./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/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 e9da64380f47890617fc4ad472069c1bd7b8c79b168e9d1d2018b4ba0fbfd33e
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:38:42,407 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:38:42,514 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-23 23:38:42,521 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:38:42,523 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:38:42,561 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:38:42,563 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:38:42,564 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:38:42,564 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:38:42,565 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-23 23:38:42,565 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:38:42,566 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:38:42,566 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:38:42,566 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-23 23:38:42,567 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-23 23:38:42,567 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:38:42,568 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-23 23:38:42,569 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:38:42,569 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 23:38:42,570 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:38:42,570 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:38:42,570 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 23:38:42,571 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:38:42,571 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 23:38:42,571 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:38:42,571 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:38:42,571 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:38:42,571 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:38:42,572 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:38:42,572 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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/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 -> e9da64380f47890617fc4ad472069c1bd7b8c79b168e9d1d2018b4ba0fbfd33e
[2024-11-23 23:38:42,933 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:38:42,944 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:38:42,948 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:38:42,950 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-23 23:38:42,950 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-23 23:38:42,951 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
[2024-11-23 23:38:46,046 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/data/cb583fc4c/f13a861e2c71485583e94ea5217925c4/FLAG7b2502be9
[2024-11-23 23:38:46,584 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-23 23:38:46,585 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
[2024-11-23 23:38:46,612 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/data/cb583fc4c/f13a861e2c71485583e94ea5217925c4/FLAG7b2502be9
[2024-11-23 23:38:46,632 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/data/cb583fc4c/f13a861e2c71485583e94ea5217925c4
[2024-11-23 23:38:46,634 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:38:46,636 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:38:46,637 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:38:46,638 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:38:46,642 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:38:46,643 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:46" (1/1) ...
[2024-11-23 23:38:46,646 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285b4d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:46, skipping insertion in model container
[2024-11-23 23:38:46,647 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:46" (1/1) ...
[2024-11-23 23:38:46,749 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:38:46,970 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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c[1180,1193]
[2024-11-23 23:38:47,807 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:38:47,819 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-23 23:38:47,832 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_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c[1180,1193]
[2024-11-23 23:38:48,285 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:38:48,306 INFO  L204         MainTranslator]: Completed translation
[2024-11-23 23:38:48,307 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48 WrapperNode
[2024-11-23 23:38:48,308 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:38:48,309 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:38:48,309 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:38:48,310 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:38:48,319 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:48,442 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:50,683 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 15869
[2024-11-23 23:38:50,691 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:38:50,695 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:38:50,698 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:38:50,698 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:38:50,738 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:50,741 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:51,123 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:51,520 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].
[2024-11-23 23:38:51,520 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:51,520 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,069 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,136 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,372 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,467 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,536 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,821 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:38:52,823 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:38:52,823 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:38:52,823 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:38:52,824 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (1/1) ...
[2024-11-23 23:38:52,832 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:38:52,852 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:38:52,870 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:38:52,880 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:38:52,913 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:38:52,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 23:38:52,913 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:38:52,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:38:53,899 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-23 23:38:53,902 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:39:24,398 INFO  L?                        ?]: Removed 8642 outVars from TransFormulas that were not future-live.
[2024-11-23 23:39:24,398 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-23 23:39:24,538 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:39:24,540 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-23 23:39:24,541 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:24 BoogieIcfgContainer
[2024-11-23 23:39:24,541 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:39:24,543 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:39:24,543 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:39:24,552 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:39:24,553 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:38:46" (1/3) ...
[2024-11-23 23:39:24,553 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c999804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:24, skipping insertion in model container
[2024-11-23 23:39:24,554 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:48" (2/3) ...
[2024-11-23 23:39:24,554 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c999804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:24, skipping insertion in model container
[2024-11-23 23:39:24,554 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:24" (3/3) ...
[2024-11-23 23:39:24,556 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
[2024-11-23 23:39:24,573 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:39:24,575 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.reader_writer.2.prop1-func-interl.c that has 1 procedures, 5842 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 23:39:24,774 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:39:24,790 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;@18f3717a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:39:24,790 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 23:39:24,817 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5842 states, 5840 states have (on average 1.4998287671232877) internal successors, (8759), 5841 states have internal predecessors, (8759), 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)
[2024-11-23 23:39:24,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2024-11-23 23:39:24,844 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:39:24,845 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]
[2024-11-23 23:39:24,847 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:39:24,854 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:39:24,856 INFO  L85        PathProgramCache]: Analyzing trace with hash -254106457, now seen corresponding path program 1 times
[2024-11-23 23:39:24,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:39:24,865 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001886649]
[2024-11-23 23:39:24,866 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:39:24,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:39:25,340 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:39:26,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:39:26,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:39:26,686 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001886649]
[2024-11-23 23:39:26,687 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001886649] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:39:26,688 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:39:26,688 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:39:26,691 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666142035]
[2024-11-23 23:39:26,692 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:39:26,698 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:39:26,699 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:39:26,728 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:39:26,728 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:39:26,742 INFO  L87              Difference]: Start difference. First operand  has 5842 states, 5840 states have (on average 1.4998287671232877) internal successors, (8759), 5841 states have internal predecessors, (8759), 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 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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)
[2024-11-23 23:39:27,242 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:39:27,243 INFO  L93              Difference]: Finished difference Result 11505 states and 17253 transitions.
[2024-11-23 23:39:27,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 23:39:27,246 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 195
[2024-11-23 23:39:27,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:39:27,303 INFO  L225             Difference]: With dead ends: 11505
[2024-11-23 23:39:27,303 INFO  L226             Difference]: Without dead ends: 5841
[2024-11-23 23:39:27,323 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
[2024-11-23 23:39:27,329 INFO  L435           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17500 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26253 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:39:27,333 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26253 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:39:27,365 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5841 states.
[2024-11-23 23:39:27,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 5841.
[2024-11-23 23:39:27,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5841 states, 5840 states have (on average 1.499486301369863) internal successors, (8757), 5840 states have internal predecessors, (8757), 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)
[2024-11-23 23:39:27,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8757 transitions.
[2024-11-23 23:39:27,600 INFO  L78                 Accepts]: Start accepts. Automaton has 5841 states and 8757 transitions. Word has length 195
[2024-11-23 23:39:27,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:39:27,601 INFO  L471      AbstractCegarLoop]: Abstraction has 5841 states and 8757 transitions.
[2024-11-23 23:39:27,602 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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)
[2024-11-23 23:39:27,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 5841 states and 8757 transitions.
[2024-11-23 23:39:27,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2024-11-23 23:39:27,609 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:39:27,610 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]
[2024-11-23 23:39:27,610 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 23:39:27,610 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:39:27,611 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:39:27,611 INFO  L85        PathProgramCache]: Analyzing trace with hash 714330813, now seen corresponding path program 1 times
[2024-11-23 23:39:27,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:39:27,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985442987]
[2024-11-23 23:39:27,611 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:39:27,611 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:39:27,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:39:28,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:39:28,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:39:28,284 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985442987]
[2024-11-23 23:39:28,284 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985442987] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:39:28,284 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:39:28,285 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:39:28,285 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079518832]
[2024-11-23 23:39:28,285 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:39:28,286 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:39:28,289 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:39:28,289 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:39:28,290 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:39:28,290 INFO  L87              Difference]: Start difference. First operand 5841 states and 8757 transitions. Second operand  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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)
[2024-11-23 23:39:28,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:39:28,565 INFO  L93              Difference]: Finished difference Result 11506 states and 17251 transitions.
[2024-11-23 23:39:28,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 23:39:28,566 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 196
[2024-11-23 23:39:28,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:39:28,593 INFO  L225             Difference]: With dead ends: 11506
[2024-11-23 23:39:28,593 INFO  L226             Difference]: Without dead ends: 5843
[2024-11-23 23:39:28,600 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
[2024-11-23 23:39:28,602 INFO  L435           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17496 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26249 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:39:28,603 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26249 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:39:28,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5843 states.
[2024-11-23 23:39:28,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5843.
[2024-11-23 23:39:28,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5843 states, 5842 states have (on average 1.499315302978432) internal successors, (8759), 5842 states have internal predecessors, (8759), 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)
[2024-11-23 23:39:28,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8759 transitions.
[2024-11-23 23:39:28,760 INFO  L78                 Accepts]: Start accepts. Automaton has 5843 states and 8759 transitions. Word has length 196
[2024-11-23 23:39:28,761 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:39:28,762 INFO  L471      AbstractCegarLoop]: Abstraction has 5843 states and 8759 transitions.
[2024-11-23 23:39:28,762 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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)
[2024-11-23 23:39:28,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 5843 states and 8759 transitions.
[2024-11-23 23:39:28,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2024-11-23 23:39:28,766 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:39:28,766 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]
[2024-11-23 23:39:28,766 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 23:39:28,766 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:39:28,767 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:39:28,767 INFO  L85        PathProgramCache]: Analyzing trace with hash -428545984, now seen corresponding path program 1 times
[2024-11-23 23:39:28,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:39:28,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658005652]
[2024-11-23 23:39:28,772 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:39:28,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:39:28,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:39:29,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:39:29,383 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:39:29,384 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658005652]
[2024-11-23 23:39:29,384 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658005652] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:39:29,384 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:39:29,385 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:39:29,385 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208159695]
[2024-11-23 23:39:29,385 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:39:29,385 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:39:29,386 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:39:29,386 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:39:29,387 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:39:29,387 INFO  L87              Difference]: Start difference. First operand 5843 states and 8759 transitions. Second operand  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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)
[2024-11-23 23:39:29,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:39:29,663 INFO  L93              Difference]: Finished difference Result 11510 states and 17255 transitions.
[2024-11-23 23:39:29,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 23:39:29,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 197
[2024-11-23 23:39:29,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:39:29,688 INFO  L225             Difference]: With dead ends: 11510
[2024-11-23 23:39:29,689 INFO  L226             Difference]: Without dead ends: 5845
[2024-11-23 23:39:29,695 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
[2024-11-23 23:39:29,697 INFO  L435           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:39:29,698 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26243 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:39:29,711 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5845 states.
[2024-11-23 23:39:29,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5845.
[2024-11-23 23:39:29,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5845 states, 5844 states have (on average 1.4991444216290213) internal successors, (8761), 5844 states have internal predecessors, (8761), 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)
[2024-11-23 23:39:29,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8761 transitions.
[2024-11-23 23:39:29,857 INFO  L78                 Accepts]: Start accepts. Automaton has 5845 states and 8761 transitions. Word has length 197
[2024-11-23 23:39:29,857 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:39:29,857 INFO  L471      AbstractCegarLoop]: Abstraction has 5845 states and 8761 transitions.
[2024-11-23 23:39:29,857 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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)
[2024-11-23 23:39:29,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 5845 states and 8761 transitions.
[2024-11-23 23:39:29,861 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2024-11-23 23:39:29,861 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:39:29,861 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]
[2024-11-23 23:39:29,862 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-23 23:39:29,862 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:39:29,862 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:39:29,863 INFO  L85        PathProgramCache]: Analyzing trace with hash 508864420, now seen corresponding path program 1 times
[2024-11-23 23:39:29,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:39:29,866 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358620518]
[2024-11-23 23:39:29,866 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:39:29,866 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:39:29,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:39:30,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:39:30,635 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:39:30,635 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358620518]
[2024-11-23 23:39:30,635 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358620518] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:39:30,636 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:39:30,636 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:39:30,636 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505338687]
[2024-11-23 23:39:30,636 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:39:30,637 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:39:30,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:39:30,638 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:39:30,638 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:39:30,638 INFO  L87              Difference]: Start difference. First operand 5845 states and 8761 transitions. Second operand  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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)
[2024-11-23 23:39:31,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:39:31,047 INFO  L93              Difference]: Finished difference Result 16721 states and 25066 transitions.
[2024-11-23 23:39:31,048 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-23 23:39:31,048 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 198
[2024-11-23 23:39:31,049 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:39:31,102 INFO  L225             Difference]: With dead ends: 16721
[2024-11-23 23:39:31,102 INFO  L226             Difference]: Without dead ends: 11054
[2024-11-23 23:39:31,110 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:39:31,111 INFO  L435           NwaCegarLoop]: 8749 mSDtfsCounter, 7889 mSDsluCounter, 25976 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7889 SdHoareTripleChecker+Valid, 34725 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:39:31,113 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [7889 Valid, 34725 Invalid, 30 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:39:31,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11054 states.
[2024-11-23 23:39:31,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11054 to 6041.
[2024-11-23 23:39:31,285 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6041 states, 6040 states have (on average 1.4991721854304636) internal successors, (9055), 6040 states have internal predecessors, (9055), 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)
[2024-11-23 23:39:31,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6041 states to 6041 states and 9055 transitions.
[2024-11-23 23:39:31,315 INFO  L78                 Accepts]: Start accepts. Automaton has 6041 states and 9055 transitions. Word has length 198
[2024-11-23 23:39:31,316 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:39:31,316 INFO  L471      AbstractCegarLoop]: Abstraction has 6041 states and 9055 transitions.
[2024-11-23 23:39:31,316 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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)
[2024-11-23 23:39:31,316 INFO  L276                IsEmpty]: Start isEmpty. Operand 6041 states and 9055 transitions.
[2024-11-23 23:39:31,638 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3030
[2024-11-23 23:39:31,638 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:39:31,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:39:31,641 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-23 23:39:31,641 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:39:31,643 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:39:31,646 INFO  L85        PathProgramCache]: Analyzing trace with hash -1237480882, now seen corresponding path program 1 times
[2024-11-23 23:39:31,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:39:31,647 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585394929]
[2024-11-23 23:39:31,648 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:39:31,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:39:54,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:06,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:06,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:06,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585394929]
[2024-11-23 23:40:06,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585394929] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:40:06,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358224946]
[2024-11-23 23:40:06,333 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:06,333 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:06,333 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:06,338 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:06,340 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:40:10,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:10,872 INFO  L256         TraceCheckSpWp]: Trace formula consists of 12223 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:10,956 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:15,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:15,648 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:40:15,648 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358224946] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:40:15,648 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 23:40:15,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14
[2024-11-23 23:40:15,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127241023]
[2024-11-23 23:40:15,649 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:40:15,654 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-23 23:40:15,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:40:15,658 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-23 23:40:15,659 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182
[2024-11-23 23:40:15,665 INFO  L87              Difference]: Start difference. First operand 6041 states and 9055 transitions. Second operand  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 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)
[2024-11-23 23:40:16,595 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:40:16,595 INFO  L93              Difference]: Finished difference Result 16954 states and 25415 transitions.
[2024-11-23 23:40:16,596 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-23 23:40:16,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 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 3029
[2024-11-23 23:40:16,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:40:16,642 INFO  L225             Difference]: With dead ends: 16954
[2024-11-23 23:40:16,642 INFO  L226             Difference]: Without dead ends: 11287
[2024-11-23 23:40:16,652 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3039 GetRequests, 3024 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272
[2024-11-23 23:40:16,653 INFO  L435           NwaCegarLoop]: 16544 mSDtfsCounter, 11356 mSDsluCounter, 91434 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11356 SdHoareTripleChecker+Valid, 107978 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:40:16,654 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11356 Valid, 107978 Invalid, 140 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:40:16,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11287 states.
[2024-11-23 23:40:16,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 6078.
[2024-11-23 23:40:16,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6078 states, 6077 states have (on average 1.4990949481652132) internal successors, (9110), 6077 states have internal predecessors, (9110), 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)
[2024-11-23 23:40:16,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 9110 transitions.
[2024-11-23 23:40:16,857 INFO  L78                 Accepts]: Start accepts. Automaton has 6078 states and 9110 transitions. Word has length 3029
[2024-11-23 23:40:16,863 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:40:16,863 INFO  L471      AbstractCegarLoop]: Abstraction has 6078 states and 9110 transitions.
[2024-11-23 23:40:16,865 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 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)
[2024-11-23 23:40:16,865 INFO  L276                IsEmpty]: Start isEmpty. Operand 6078 states and 9110 transitions.
[2024-11-23 23:40:17,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3031
[2024-11-23 23:40:17,222 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:40:17,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-23 23:40:17,266 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 23:40:17,424 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:17,425 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:40:17,427 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:40:17,429 INFO  L85        PathProgramCache]: Analyzing trace with hash -2036838264, now seen corresponding path program 1 times
[2024-11-23 23:40:17,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:40:17,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085483771]
[2024-11-23 23:40:17,430 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:17,430 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:40:28,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:36,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:36,138 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:40:36,138 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085483771]
[2024-11-23 23:40:36,138 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085483771] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:40:36,138 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122699375]
[2024-11-23 23:40:36,139 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:40:36,139 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:40:36,139 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:40:36,145 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:40:36,148 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 23:40:45,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:40:45,176 INFO  L256         TraceCheckSpWp]: Trace formula consists of 12226 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-23 23:40:45,250 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:40:56,568 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:40:56,569 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:41:11,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:41:11,147 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122699375] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:41:11,147 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 23:41:11,147 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11
[2024-11-23 23:41:11,148 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157140622]
[2024-11-23 23:41:11,148 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:41:11,153 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 23:41:11,153 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:41:11,159 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 23:41:11,159 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:41:11,162 INFO  L87              Difference]: Start difference. First operand 6078 states and 9110 transitions. Second operand  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 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)
[2024-11-23 23:41:18,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:41:18,661 INFO  L93              Difference]: Finished difference Result 27190 states and 40760 transitions.
[2024-11-23 23:41:18,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-23 23:41:18,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 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 3030
[2024-11-23 23:41:18,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:41:18,696 INFO  L225             Difference]: With dead ends: 27190
[2024-11-23 23:41:18,696 INFO  L226             Difference]: Without dead ends: 11746
[2024-11-23 23:41:18,713 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6065 GetRequests, 6056 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:41:18,714 INFO  L435           NwaCegarLoop]: 8388 mSDtfsCounter, 23873 mSDsluCounter, 55855 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23873 SdHoareTripleChecker+Valid, 64243 SdHoareTripleChecker+Invalid, 6607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2024-11-23 23:41:18,714 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [23873 Valid, 64243 Invalid, 6607 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [856 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2024-11-23 23:41:18,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11746 states.
[2024-11-23 23:41:18,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 6272.
[2024-11-23 23:41:18,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6272 states, 6271 states have (on average 1.4989634826981342) internal successors, (9400), 6271 states have internal predecessors, (9400), 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)
[2024-11-23 23:41:18,862 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 9400 transitions.
[2024-11-23 23:41:18,863 INFO  L78                 Accepts]: Start accepts. Automaton has 6272 states and 9400 transitions. Word has length 3030
[2024-11-23 23:41:18,863 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:41:18,864 INFO  L471      AbstractCegarLoop]: Abstraction has 6272 states and 9400 transitions.
[2024-11-23 23:41:18,865 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 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)
[2024-11-23 23:41:18,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 6272 states and 9400 transitions.
[2024-11-23 23:41:18,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3032
[2024-11-23 23:41:18,931 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:41:18,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-23 23:41:18,990 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-23 23:41:19,133 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77691bcf-7967-4e84-bfc4-5dd5bf2b678a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-23 23:41:19,134 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:41:19,136 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:41:19,137 INFO  L85        PathProgramCache]: Analyzing trace with hash -1579399772, now seen corresponding path program 1 times
[2024-11-23 23:41:19,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:41:19,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729611793]
[2024-11-23 23:41:19,138 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:41:19,139 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:41:36,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:41:43,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:41:43,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:41:43,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729611793]
[2024-11-23 23:41:43,310 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729611793] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:41:43,310 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:41:43,310 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:41:43,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762894757]
[2024-11-23 23:41:43,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:41:43,313 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:41:43,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:41:43,316 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:41:43,317 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:41:43,318 INFO  L87              Difference]: Start difference. First operand 6272 states and 9400 transitions. Second operand  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 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)
[2024-11-23 23:41:53,105 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:41:53,105 INFO  L93              Difference]: Finished difference Result 16717 states and 25057 transitions.
[2024-11-23 23:41:53,106 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-23 23:41:53,106 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 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 3031
[2024-11-23 23:41:53,107 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:41:53,126 INFO  L225             Difference]: With dead ends: 16717
[2024-11-23 23:41:53,126 INFO  L226             Difference]: Without dead ends: 10817
[2024-11-23 23:41:53,130 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:41:53,131 INFO  L435           NwaCegarLoop]: 7035 mSDtfsCounter, 7069 mSDsluCounter, 28084 mSDsCounter, 0 mSdLazyCounter, 8820 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7069 SdHoareTripleChecker+Valid, 35119 SdHoareTripleChecker+Invalid, 8868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 8820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:41:53,132 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [7069 Valid, 35119 Invalid, 8868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 8820 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2024-11-23 23:41:53,143 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10817 states.
[2024-11-23 23:41:53,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10817 to 6294.
[2024-11-23 23:41:53,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6294 states, 6293 states have (on average 1.4983314794215796) internal successors, (9429), 6293 states have internal predecessors, (9429), 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)
[2024-11-23 23:41:53,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9429 transitions.
[2024-11-23 23:41:53,247 INFO  L78                 Accepts]: Start accepts. Automaton has 6294 states and 9429 transitions. Word has length 3031
[2024-11-23 23:41:53,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:41:53,248 INFO  L471      AbstractCegarLoop]: Abstraction has 6294 states and 9429 transitions.
[2024-11-23 23:41:53,249 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 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)
[2024-11-23 23:41:53,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 6294 states and 9429 transitions.
[2024-11-23 23:41:53,351 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3033
[2024-11-23 23:41:53,351 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:41:53,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-23 23:41:53,354 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-23 23:41:53,354 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:41:53,356 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:41:53,357 INFO  L85        PathProgramCache]: Analyzing trace with hash 1499305324, now seen corresponding path program 1 times
[2024-11-23 23:41:53,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:41:53,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68128758]
[2024-11-23 23:41:53,358 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:41:53,358 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:04,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:42:11,635 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:42:11,635 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:11,635 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68128758]
[2024-11-23 23:42:11,635 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68128758] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:42:11,635 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:42:11,636 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:42:11,636 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596278724]
[2024-11-23 23:42:11,636 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:42:11,639 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:42:11,640 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:11,643 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:42:11,644 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:42:11,645 INFO  L87              Difference]: Start difference. First operand 6294 states and 9429 transitions. Second operand  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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)
[2024-11-23 23:42:16,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:16,854 INFO  L93              Difference]: Finished difference Result 12194 states and 18273 transitions.
[2024-11-23 23:42:16,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 23:42:16,855 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 3032
[2024-11-23 23:42:16,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:16,870 INFO  L225             Difference]: With dead ends: 12194
[2024-11-23 23:42:16,870 INFO  L226             Difference]: Without dead ends: 6294
[2024-11-23 23:42:16,876 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:42:16,877 INFO  L435           NwaCegarLoop]: 6270 mSDtfsCounter, 7564 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 4985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7564 SdHoareTripleChecker+Valid, 12521 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:16,877 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [7564 Valid, 12521 Invalid, 4986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4985 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2024-11-23 23:42:16,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6294 states.
[2024-11-23 23:42:16,959 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 6294.
[2024-11-23 23:42:16,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6294 states, 6293 states have (on average 1.4981725726998252) internal successors, (9428), 6293 states have internal predecessors, (9428), 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)
[2024-11-23 23:42:16,979 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9428 transitions.
[2024-11-23 23:42:16,980 INFO  L78                 Accepts]: Start accepts. Automaton has 6294 states and 9428 transitions. Word has length 3032
[2024-11-23 23:42:16,982 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:16,982 INFO  L471      AbstractCegarLoop]: Abstraction has 6294 states and 9428 transitions.
[2024-11-23 23:42:16,983 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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)
[2024-11-23 23:42:16,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 6294 states and 9428 transitions.
[2024-11-23 23:42:17,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3034
[2024-11-23 23:42:17,064 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:42:17,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-23 23:42:17,068 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-23 23:42:17,069 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:17,070 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:17,072 INFO  L85        PathProgramCache]: Analyzing trace with hash 675288106, now seen corresponding path program 1 times
[2024-11-23 23:42:17,072 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:17,072 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688708463]
[2024-11-23 23:42:17,073 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:42:17,073 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:42:27,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:42:37,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:42:37,856 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:42:37,856 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688708463]
[2024-11-23 23:42:37,856 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688708463] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:42:37,856 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:42:37,856 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:42:37,857 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242630037]
[2024-11-23 23:42:37,857 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:42:37,858 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:42:37,858 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:42:37,861 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:42:37,861 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:42:37,862 INFO  L87              Difference]: Start difference. First operand 6294 states and 9428 transitions. Second operand  has 6 states, 6 states have (on average 505.5) internal successors, (3033), 6 states have internal predecessors, (3033), 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)
[2024-11-23 23:42:46,463 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:42:46,463 INFO  L93              Difference]: Finished difference Result 12851 states and 19256 transitions.
[2024-11-23 23:42:46,464 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-23 23:42:46,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 505.5) internal successors, (3033), 6 states have internal predecessors, (3033), 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 3033
[2024-11-23 23:42:46,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:42:46,479 INFO  L225             Difference]: With dead ends: 12851
[2024-11-23 23:42:46,479 INFO  L226             Difference]: Without dead ends: 6951
[2024-11-23 23:42:46,487 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:42:46,488 INFO  L435           NwaCegarLoop]: 6259 mSDtfsCounter, 8521 mSDsluCounter, 18756 mSDsCounter, 0 mSdLazyCounter, 9996 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8521 SdHoareTripleChecker+Valid, 25015 SdHoareTripleChecker+Invalid, 9997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:42:46,489 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8521 Valid, 25015 Invalid, 9997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9996 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2024-11-23 23:42:46,498 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6951 states.
[2024-11-23 23:42:46,567 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 6352.
[2024-11-23 23:42:46,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6352 states, 6351 states have (on average 1.4980318060148008) internal successors, (9514), 6351 states have internal predecessors, (9514), 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)
[2024-11-23 23:42:46,587 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 9514 transitions.
[2024-11-23 23:42:46,587 INFO  L78                 Accepts]: Start accepts. Automaton has 6352 states and 9514 transitions. Word has length 3033
[2024-11-23 23:42:46,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:42:46,589 INFO  L471      AbstractCegarLoop]: Abstraction has 6352 states and 9514 transitions.
[2024-11-23 23:42:46,590 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 505.5) internal successors, (3033), 6 states have internal predecessors, (3033), 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)
[2024-11-23 23:42:46,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 6352 states and 9514 transitions.
[2024-11-23 23:42:46,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3035
[2024-11-23 23:42:46,692 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 23:42:46,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-23 23:42:46,696 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-23 23:42:46,696 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 23:42:46,698 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:42:46,699 INFO  L85        PathProgramCache]: Analyzing trace with hash 1666672629, now seen corresponding path program 1 times
[2024-11-23 23:42:46,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:42:46,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507666502]
[2024-11-23 23:42:46,700 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:42:46,701 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:43:00,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:43:06,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:43:06,244 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:43:06,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507666502]
[2024-11-23 23:43:06,244 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507666502] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:43:06,244 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:43:06,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:43:06,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478060107]
[2024-11-23 23:43:06,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:43:06,246 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:43:06,246 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:43:06,247 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:43:06,247 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:43:06,248 INFO  L87              Difference]: Start difference. First operand 6352 states and 9514 transitions. Second operand  has 6 states, 6 states have (on average 505.6666666666667) internal successors, (3034), 6 states have internal predecessors, (3034), 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)
[2024-11-23 23:43:10,299 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []