./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 5b3157e4b8464481afb456e60ff52ac14c54dfdd3857541f78f205fb0f185301
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 23:05:52,962 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 23:05:53,076 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 23:05:53,087 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 23:05:53,091 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 23:05:53,128 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 23:05:53,128 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 23:05:53,129 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 23:05:53,135 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 23:05:53,140 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 23:05:53,142 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 23:05:53,143 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 23:05:53,143 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 23:05:53,145 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 23:05:53,146 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 23:05:53,146 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 23:05:53,147 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 23:05:53,147 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 23:05:53,148 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 23:05:53,148 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 23:05:53,149 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 23:05:53,149 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 23:05:53,150 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 23:05:53,151 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 23:05:53,151 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 23:05:53,152 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:05:53,152 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 23:05:53,153 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 23:05:53,153 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 23:05:53,154 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 23:05:53,155 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 23:05:53,156 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 23:05:53,156 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 23:05:53,156 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 23:05:53,157 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 23:05:53,157 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 23:05:53,157 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> 5b3157e4b8464481afb456e60ff52ac14c54dfdd3857541f78f205fb0f185301
[2023-11-06 23:05:53,474 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 23:05:53,496 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 23:05:53,499 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 23:05:53,500 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 23:05:53,501 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 23:05:53,503 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-06 23:05:56,679 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 23:05:57,214 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 23:05:57,215 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-06 23:05:57,253 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/data/e9849c105/f7dc35048a0f4e25b72a736f5caa2623/FLAG93748f2b4
[2023-11-06 23:05:57,271 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/data/e9849c105/f7dc35048a0f4e25b72a736f5caa2623
[2023-11-06 23:05:57,279 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 23:05:57,281 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 23:05:57,284 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 23:05:57,285 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 23:05:57,291 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 23:05:57,292 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:57" (1/1) ...
[2023-11-06 23:05:57,293 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33430ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:57, skipping insertion in model container
[2023-11-06 23:05:57,294 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:57" (1/1) ...
[2023-11-06 23:05:57,467 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 23:05:57,846 WARN  L240   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_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c[1176,1189]
[2023-11-06 23:05:58,775 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:05:58,787 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 23:05:58,806 WARN  L240   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_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop1-func-interl.c[1176,1189]
[2023-11-06 23:05:59,356 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:05:59,373 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 23:05:59,374 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59 WrapperNode
[2023-11-06 23:05:59,374 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 23:05:59,376 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 23:05:59,376 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 23:05:59,376 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 23:05:59,384 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:05:59,725 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:02,306 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23136
[2023-11-06 23:06:02,311 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 23:06:02,312 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 23:06:02,312 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 23:06:02,312 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 23:06:02,322 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:02,322 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:03,342 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:03,342 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:04,169 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:04,285 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:04,646 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:04,730 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:05,121 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 23:06:05,122 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 23:06:05,123 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 23:06:05,123 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 23:06:05,124 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (1/1) ...
[2023-11-06 23:06:05,135 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:06:05,146 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:05,162 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 23:06:05,165 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 23:06:05,193 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 23:06:05,194 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 23:06:05,195 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 23:06:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 23:06:06,590 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 23:06:06,592 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 23:06:25,078 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 23:06:25,139 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 23:06:25,139 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 23:06:25,148 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:25 BoogieIcfgContainer
[2023-11-06 23:06:25,148 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 23:06:25,154 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 23:06:25,154 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 23:06:25,158 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 23:06:25,158 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:57" (1/3) ...
[2023-11-06 23:06:25,160 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5687ff89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:25, skipping insertion in model container
[2023-11-06 23:06:25,160 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:59" (2/3) ...
[2023-11-06 23:06:25,161 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5687ff89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:25, skipping insertion in model container
[2023-11-06 23:06:25,163 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:25" (3/3) ...
[2023-11-06 23:06:25,165 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.6.prop1-func-interl.c
[2023-11-06 23:06:25,187 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 23:06:25,188 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 23:06:25,328 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 23:06:25,335 INFO  L357      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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@61b8111b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 23:06:25,335 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 23:06:25,356 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4871 states, 4869 states have (on average 1.6678989525569932) internal successors, (8121), 4870 states have internal predecessors, (8121), 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)
[2023-11-06 23:06:25,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2023-11-06 23:06:25,377 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:25,378 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:25,379 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:25,384 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:25,385 INFO  L85        PathProgramCache]: Analyzing trace with hash -1557420510, now seen corresponding path program 1 times
[2023-11-06 23:06:25,397 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:25,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519323421]
[2023-11-06 23:06:25,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:25,399 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:25,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:27,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:06:27,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:27,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519323421]
[2023-11-06 23:06:27,301 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519323421] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:27,302 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:27,302 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:06:27,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048857949]
[2023-11-06 23:06:27,305 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:27,315 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:06:27,316 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:27,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:06:27,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:06:27,372 INFO  L87              Difference]: Start difference. First operand  has 4871 states, 4869 states have (on average 1.6678989525569932) internal successors, (8121), 4870 states have internal predecessors, (8121), 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 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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)
[2023-11-06 23:06:27,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:27,776 INFO  L93              Difference]: Finished difference Result 9546 states and 15920 transitions.
[2023-11-06 23:06:27,777 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:06:27,779 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 231
[2023-11-06 23:06:27,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:27,829 INFO  L225             Difference]: With dead ends: 9546
[2023-11-06 23:06:27,829 INFO  L226             Difference]: Without dead ends: 4869
[2023-11-06 23:06:27,844 INFO  L412           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
[2023-11-06 23:06:27,850 INFO  L413           NwaCegarLoop]: 8113 mSDtfsCounter, 1 mSDsluCounter, 16220 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:27,851 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24333 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:06:27,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4869 states.
[2023-11-06 23:06:28,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4869.
[2023-11-06 23:06:28,030 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4869 states, 4868 states have (on average 1.6674198849630237) internal successors, (8117), 4868 states have internal predecessors, (8117), 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)
[2023-11-06 23:06:28,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 8117 transitions.
[2023-11-06 23:06:28,054 INFO  L78                 Accepts]: Start accepts. Automaton has 4869 states and 8117 transitions. Word has length 231
[2023-11-06 23:06:28,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:28,056 INFO  L495      AbstractCegarLoop]: Abstraction has 4869 states and 8117 transitions.
[2023-11-06 23:06:28,056 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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)
[2023-11-06 23:06:28,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 4869 states and 8117 transitions.
[2023-11-06 23:06:28,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2023-11-06 23:06:28,062 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:28,062 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:28,062 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 23:06:28,063 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:28,064 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:28,064 INFO  L85        PathProgramCache]: Analyzing trace with hash -1033669250, now seen corresponding path program 1 times
[2023-11-06 23:06:28,064 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:28,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041022516]
[2023-11-06 23:06:28,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:28,065 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:28,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:28,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:06:28,747 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:28,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041022516]
[2023-11-06 23:06:28,748 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041022516] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:28,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:28,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:06:28,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597912891]
[2023-11-06 23:06:28,749 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:28,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:06:28,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:28,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:06:28,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:06:28,755 INFO  L87              Difference]: Start difference. First operand 4869 states and 8117 transitions. Second operand  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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)
[2023-11-06 23:06:29,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:29,056 INFO  L93              Difference]: Finished difference Result 9547 states and 15916 transitions.
[2023-11-06 23:06:29,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:06:29,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 232
[2023-11-06 23:06:29,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:29,085 INFO  L225             Difference]: With dead ends: 9547
[2023-11-06 23:06:29,085 INFO  L226             Difference]: Without dead ends: 4872
[2023-11-06 23:06:29,099 INFO  L412           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
[2023-11-06 23:06:29,101 INFO  L413           NwaCegarLoop]: 8113 mSDtfsCounter, 1 mSDsluCounter, 16217 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24330 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:29,102 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24330 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:06:29,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4872 states.
[2023-11-06 23:06:29,197 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4871.
[2023-11-06 23:06:29,210 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4871 states, 4870 states have (on average 1.6671457905544147) internal successors, (8119), 4870 states have internal predecessors, (8119), 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)
[2023-11-06 23:06:29,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 8119 transitions.
[2023-11-06 23:06:29,233 INFO  L78                 Accepts]: Start accepts. Automaton has 4871 states and 8119 transitions. Word has length 232
[2023-11-06 23:06:29,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:29,235 INFO  L495      AbstractCegarLoop]: Abstraction has 4871 states and 8119 transitions.
[2023-11-06 23:06:29,235 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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)
[2023-11-06 23:06:29,235 INFO  L276                IsEmpty]: Start isEmpty. Operand 4871 states and 8119 transitions.
[2023-11-06 23:06:29,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2023-11-06 23:06:29,241 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:29,241 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:29,241 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 23:06:29,242 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:29,242 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:29,243 INFO  L85        PathProgramCache]: Analyzing trace with hash 2105560508, now seen corresponding path program 1 times
[2023-11-06 23:06:29,243 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:29,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897236348]
[2023-11-06 23:06:29,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:29,244 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:29,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:29,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:06:29,912 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:29,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897236348]
[2023-11-06 23:06:29,913 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897236348] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:29,913 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:29,913 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 23:06:29,913 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299842605]
[2023-11-06 23:06:29,913 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:29,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:06:29,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:29,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:06:29,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:06:29,915 INFO  L87              Difference]: Start difference. First operand 4871 states and 8119 transitions. Second operand  has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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)
[2023-11-06 23:06:30,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:30,305 INFO  L93              Difference]: Finished difference Result 14215 states and 23698 transitions.
[2023-11-06 23:06:30,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:06:30,306 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 233
[2023-11-06 23:06:30,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:30,354 INFO  L225             Difference]: With dead ends: 14215
[2023-11-06 23:06:30,354 INFO  L226             Difference]: Without dead ends: 9538
[2023-11-06 23:06:30,362 INFO  L412           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
[2023-11-06 23:06:30,364 INFO  L413           NwaCegarLoop]: 8344 mSDtfsCounter, 7779 mSDsluCounter, 16444 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7779 SdHoareTripleChecker+Valid, 24788 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:30,364 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7779 Valid, 24788 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:06:30,380 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9538 states.
[2023-11-06 23:06:30,486 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 4873.
[2023-11-06 23:06:30,498 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4873 states, 4872 states have (on average 1.666871921182266) internal successors, (8121), 4872 states have internal predecessors, (8121), 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)
[2023-11-06 23:06:30,519 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 8121 transitions.
[2023-11-06 23:06:30,519 INFO  L78                 Accepts]: Start accepts. Automaton has 4873 states and 8121 transitions. Word has length 233
[2023-11-06 23:06:30,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:30,520 INFO  L495      AbstractCegarLoop]: Abstraction has 4873 states and 8121 transitions.
[2023-11-06 23:06:30,521 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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)
[2023-11-06 23:06:30,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 4873 states and 8121 transitions.
[2023-11-06 23:06:30,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 235
[2023-11-06 23:06:30,524 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:30,525 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:30,525 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 23:06:30,525 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:30,525 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:30,526 INFO  L85        PathProgramCache]: Analyzing trace with hash -1847192860, now seen corresponding path program 1 times
[2023-11-06 23:06:30,526 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:30,526 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891660329]
[2023-11-06 23:06:30,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:30,526 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:30,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:31,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:06:31,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:31,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891660329]
[2023-11-06 23:06:31,268 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891660329] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:31,269 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:31,269 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:06:31,269 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475857717]
[2023-11-06 23:06:31,269 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:31,270 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 23:06:31,270 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:31,271 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 23:06:31,271 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:06:31,272 INFO  L87              Difference]: Start difference. First operand 4873 states and 8121 transitions. Second operand  has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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)
[2023-11-06 23:06:31,849 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:31,850 INFO  L93              Difference]: Finished difference Result 14362 states and 23939 transitions.
[2023-11-06 23:06:31,850 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 23:06:31,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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 234
[2023-11-06 23:06:31,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:31,902 INFO  L225             Difference]: With dead ends: 14362
[2023-11-06 23:06:31,903 INFO  L226             Difference]: Without dead ends: 9683
[2023-11-06 23:06:31,910 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 23:06:31,921 INFO  L413           NwaCegarLoop]: 8340 mSDtfsCounter, 31475 mSDsluCounter, 16216 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31475 SdHoareTripleChecker+Valid, 24556 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:31,922 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31475 Valid, 24556 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:06:31,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9683 states.
[2023-11-06 23:06:32,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9683 to 5014.
[2023-11-06 23:06:32,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5014 states, 5013 states have (on average 1.6668661480151605) internal successors, (8356), 5013 states have internal predecessors, (8356), 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)
[2023-11-06 23:06:32,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 8356 transitions.
[2023-11-06 23:06:32,081 INFO  L78                 Accepts]: Start accepts. Automaton has 5014 states and 8356 transitions. Word has length 234
[2023-11-06 23:06:32,082 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:32,082 INFO  L495      AbstractCegarLoop]: Abstraction has 5014 states and 8356 transitions.
[2023-11-06 23:06:32,082 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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)
[2023-11-06 23:06:32,082 INFO  L276                IsEmpty]: Start isEmpty. Operand 5014 states and 8356 transitions.
[2023-11-06 23:06:32,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3312
[2023-11-06 23:06:32,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:32,285 INFO  L195           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:06:32,285 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 23:06:32,285 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:32,286 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:32,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -930170596, now seen corresponding path program 1 times
[2023-11-06 23:06:32,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:32,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096664181]
[2023-11-06 23:06:32,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:32,290 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:32,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:06:32,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282426161]
[2023-11-06 23:06:32,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:32,827 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:32,827 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:32,831 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:06:32,839 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 23:06:39,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:39,567 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18677 conjuncts, 102 conjunts are in the unsatisfiable core
[2023-11-06 23:06:39,747 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:06:48,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:06:48,898 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:06:48,898 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:48,899 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096664181]
[2023-11-06 23:06:48,899 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:06:48,899 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282426161]
[2023-11-06 23:06:48,899 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [282426161] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:48,900 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:48,901 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2023-11-06 23:06:48,901 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628452377]
[2023-11-06 23:06:48,902 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:48,908 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2023-11-06 23:06:48,908 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:48,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2023-11-06 23:06:48,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482
[2023-11-06 23:06:48,917 INFO  L87              Difference]: Start difference. First operand 5014 states and 8356 transitions. Second operand  has 39 states, 39 states have (on average 84.8974358974359) internal successors, (3311), 39 states have internal predecessors, (3311), 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)
[2023-11-06 23:08:04,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:08:04,904 INFO  L93              Difference]: Finished difference Result 101292 states and 168803 transitions.
[2023-11-06 23:08:04,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 639 states. 
[2023-11-06 23:08:04,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 39 states, 39 states have (on average 84.8974358974359) internal successors, (3311), 39 states have internal predecessors, (3311), 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 3311
[2023-11-06 23:08:04,912 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:08:05,138 INFO  L225             Difference]: With dead ends: 101292
[2023-11-06 23:08:05,138 INFO  L226             Difference]: Without dead ends: 96613
[2023-11-06 23:08:05,260 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3984 GetRequests, 3311 SyntacticMatches, 0 SemanticMatches, 673 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221197 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=72844, Invalid=382106, Unknown=0, NotChecked=0, Total=454950
[2023-11-06 23:08:05,261 INFO  L413           NwaCegarLoop]: 15586 mSDtfsCounter, 1535785 mSDsluCounter, 558143 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535785 SdHoareTripleChecker+Valid, 573729 SdHoareTripleChecker+Invalid, 3757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.8s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-06 23:08:05,261 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1535785 Valid, 573729 Invalid, 3757 Unknown, 0 Unchecked, 3.8s Time], IncrementalHoareTripleChecker [266 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-06 23:08:05,343 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96613 states.
[2023-11-06 23:08:05,974 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96613 to 7521.
[2023-11-06 23:08:05,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7521 states, 7520 states have (on average 1.6658244680851064) internal successors, (12527), 7520 states have internal predecessors, (12527), 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)
[2023-11-06 23:08:06,013 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 12527 transitions.
[2023-11-06 23:08:06,014 INFO  L78                 Accepts]: Start accepts. Automaton has 7521 states and 12527 transitions. Word has length 3311
[2023-11-06 23:08:06,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:08:06,020 INFO  L495      AbstractCegarLoop]: Abstraction has 7521 states and 12527 transitions.
[2023-11-06 23:08:06,021 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 39 states, 39 states have (on average 84.8974358974359) internal successors, (3311), 39 states have internal predecessors, (3311), 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)
[2023-11-06 23:08:06,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 7521 states and 12527 transitions.
[2023-11-06 23:08:06,111 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3313
[2023-11-06 23:08:06,111 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:08:06,113 INFO  L195           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:08:06,194 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 23:08:06,327 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:08:06,328 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:08:06,328 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:08:06,329 INFO  L85        PathProgramCache]: Analyzing trace with hash 709482572, now seen corresponding path program 1 times
[2023-11-06 23:08:06,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:08:06,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341320242]
[2023-11-06 23:08:06,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:06,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:08:06,789 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:08:06,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550402075]
[2023-11-06 23:08:06,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:06,791 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:08:06,791 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:08:06,793 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:08:06,813 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 23:08:12,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:08:12,967 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-06 23:08:13,061 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:08:13,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:08:13,378 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:08:13,378 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:08:13,378 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341320242]
[2023-11-06 23:08:13,378 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:08:13,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550402075]
[2023-11-06 23:08:13,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [550402075] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:08:13,379 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:08:13,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-06 23:08:13,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971122297]
[2023-11-06 23:08:13,381 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:08:13,387 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-06 23:08:13,387 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:08:13,392 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-06 23:08:13,398 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-06 23:08:13,400 INFO  L87              Difference]: Start difference. First operand 7521 states and 12527 transitions. Second operand  has 7 states, 7 states have (on average 473.14285714285717) internal successors, (3312), 7 states have internal predecessors, (3312), 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)
[2023-11-06 23:08:14,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:08:14,222 INFO  L93              Difference]: Finished difference Result 19879 states and 33104 transitions.
[2023-11-06 23:08:14,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-06 23:08:14,223 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 473.14285714285717) internal successors, (3312), 7 states have internal predecessors, (3312), 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 3312
[2023-11-06 23:08:14,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:08:14,255 INFO  L225             Difference]: With dead ends: 19879
[2023-11-06 23:08:14,256 INFO  L226             Difference]: Without dead ends: 12552
[2023-11-06 23:08:14,267 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3321 GetRequests, 3309 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-06 23:08:14,269 INFO  L413           NwaCegarLoop]: 11702 mSDtfsCounter, 19977 mSDsluCounter, 43195 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19977 SdHoareTripleChecker+Valid, 54897 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-06 23:08:14,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19977 Valid, 54897 Invalid, 54 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-06 23:08:14,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12552 states.
[2023-11-06 23:08:14,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 7526.
[2023-11-06 23:08:14,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7526 states, 7525 states have (on average 1.6656478405315616) internal successors, (12534), 7525 states have internal predecessors, (12534), 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)
[2023-11-06 23:08:14,473 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 12534 transitions.
[2023-11-06 23:08:14,473 INFO  L78                 Accepts]: Start accepts. Automaton has 7526 states and 12534 transitions. Word has length 3312
[2023-11-06 23:08:14,476 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:08:14,477 INFO  L495      AbstractCegarLoop]: Abstraction has 7526 states and 12534 transitions.
[2023-11-06 23:08:14,478 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 473.14285714285717) internal successors, (3312), 7 states have internal predecessors, (3312), 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)
[2023-11-06 23:08:14,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 7526 states and 12534 transitions.
[2023-11-06 23:08:14,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3313
[2023-11-06 23:08:14,659 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:08:14,662 INFO  L195           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:08:14,733 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 23:08:14,875 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-06 23:08:14,875 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:08:14,876 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:08:14,878 INFO  L85        PathProgramCache]: Analyzing trace with hash 1947152690, now seen corresponding path program 1 times
[2023-11-06 23:08:14,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:08:14,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592462907]
[2023-11-06 23:08:14,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:14,880 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:08:15,324 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:08:15,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067213924]
[2023-11-06 23:08:15,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:15,326 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:08:15,326 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:08:15,327 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:08:15,503 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 23:08:21,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:08:22,128 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18680 conjuncts, 37 conjunts are in the unsatisfiable core
[2023-11-06 23:08:22,237 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:08:26,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:08:26,522 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:08:26,522 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:08:26,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592462907]
[2023-11-06 23:08:26,522 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:08:26,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067213924]
[2023-11-06 23:08:26,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067213924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:08:26,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:08:26,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-06 23:08:26,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925381544]
[2023-11-06 23:08:26,525 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:08:26,528 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-06 23:08:26,528 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:08:26,532 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-06 23:08:26,533 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182
[2023-11-06 23:08:26,534 INFO  L87              Difference]: Start difference. First operand 7526 states and 12534 transitions. Second operand  has 14 states, 14 states have (on average 236.57142857142858) internal successors, (3312), 14 states have internal predecessors, (3312), 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)
[2023-11-06 23:08:28,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:08:28,990 INFO  L93              Difference]: Finished difference Result 44897 states and 74732 transitions.
[2023-11-06 23:08:28,990 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. 
[2023-11-06 23:08:28,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 236.57142857142858) internal successors, (3312), 14 states have internal predecessors, (3312), 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 3312
[2023-11-06 23:08:28,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:08:29,059 INFO  L225             Difference]: With dead ends: 44897
[2023-11-06 23:08:29,060 INFO  L226             Difference]: Without dead ends: 37565
[2023-11-06 23:08:29,074 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3362 GetRequests, 3315 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=446, Invalid=1906, Unknown=0, NotChecked=0, Total=2352
[2023-11-06 23:08:29,075 INFO  L413           NwaCegarLoop]: 11996 mSDtfsCounter, 124996 mSDsluCounter, 108687 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124996 SdHoareTripleChecker+Valid, 120683 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-06 23:08:29,076 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [124996 Valid, 120683 Invalid, 359 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-06 23:08:29,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37565 states.
[2023-11-06 23:08:29,477 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37565 to 11924.
[2023-11-06 23:08:29,495 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11924 states, 11923 states have (on average 1.6656881657301015) internal successors, (19860), 11923 states have internal predecessors, (19860), 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)
[2023-11-06 23:08:29,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11924 states to 11924 states and 19860 transitions.
[2023-11-06 23:08:29,521 INFO  L78                 Accepts]: Start accepts. Automaton has 11924 states and 19860 transitions. Word has length 3312
[2023-11-06 23:08:29,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:08:29,525 INFO  L495      AbstractCegarLoop]: Abstraction has 11924 states and 19860 transitions.
[2023-11-06 23:08:29,526 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 236.57142857142858) internal successors, (3312), 14 states have internal predecessors, (3312), 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)
[2023-11-06 23:08:29,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 11924 states and 19860 transitions.
[2023-11-06 23:08:29,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3314
[2023-11-06 23:08:29,628 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:08:29,631 INFO  L195           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 23:08:29,734 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-06 23:08:29,850 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-06 23:08:29,851 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:08:29,851 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:08:29,853 INFO  L85        PathProgramCache]: Analyzing trace with hash 2072174360, now seen corresponding path program 1 times
[2023-11-06 23:08:29,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:08:29,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357266946]
[2023-11-06 23:08:29,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:29,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:08:30,293 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:08:30,293 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696050044]
[2023-11-06 23:08:30,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:08:30,295 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:08:30,295 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:08:30,296 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:08:30,323 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbef21f7-ef20-443d-b966-bdbe4e84f0c8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 23:08:36,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:08:36,371 INFO  L262         TraceCheckSpWp]: Trace formula consists of 18683 conjuncts, 56 conjunts are in the unsatisfiable core
[2023-11-06 23:08:36,479 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:08:43,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:08:43,315 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 23:08:54,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 23:08:54,949 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:08:54,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357266946]
[2023-11-06 23:08:54,949 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:08:54,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696050044]
[2023-11-06 23:08:54,950 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [696050044] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 23:08:54,950 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 23:08:54,952 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [22] total 38
[2023-11-06 23:08:54,952 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931439603]
[2023-11-06 23:08:54,952 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:08:54,955 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-06 23:08:54,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:08:54,958 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-06 23:08:54,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406
[2023-11-06 23:08:54,960 INFO  L87              Difference]: Start difference. First operand 11924 states and 19860 transitions. Second operand  has 18 states, 18 states have (on average 184.05555555555554) internal successors, (3313), 18 states have internal predecessors, (3313), 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)