:05:50,690 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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)
[2024-11-24 00:05:50,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 13323 states and 19979 transitions.
[2024-11-24 00:05:50,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 800
[2024-11-24 00:05:50,738 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 00:05:50,738 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:05:50,739 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 00:05:50,739 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:05:50,744 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:05:50,744 INFO  L85        PathProgramCache]: Analyzing trace with hash 1584846275, now seen corresponding path program 1 times
[2024-11-24 00:05:50,744 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:05:50,744 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502723985]
[2024-11-24 00:05:50,745 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:05:50,745 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:05:51,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:05:54,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:05:54,286 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:05:54,286 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502723985]
[2024-11-24 00:05:54,286 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502723985] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:05:54,286 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:05:54,287 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 00:05:54,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808765757]
[2024-11-24 00:05:54,287 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:05:54,297 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 00:05:54,297 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:05:54,298 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 00:05:54,299 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:54,299 INFO  L87              Difference]: Start difference. First operand 13323 states and 19979 transitions. Second operand  has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 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)
[2024-11-24 00:05:54,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:05:54,988 INFO  L93              Difference]: Finished difference Result 26434 states and 39641 transitions.
[2024-11-24 00:05:54,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 00:05:54,989 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 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 799
[2024-11-24 00:05:54,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:05:55,030 INFO  L225             Difference]: With dead ends: 26434
[2024-11-24 00:05:55,031 INFO  L226             Difference]: Without dead ends: 13325
[2024-11-24 00:05:55,045 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 00:05:55,047 INFO  L435           NwaCegarLoop]: 19973 mSDtfsCounter, 0 mSDsluCounter, 39936 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59909 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 00:05:55,048 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59909 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 00:05:55,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13325 states.
[2024-11-24 00:05:55,418 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13325 to 13325.
[2024-11-24 00:05:55,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13325 states, 13324 states have (on average 1.4996247373161213) internal successors, (19981), 13324 states have internal predecessors, (19981), 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)
[2024-11-24 00:05:55,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13325 states to 13325 states and 19981 transitions.
[2024-11-24 00:05:55,504 INFO  L78                 Accepts]: Start accepts. Automaton has 13325 states and 19981 transitions. Word has length 799
[2024-11-24 00:05:55,508 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:05:55,509 INFO  L471      AbstractCegarLoop]: Abstraction has 13325 states and 19981 transitions.
[2024-11-24 00:05:55,509 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 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)
[2024-11-24 00:05:55,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 13325 states and 19981 transitions.
[2024-11-24 00:05:55,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 801
[2024-11-24 00:05:55,528 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 00:05:55,528 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:05:55,528 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 00:05:55,529 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:05:55,529 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:05:55,530 INFO  L85        PathProgramCache]: Analyzing trace with hash -1500481078, now seen corresponding path program 1 times
[2024-11-24 00:05:55,530 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:05:55,530 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175049840]
[2024-11-24 00:05:55,531 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:05:55,535 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:05:56,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:05:57,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:05:57,843 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:05:57,843 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175049840]
[2024-11-24 00:05:57,843 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175049840] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:05:57,843 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:05:57,844 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-24 00:05:57,844 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899493457]
[2024-11-24 00:05:57,844 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:05:57,846 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:05:57,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:05:57,847 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:05:57,847 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-24 00:05:57,848 INFO  L87              Difference]: Start difference. First operand 13325 states and 19981 transitions. Second operand  has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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)
[2024-11-24 00:05:59,100 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 00:05:59,101 INFO  L93              Difference]: Finished difference Result 39533 states and 59284 transitions.
[2024-11-24 00:05:59,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-24 00:05:59,102 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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 800
[2024-11-24 00:05:59,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 00:05:59,164 INFO  L225             Difference]: With dead ends: 39533
[2024-11-24 00:05:59,165 INFO  L226             Difference]: Without dead ends: 26422
[2024-11-24 00:05:59,188 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-24 00:05:59,190 INFO  L435           NwaCegarLoop]: 19971 mSDtfsCounter, 19167 mSDsluCounter, 79553 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19167 SdHoareTripleChecker+Valid, 99524 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 00:05:59,192 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [19167 Valid, 99524 Invalid, 33 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 00:05:59,464 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26422 states.
[2024-11-24 00:05:59,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26422 to 14689.
[2024-11-24 00:05:59,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14689 states, 14688 states have (on average 1.4996595860566448) internal successors, (22027), 14688 states have internal predecessors, (22027), 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)
[2024-11-24 00:05:59,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14689 states to 14689 states and 22027 transitions.
[2024-11-24 00:05:59,829 INFO  L78                 Accepts]: Start accepts. Automaton has 14689 states and 22027 transitions. Word has length 800
[2024-11-24 00:05:59,830 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 00:05:59,830 INFO  L471      AbstractCegarLoop]: Abstraction has 14689 states and 22027 transitions.
[2024-11-24 00:05:59,831 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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)
[2024-11-24 00:05:59,831 INFO  L276                IsEmpty]: Start isEmpty. Operand 14689 states and 22027 transitions.
[2024-11-24 00:06:00,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7354
[2024-11-24 00:06:00,247 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 00:06:00,251 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:06:00,251 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-24 00:06:00,251 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 00:06:00,254 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:06:00,259 INFO  L85        PathProgramCache]: Analyzing trace with hash -140995577, now seen corresponding path program 1 times
[2024-11-24 00:06:00,259 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:06:00,259 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515620936]
[2024-11-24 00:06:00,262 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:06:00,262 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:06:33,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat