./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.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_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/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_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/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_c9de488e-d49b-499d-8718-60f182b952f9/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 349f6e8de04e0c564229fd00bd54f19f7f90edab4d122098d9fddb960fbdb5ba
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:03:25,250 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:03:25,374 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:03:25,389 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:03:25,390 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:03:25,429 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:03:25,430 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:03:25,431 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:03:25,437 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:03:25,442 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:03:25,444 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:03:25,444 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:03:25,445 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:03:25,447 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:03:25,447 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:03:25,448 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:03:25,448 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:03:25,449 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:03:25,449 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:03:25,450 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:03:25,450 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:03:25,451 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:03:25,452 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:03:25,452 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:03:25,453 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:03:25,453 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:03:25,454 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:03:25,454 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:03:25,455 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:03:25,455 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:03:25,456 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:03:25,457 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:03:25,457 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:03:25,457 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:03:25,457 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:03:25,458 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:03:25,458 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_c9de488e-d49b-499d-8718-60f182b952f9/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_c9de488e-d49b-499d-8718-60f182b952f9/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 -> 349f6e8de04e0c564229fd00bd54f19f7f90edab4d122098d9fddb960fbdb5ba
[2023-11-06 22:03:25,784 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:03:25,820 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:03:25,823 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:03:25,825 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:03:25,825 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:03:25,827 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.prop1-func-interl.c
[2023-11-06 22:03:28,983 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:03:29,658 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:03:29,658 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.prop1-func-interl.c
[2023-11-06 22:03:29,719 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/data/2720878c9/1b18f2ffb7a84c3d97a885096d08ff30/FLAGc43ded9be
[2023-11-06 22:03:29,737 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/data/2720878c9/1b18f2ffb7a84c3d97a885096d08ff30
[2023-11-06 22:03:29,742 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:03:29,743 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:03:29,771 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:03:29,772 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:03:29,778 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:03:29,778 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:29" (1/1) ...
[2023-11-06 22:03:29,780 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6751c5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:29, skipping insertion in model container
[2023-11-06 22:03:29,780 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:29" (1/1) ...
[2023-11-06 22:03:29,980 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:03:30,345 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_c9de488e-d49b-499d-8718-60f182b952f9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.prop1-func-interl.c[1173,1186]
[2023-11-06 22:03:32,241 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:03:32,256 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:03:32,270 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_c9de488e-d49b-499d-8718-60f182b952f9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.7.prop1-func-interl.c[1173,1186]
[2023-11-06 22:03:33,845 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:03:33,871 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:03:33,872 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33 WrapperNode
[2023-11-06 22:03:33,872 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:03:33,873 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:03:33,873 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:03:33,874 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:03:33,881 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:34,212 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:39,954 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52620
[2023-11-06 22:03:39,955 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:03:39,955 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:03:39,956 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:03:39,956 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:03:39,966 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:39,966 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:41,518 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:41,518 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:42,820 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:43,431 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:43,894 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:44,039 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:44,865 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:03:44,867 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:03:44,867 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:03:44,867 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:03:44,868 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (1/1) ...
[2023-11-06 22:03:44,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:03:44,901 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:03:44,930 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:03:44,946 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:03:44,981 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:03:44,982 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:03:44,984 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:03:44,984 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:03:47,292 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:03:47,295 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:04:21,442 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:04:21,512 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:04:21,512 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:04:21,526 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:21 BoogieIcfgContainer
[2023-11-06 22:04:21,526 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:04:21,530 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:04:21,530 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:04:21,545 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:04:21,548 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:29" (1/3) ...
[2023-11-06 22:04:21,549 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd1ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:21, skipping insertion in model container
[2023-11-06 22:04:21,550 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:33" (2/3) ...
[2023-11-06 22:04:21,550 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd1ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:21, skipping insertion in model container
[2023-11-06 22:04:21,550 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:21" (3/3) ...
[2023-11-06 22:04:21,552 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rether.7.prop1-func-interl.c
[2023-11-06 22:04:21,570 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:04:21,570 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:04:21,833 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:04:21,840 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;@5192a611, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:04:21,841 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:04:21,884 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11856 states, 11854 states have (on average 1.6666104268601316) internal successors, (19756), 11855 states have internal predecessors, (19756), 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 22:04:21,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 554
[2023-11-06 22:04:21,930 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:04:21,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:21,932 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:04:21,937 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:04:21,938 INFO  L85        PathProgramCache]: Analyzing trace with hash 1766448107, now seen corresponding path program 1 times
[2023-11-06 22:04:21,948 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:04:21,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977526488]
[2023-11-06 22:04:21,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:21,949 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:04:22,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:04:25,722 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 22:04:25,723 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:04:25,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977526488]
[2023-11-06 22:04:25,724 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977526488] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:04:25,724 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:04:25,725 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:04:25,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675126277]
[2023-11-06 22:04:25,727 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:04:25,735 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:04:25,735 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:04:25,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:04:25,781 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:04:25,818 INFO  L87              Difference]: Start difference. First operand  has 11856 states, 11854 states have (on average 1.6666104268601316) internal successors, (19756), 11855 states have internal predecessors, (19756), 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 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 22:04:42,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:04:42,689 INFO  L93              Difference]: Finished difference Result 34596 states and 57658 transitions.
[2023-11-06 22:04:42,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 22:04:42,699 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 553
[2023-11-06 22:04:42,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:04:42,894 INFO  L225             Difference]: With dead ends: 34596
[2023-11-06 22:04:42,894 INFO  L226             Difference]: Without dead ends: 23222
[2023-11-06 22:04:42,916 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-06 22:04:42,920 INFO  L413           NwaCegarLoop]: 15107 mSDtfsCounter, 57100 mSDsluCounter, 30207 mSDsCounter, 0 mSdLazyCounter, 13936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57100 SdHoareTripleChecker+Valid, 45314 SdHoareTripleChecker+Invalid, 13937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time
[2023-11-06 22:04:42,921 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [57100 Valid, 45314 Invalid, 13937 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 13936 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time]
[2023-11-06 22:04:42,993 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23222 states.
[2023-11-06 22:04:43,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 12188.
[2023-11-06 22:04:43,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12188 states, 12187 states have (on average 1.6663657996225487) internal successors, (20308), 12187 states have internal predecessors, (20308), 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 22:04:43,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 20308 transitions.
[2023-11-06 22:04:43,456 INFO  L78                 Accepts]: Start accepts. Automaton has 12188 states and 20308 transitions. Word has length 553
[2023-11-06 22:04:43,458 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:04:43,459 INFO  L495      AbstractCegarLoop]: Abstraction has 12188 states and 20308 transitions.
[2023-11-06 22:04:43,460 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 22:04:43,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 12188 states and 20308 transitions.
[2023-11-06 22:04:43,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 555
[2023-11-06 22:04:43,474 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:04:43,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:43,475 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 22:04:43,475 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:04:43,476 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:04:43,476 INFO  L85        PathProgramCache]: Analyzing trace with hash 1786477035, now seen corresponding path program 1 times
[2023-11-06 22:04:43,477 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:04:43,477 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590946616]
[2023-11-06 22:04:43,477 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:43,477 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:04:43,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:04:45,827 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 22:04:45,827 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:04:45,828 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590946616]
[2023-11-06 22:04:45,828 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590946616] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:04:45,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:04:45,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:04:45,829 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49449360]
[2023-11-06 22:04:45,830 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:04:45,833 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:04:45,833 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:04:45,834 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:04:45,834 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:04:45,835 INFO  L87              Difference]: Start difference. First operand 12188 states and 20308 transitions. Second operand  has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 22:04:46,187 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:04:46,187 INFO  L93              Difference]: Finished difference Result 12192 states and 20312 transitions.
[2023-11-06 22:04:46,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:04:46,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 554
[2023-11-06 22:04:46,190 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:04:46,213 INFO  L225             Difference]: With dead ends: 12192
[2023-11-06 22:04:46,213 INFO  L226             Difference]: Without dead ends: 12190
[2023-11-06 22:04:46,222 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 22:04:46,225 INFO  L413           NwaCegarLoop]: 19748 mSDtfsCounter, 1 mSDsluCounter, 39490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59238 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:04:46,226 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59238 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:04:46,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12190 states.
[2023-11-06 22:04:46,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12190 to 12190.
[2023-11-06 22:04:46,466 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12190 states, 12189 states have (on average 1.666256460743293) internal successors, (20310), 12189 states have internal predecessors, (20310), 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 22:04:46,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 20310 transitions.
[2023-11-06 22:04:46,512 INFO  L78                 Accepts]: Start accepts. Automaton has 12190 states and 20310 transitions. Word has length 554
[2023-11-06 22:04:46,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:04:46,513 INFO  L495      AbstractCegarLoop]: Abstraction has 12190 states and 20310 transitions.
[2023-11-06 22:04:46,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 22:04:46,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 12190 states and 20310 transitions.
[2023-11-06 22:04:46,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 556
[2023-11-06 22:04:46,526 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:04:46,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:46,527 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 22:04:46,527 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:04:46,528 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:04:46,528 INFO  L85        PathProgramCache]: Analyzing trace with hash -451998945, now seen corresponding path program 1 times
[2023-11-06 22:04:46,529 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:04:46,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010927956]
[2023-11-06 22:04:46,530 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:46,530 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:04:46,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:04:47,782 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 22:04:47,782 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:04:47,783 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010927956]
[2023-11-06 22:04:47,783 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010927956] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:04:47,783 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:04:47,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:04:47,784 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333840807]
[2023-11-06 22:04:47,784 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:04:47,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:04:47,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:04:47,786 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:04:47,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:04:47,787 INFO  L87              Difference]: Start difference. First operand 12190 states and 20310 transitions. Second operand  has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 22:04:48,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:04:48,169 INFO  L93              Difference]: Finished difference Result 23565 states and 39264 transitions.
[2023-11-06 22:04:48,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:04:48,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 555
[2023-11-06 22:04:48,172 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:04:48,199 INFO  L225             Difference]: With dead ends: 23565
[2023-11-06 22:04:48,199 INFO  L226             Difference]: Without dead ends: 12193
[2023-11-06 22:04:48,217 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 22:04:48,222 INFO  L413           NwaCegarLoop]: 19748 mSDtfsCounter, 1 mSDsluCounter, 39487 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59235 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 22:04:48,224 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59235 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:04:48,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12193 states.
[2023-11-06 22:04:48,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12193 to 12192.
[2023-11-06 22:04:48,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12192 states, 12191 states have (on average 1.6661471577393159) internal successors, (20312), 12191 states have internal predecessors, (20312), 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 22:04:48,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 20312 transitions.
[2023-11-06 22:04:48,627 INFO  L78                 Accepts]: Start accepts. Automaton has 12192 states and 20312 transitions. Word has length 555
[2023-11-06 22:04:48,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:04:48,630 INFO  L495      AbstractCegarLoop]: Abstraction has 12192 states and 20312 transitions.
[2023-11-06 22:04:48,631 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 22:04:48,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 12192 states and 20312 transitions.
[2023-11-06 22:04:48,647 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 557
[2023-11-06 22:04:48,647 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:04:48,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:48,648 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 22:04:48,649 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:04:48,651 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:04:48,651 INFO  L85        PathProgramCache]: Analyzing trace with hash -1339282045, now seen corresponding path program 1 times
[2023-11-06 22:04:48,651 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:04:48,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575605413]
[2023-11-06 22:04:48,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:48,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:04:48,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:04:50,115 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 22:04:50,116 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:04:50,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575605413]
[2023-11-06 22:04:50,116 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575605413] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:04:50,116 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:04:50,117 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:04:50,117 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080749008]
[2023-11-06 22:04:50,117 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:04:50,118 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:04:50,118 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:04:50,119 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:04:50,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:04:50,120 INFO  L87              Difference]: Start difference. First operand 12192 states and 20312 transitions. Second operand  has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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 22:04:50,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:04:50,900 INFO  L93              Difference]: Finished difference Result 34930 states and 58201 transitions.
[2023-11-06 22:04:50,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:04:50,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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 556
[2023-11-06 22:04:50,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:04:50,945 INFO  L225             Difference]: With dead ends: 34930
[2023-11-06 22:04:50,945 INFO  L226             Difference]: Without dead ends: 23556
[2023-11-06 22:04:50,964 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 22:04:50,972 INFO  L413           NwaCegarLoop]: 20300 mSDtfsCounter, 76572 mSDsluCounter, 39486 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76572 SdHoareTripleChecker+Valid, 59786 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:04:50,973 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [76572 Valid, 59786 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:04:51,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23556 states.
[2023-11-06 22:04:51,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 12194.
[2023-11-06 22:04:51,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12194 states, 12193 states have (on average 1.6660378905929631) internal successors, (20314), 12193 states have internal predecessors, (20314), 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 22:04:51,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12194 states to 12194 states and 20314 transitions.
[2023-11-06 22:04:51,396 INFO  L78                 Accepts]: Start accepts. Automaton has 12194 states and 20314 transitions. Word has length 556
[2023-11-06 22:04:51,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:04:51,397 INFO  L495      AbstractCegarLoop]: Abstraction has 12194 states and 20314 transitions.
[2023-11-06 22:04:51,398 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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 22:04:51,398 INFO  L276                IsEmpty]: Start isEmpty. Operand 12194 states and 20314 transitions.
[2023-11-06 22:04:52,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8132
[2023-11-06 22:04:52,404 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:04:52,409 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-06 22:04:52,410 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 22:04:52,410 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:04:52,411 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:04:52,415 INFO  L85        PathProgramCache]: Analyzing trace with hash -597937398, now seen corresponding path program 1 times
[2023-11-06 22:04:52,415 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:04:52,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672928524]
[2023-11-06 22:04:52,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:52,419 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:04:53,890 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:04:53,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179621000]
[2023-11-06 22:04:53,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:04:53,893 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:04:53,893 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:04:53,897 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:04:53,924 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 22:05:07,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:05:07,319 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36626 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-06 22:05:07,555 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:05:07,917 INFO  L134       CoverageAnalysis]: Checked inductivity of 230 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:05:07,917 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:05:07,918 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:05:07,918 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672928524]
[2023-11-06 22:05:07,918 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:05:07,918 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179621000]
[2023-11-06 22:05:07,918 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179621000] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:05:07,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:05:07,923 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-06 22:05:07,923 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529716629]
[2023-11-06 22:05:07,924 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:05:08,054 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-06 22:05:08,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:05:08,069 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-06 22:05:08,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-06 22:05:08,074 INFO  L87              Difference]: Start difference. First operand 12194 states and 20314 transitions. Second operand  has 3 states, 3 states have (on average 2710.3333333333335) internal successors, (8131), 3 states have internal predecessors, (8131), 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 22:05:08,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:05:08,347 INFO  L93              Difference]: Finished difference Result 23573 states and 39274 transitions.
[2023-11-06 22:05:08,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-06 22:05:08,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2710.3333333333335) internal successors, (8131), 3 states have internal predecessors, (8131), 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 8131
[2023-11-06 22:05:08,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:05:08,378 INFO  L225             Difference]: With dead ends: 23573
[2023-11-06 22:05:08,378 INFO  L226             Difference]: Without dead ends: 12199
[2023-11-06 22:05:08,394 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8130 GetRequests, 8129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-06 22:05:08,395 INFO  L413           NwaCegarLoop]: 19749 mSDtfsCounter, 6 mSDsluCounter, 19743 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39492 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:05:08,395 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39492 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:05:08,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12199 states.
[2023-11-06 22:05:08,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 12195.
[2023-11-06 22:05:08,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12195 states, 12194 states have (on average 1.6659832704608823) internal successors, (20315), 12194 states have internal predecessors, (20315), 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 22:05:08,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 20315 transitions.
[2023-11-06 22:05:08,640 INFO  L78                 Accepts]: Start accepts. Automaton has 12195 states and 20315 transitions. Word has length 8131
[2023-11-06 22:05:08,645 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:05:08,646 INFO  L495      AbstractCegarLoop]: Abstraction has 12195 states and 20315 transitions.
[2023-11-06 22:05:08,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2710.3333333333335) internal successors, (8131), 3 states have internal predecessors, (8131), 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 22:05:08,651 INFO  L276                IsEmpty]: Start isEmpty. Operand 12195 states and 20315 transitions.
[2023-11-06 22:05:09,467 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8132
[2023-11-06 22:05:09,467 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:05:09,473 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-06 22:05:09,609 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 22:05:09,689 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:05:09,689 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:05:09,690 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:05:09,695 INFO  L85        PathProgramCache]: Analyzing trace with hash 126283772, now seen corresponding path program 1 times
[2023-11-06 22:05:09,696 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:05:09,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434758075]
[2023-11-06 22:05:09,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:05:09,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:05:11,313 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:05:11,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175780806]
[2023-11-06 22:05:11,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:05:11,317 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:05:11,317 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:05:11,318 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:05:11,340 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 22:05:23,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:05:23,923 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36627 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-06 22:05:24,105 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:06:06,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 230 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 22:06:06,985 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:06:06,985 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:06:06,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434758075]
[2023-11-06 22:06:06,985 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:06:06,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175780806]
[2023-11-06 22:06:06,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175780806] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:06:06,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:06:06,988 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:06:06,989 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551232672]
[2023-11-06 22:06:06,989 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:06:06,999 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:06:06,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:06:07,008 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:06:07,009 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:06:07,012 INFO  L87              Difference]: Start difference. First operand 12195 states and 20315 transitions. Second operand  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 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 22:06:23,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:06:23,419 INFO  L93              Difference]: Finished difference Result 34609 states and 57661 transitions.
[2023-11-06 22:06:23,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:06:23,421 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 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 8131
[2023-11-06 22:06:23,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:06:23,492 INFO  L225             Difference]: With dead ends: 34609
[2023-11-06 22:06:23,492 INFO  L226             Difference]: Without dead ends: 23234
[2023-11-06 22:06:23,514 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8132 GetRequests, 8127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-06 22:06:23,516 INFO  L413           NwaCegarLoop]: 16038 mSDtfsCounter, 11050 mSDsluCounter, 46239 mSDsCounter, 0 mSdLazyCounter, 16739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11050 SdHoareTripleChecker+Valid, 62277 SdHoareTripleChecker+Invalid, 16739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time
[2023-11-06 22:06:23,516 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11050 Valid, 62277 Invalid, 16739 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16739 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time]
[2023-11-06 22:06:23,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23234 states.
[2023-11-06 22:06:24,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23234 to 23224.
[2023-11-06 22:06:24,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23224 states, 23223 states have (on average 1.6661499375618998) internal successors, (38693), 23223 states have internal predecessors, (38693), 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 22:06:24,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23224 states to 23224 states and 38693 transitions.
[2023-11-06 22:06:24,189 INFO  L78                 Accepts]: Start accepts. Automaton has 23224 states and 38693 transitions. Word has length 8131
[2023-11-06 22:06:24,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:06:24,203 INFO  L495      AbstractCegarLoop]: Abstraction has 23224 states and 38693 transitions.
[2023-11-06 22:06:24,205 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 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 22:06:24,205 INFO  L276                IsEmpty]: Start isEmpty. Operand 23224 states and 38693 transitions.
[2023-11-06 22:06:24,650 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8133
[2023-11-06 22:06:24,650 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:06:24,656 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-06 22:06:24,781 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 22:06:24,876 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-06 22:06:24,876 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:06:24,877 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:06:24,880 INFO  L85        PathProgramCache]: Analyzing trace with hash 327907024, now seen corresponding path program 1 times
[2023-11-06 22:06:24,880 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:06:24,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430661763]
[2023-11-06 22:06:24,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:24,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:06:26,357 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:06:26,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408872559]
[2023-11-06 22:06:26,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:26,361 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:06:26,361 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:06:26,362 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:06:26,375 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9de488e-d49b-499d-8718-60f182b952f9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 22:06:38,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:06:39,045 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36630 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-06 22:06:39,199 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:06:40,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 230 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-11-06 22:06:40,316 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:06:40,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 230 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-11-06 22:06:40,557 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:06:40,557 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430661763]
[2023-11-06 22:06:40,557 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:06:40,557 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408872559]
[2023-11-06 22:06:40,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408872559] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:06:40,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:06:40,562 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-11-06 22:06:40,563 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507631032]
[2023-11-06 22:06:40,563 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:06:40,574 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:06:40,574 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:06:40,583 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:06:40,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-11-06 22:06:40,586 INFO  L87              Difference]: Start difference. First operand 23224 states and 38693 transitions. Second operand  has 5 states, 5 states have (on average 1581.8) internal successors, (7909), 5 states have internal predecessors, (7909), 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)