./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
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_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f90387b4366fa2b0592b85f27e9644c506e9166c72ff9be9b9debd83746e46f9
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 04:15:22,115 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 04:15:22,179 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 04:15:22,185 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 04:15:22,185 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 04:15:22,209 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 04:15:22,210 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 04:15:22,210 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 04:15:22,211 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 04:15:22,211 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 04:15:22,212 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 04:15:22,212 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 04:15:22,213 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 04:15:22,214 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 04:15:22,214 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 04:15:22,215 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 04:15:22,215 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 04:15:22,216 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 04:15:22,216 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 04:15:22,217 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 04:15:22,217 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 04:15:22,218 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 04:15:22,218 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 04:15:22,219 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 04:15:22,219 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 04:15:22,220 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 04:15:22,220 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 04:15:22,220 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 04:15:22,221 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:15:22,221 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 04:15:22,222 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 04:15:22,222 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 04:15:22,223 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 04:15:22,223 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 04:15:22,223 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 04:15:22,224 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 04:15:22,224 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 04:15:22,225 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 04:15:22,225 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 04:15:22,225 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_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/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_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f90387b4366fa2b0592b85f27e9644c506e9166c72ff9be9b9debd83746e46f9
[2023-11-29 04:15:22,439 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 04:15:22,458 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 04:15:22,460 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 04:15:22,461 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 04:15:22,462 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 04:15:22,463 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-11-29 04:15:25,269 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 04:15:25,762 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 04:15:25,763 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-11-29 04:15:25,811 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/data/e097d0bc5/fef1f1c534c747c0a7e6a1f879f3c0df/FLAG767738f8a
[2023-11-29 04:15:25,826 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/data/e097d0bc5/fef1f1c534c747c0a7e6a1f879f3c0df
[2023-11-29 04:15:25,828 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 04:15:25,830 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 04:15:25,831 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 04:15:25,832 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 04:15:25,837 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 04:15:25,837 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:15:25" (1/1) ...
[2023-11-29 04:15:25,838 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c993990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:25, skipping insertion in model container
[2023-11-29 04:15:25,839 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:15:25" (1/1) ...
[2023-11-29 04:15:26,028 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 04:15:26,259 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_e6d17698-662d-47cc-b40c-5b4018a1e4b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c[1180,1193]
[2023-11-29 04:15:27,637 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:15:27,648 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 04:15:27,662 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_e6d17698-662d-47cc-b40c-5b4018a1e4b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c[1180,1193]
[2023-11-29 04:15:28,643 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:15:28,658 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 04:15:28,658 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28 WrapperNode
[2023-11-29 04:15:28,658 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 04:15:28,659 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 04:15:28,659 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 04:15:28,660 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 04:15:28,666 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:29,042 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:32,790 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60519
[2023-11-29 04:15:32,790 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 04:15:32,791 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 04:15:32,791 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 04:15:32,791 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 04:15:32,801 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:32,801 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:33,731 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:34,369 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 04:15:34,369 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:34,369 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:35,401 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:35,756 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:35,948 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:36,091 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:36,806 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 04:15:36,807 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 04:15:36,808 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 04:15:36,808 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 04:15:36,808 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (1/1) ...
[2023-11-29 04:15:36,813 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:15:36,821 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:15:36,832 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 04:15:36,833 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 04:15:36,859 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 04:15:36,859 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 04:15:36,859 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 04:15:36,859 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 04:15:38,760 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 04:15:38,762 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 04:16:06,093 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 04:16:06,710 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 04:16:06,710 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 04:16:06,717 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:16:06 BoogieIcfgContainer
[2023-11-29 04:16:06,717 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 04:16:06,719 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 04:16:06,720 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 04:16:06,723 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 04:16:06,723 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:15:25" (1/3) ...
[2023-11-29 04:16:06,724 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f612d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:16:06, skipping insertion in model container
[2023-11-29 04:16:06,724 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:15:28" (2/3) ...
[2023-11-29 04:16:06,724 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f612d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:16:06, skipping insertion in model container
[2023-11-29 04:16:06,724 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:16:06" (3/3) ...
[2023-11-29 04:16:06,725 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-11-29 04:16:06,744 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 04:16:06,745 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 04:16:06,999 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 04:16:07,006 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15bb33cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 04:16:07,006 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 04:16:07,048 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13748 states, 13746 states have (on average 1.6673941510257528) internal successors, (22920), 13747 states have internal predecessors, (22920), 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)
[2023-11-29 04:16:07,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 763
[2023-11-29 04:16:07,100 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:07,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:16:07,102 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:07,108 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:07,109 INFO  L85        PathProgramCache]: Analyzing trace with hash 152610740, now seen corresponding path program 1 times
[2023-11-29 04:16:07,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:07,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294957149]
[2023-11-29 04:16:07,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:07,121 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:07,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:10,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:10,863 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:10,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294957149]
[2023-11-29 04:16:10,864 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294957149] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:10,864 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:10,865 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:16:10,866 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428864783]
[2023-11-29 04:16:10,867 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:10,873 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:16:10,873 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:10,903 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:16:10,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:10,938 INFO  L87              Difference]: Start difference. First operand  has 13748 states, 13746 states have (on average 1.6673941510257528) internal successors, (22920), 13747 states have internal predecessors, (22920), 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 190.5) internal successors, (762), 4 states have internal predecessors, (762), 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)
[2023-11-29 04:16:11,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:11,573 INFO  L93              Difference]: Finished difference Result 26991 states and 45001 transitions.
[2023-11-29 04:16:11,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:16:11,576 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 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 762
[2023-11-29 04:16:11,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:11,654 INFO  L225             Difference]: With dead ends: 26991
[2023-11-29 04:16:11,654 INFO  L226             Difference]: Without dead ends: 13748
[2023-11-29 04:16:11,672 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
[2023-11-29 04:16:11,675 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 1 mSDsluCounter, 45821 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68734 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:16:11,676 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68734 Invalid, 13 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:16:11,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13748 states.
[2023-11-29 04:16:11,940 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 13748.
[2023-11-29 04:16:11,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13748 states, 13747 states have (on average 1.6671273732450715) internal successors, (22918), 13747 states have internal predecessors, (22918), 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)
[2023-11-29 04:16:12,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 22918 transitions.
[2023-11-29 04:16:12,008 INFO  L78                 Accepts]: Start accepts. Automaton has 13748 states and 22918 transitions. Word has length 762
[2023-11-29 04:16:12,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:12,010 INFO  L495      AbstractCegarLoop]: Abstraction has 13748 states and 22918 transitions.
[2023-11-29 04:16:12,011 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 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)
[2023-11-29 04:16:12,011 INFO  L276                IsEmpty]: Start isEmpty. Operand 13748 states and 22918 transitions.
[2023-11-29 04:16:12,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 764
[2023-11-29 04:16:12,030 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:12,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:16:12,031 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 04:16:12,031 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:12,031 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:12,032 INFO  L85        PathProgramCache]: Analyzing trace with hash 437695140, now seen corresponding path program 1 times
[2023-11-29 04:16:12,032 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:12,033 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401571817]
[2023-11-29 04:16:12,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:12,033 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:12,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:13,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:13,672 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:13,672 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401571817]
[2023-11-29 04:16:13,672 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401571817] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:13,673 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:13,673 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:16:13,673 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737237308]
[2023-11-29 04:16:13,673 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:13,676 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:16:13,676 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:13,678 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:16:13,678 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:13,679 INFO  L87              Difference]: Start difference. First operand 13748 states and 22918 transitions. Second operand  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 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)
[2023-11-29 04:16:14,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:14,392 INFO  L93              Difference]: Finished difference Result 26994 states and 44999 transitions.
[2023-11-29 04:16:14,393 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:16:14,393 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 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 763
[2023-11-29 04:16:14,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:14,460 INFO  L225             Difference]: With dead ends: 26994
[2023-11-29 04:16:14,460 INFO  L226             Difference]: Without dead ends: 13751
[2023-11-29 04:16:14,477 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
[2023-11-29 04:16:14,478 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 1 mSDsluCounter, 45819 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68732 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:16:14,479 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68732 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:16:14,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13751 states.
[2023-11-29 04:16:14,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13750.
[2023-11-29 04:16:14,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13750 states, 13749 states have (on average 1.6670303294785076) internal successors, (22920), 13749 states have internal predecessors, (22920), 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)
[2023-11-29 04:16:14,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 22920 transitions.
[2023-11-29 04:16:14,953 INFO  L78                 Accepts]: Start accepts. Automaton has 13750 states and 22920 transitions. Word has length 763
[2023-11-29 04:16:14,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:14,954 INFO  L495      AbstractCegarLoop]: Abstraction has 13750 states and 22920 transitions.
[2023-11-29 04:16:14,954 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 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)
[2023-11-29 04:16:14,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 13750 states and 22920 transitions.
[2023-11-29 04:16:14,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 765
[2023-11-29 04:16:14,962 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:14,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:16:14,963 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 04:16:14,963 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:14,964 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:14,964 INFO  L85        PathProgramCache]: Analyzing trace with hash -2046740400, now seen corresponding path program 1 times
[2023-11-29 04:16:14,965 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:14,965 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263473679]
[2023-11-29 04:16:14,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:14,966 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:15,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:16,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:16,369 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:16,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263473679]
[2023-11-29 04:16:16,370 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263473679] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:16,370 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:16,370 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:16:16,371 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187761819]
[2023-11-29 04:16:16,371 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:16,372 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:16:16,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:16,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:16:16,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:16,374 INFO  L87              Difference]: Start difference. First operand 13750 states and 22920 transitions. Second operand  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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)
[2023-11-29 04:16:16,835 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:16,835 INFO  L93              Difference]: Finished difference Result 40230 states and 67063 transitions.
[2023-11-29 04:16:16,835 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:16:16,836 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 764
[2023-11-29 04:16:16,838 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:16,872 INFO  L225             Difference]: With dead ends: 40230
[2023-11-29 04:16:16,873 INFO  L226             Difference]: Without dead ends: 26985
[2023-11-29 04:16:16,891 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
[2023-11-29 04:16:16,892 INFO  L413           NwaCegarLoop]: 23954 mSDtfsCounter, 22061 mSDsluCounter, 46856 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22061 SdHoareTripleChecker+Valid, 70810 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
[2023-11-29 04:16:16,893 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22061 Valid, 70810 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:16:16,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26985 states.
[2023-11-29 04:16:17,128 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26985 to 13752.
[2023-11-29 04:16:17,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13752 states, 13751 states have (on average 1.6669333139408042) internal successors, (22922), 13751 states have internal predecessors, (22922), 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)
[2023-11-29 04:16:17,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13752 states to 13752 states and 22922 transitions.
[2023-11-29 04:16:17,167 INFO  L78                 Accepts]: Start accepts. Automaton has 13752 states and 22922 transitions. Word has length 764
[2023-11-29 04:16:17,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:17,169 INFO  L495      AbstractCegarLoop]: Abstraction has 13752 states and 22922 transitions.
[2023-11-29 04:16:17,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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)
[2023-11-29 04:16:17,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 13752 states and 22922 transitions.
[2023-11-29 04:16:17,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 766
[2023-11-29 04:16:17,175 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:17,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:16:17,176 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 04:16:17,176 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:17,176 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:17,177 INFO  L85        PathProgramCache]: Analyzing trace with hash 864855052, now seen corresponding path program 1 times
[2023-11-29 04:16:17,177 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:17,177 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161432960]
[2023-11-29 04:16:17,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:17,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:17,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:20,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:20,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:20,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161432960]
[2023-11-29 04:16:20,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161432960] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:20,161 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:20,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 04:16:20,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971389550]
[2023-11-29 04:16:20,162 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:20,163 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:16:20,163 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:20,164 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:16:20,164 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:16:20,165 INFO  L87              Difference]: Start difference. First operand 13752 states and 22922 transitions. Second operand  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 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)
[2023-11-29 04:16:21,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:21,229 INFO  L93              Difference]: Finished difference Result 40867 states and 68120 transitions.
[2023-11-29 04:16:21,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 04:16:21,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 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 765
[2023-11-29 04:16:21,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:21,271 INFO  L225             Difference]: With dead ends: 40867
[2023-11-29 04:16:21,271 INFO  L226             Difference]: Without dead ends: 27620
[2023-11-29 04:16:21,286 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-11-29 04:16:21,287 INFO  L413           NwaCegarLoop]: 23945 mSDtfsCounter, 111473 mSDsluCounter, 68702 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111473 SdHoareTripleChecker+Valid, 92647 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 04:16:21,288 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [111473 Valid, 92647 Invalid, 62 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 04:16:21,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27620 states.
[2023-11-29 04:16:21,521 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27620 to 14379.
[2023-11-29 04:16:21,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14379 states, 14378 states have (on average 1.6669216859090277) internal successors, (23967), 14378 states have internal predecessors, (23967), 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)
[2023-11-29 04:16:21,556 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 23967 transitions.
[2023-11-29 04:16:21,556 INFO  L78                 Accepts]: Start accepts. Automaton has 14379 states and 23967 transitions. Word has length 765
[2023-11-29 04:16:21,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:21,558 INFO  L495      AbstractCegarLoop]: Abstraction has 14379 states and 23967 transitions.
[2023-11-29 04:16:21,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 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)
[2023-11-29 04:16:21,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 14379 states and 23967 transitions.
[2023-11-29 04:16:22,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-11-29 04:16:22,037 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:22,043 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:16:22,043 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 04:16:22,043 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:22,044 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:22,048 INFO  L85        PathProgramCache]: Analyzing trace with hash 43907390, now seen corresponding path program 1 times
[2023-11-29 04:16:22,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:22,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250609036]
[2023-11-29 04:16:22,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:22,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:22,969 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:16:22,969 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369255741]
[2023-11-29 04:16:22,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:22,971 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:16:22,971 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:16:22,973 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:16:22,981 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 04:16:34,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:34,798 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42144 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:16:35,054 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:16:35,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:35,564 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:16:35,564 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:35,565 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250609036]
[2023-11-29 04:16:35,565 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:16:35,565 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369255741]
[2023-11-29 04:16:35,565 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [369255741] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:35,565 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:35,568 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:16:35,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052262688]
[2023-11-29 04:16:35,569 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:35,584 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:16:35,584 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:35,597 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:16:35,597 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:35,600 INFO  L87              Difference]: Start difference. First operand 14379 states and 23967 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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)
[2023-11-29 04:16:36,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:36,013 INFO  L93              Difference]: Finished difference Result 27636 states and 46064 transitions.
[2023-11-29 04:16:36,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:16:36,018 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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 9556
[2023-11-29 04:16:36,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:36,049 INFO  L225             Difference]: With dead ends: 27636
[2023-11-29 04:16:36,049 INFO  L226             Difference]: Without dead ends: 14389
[2023-11-29 04:16:36,066 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9555 GetRequests, 9553 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:36,067 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 12 mSDsluCounter, 45816 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68729 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:16:36,067 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68729 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:16:36,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14389 states.
[2023-11-29 04:16:36,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 14381.
[2023-11-29 04:16:36,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14381 states, 14380 states have (on average 1.6668289290681502) internal successors, (23969), 14380 states have internal predecessors, (23969), 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)
[2023-11-29 04:16:36,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14381 states to 14381 states and 23969 transitions.
[2023-11-29 04:16:36,543 INFO  L78                 Accepts]: Start accepts. Automaton has 14381 states and 23969 transitions. Word has length 9556
[2023-11-29 04:16:36,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:36,547 INFO  L495      AbstractCegarLoop]: Abstraction has 14381 states and 23969 transitions.
[2023-11-29 04:16:36,549 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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)
[2023-11-29 04:16:36,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 14381 states and 23969 transitions.
[2023-11-29 04:16:37,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-11-29 04:16:37,099 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:37,103 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:16:37,211 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 04:16:37,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:16:37,304 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:37,307 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:37,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 1115455116, now seen corresponding path program 1 times
[2023-11-29 04:16:37,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:37,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520156192]
[2023-11-29 04:16:37,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:37,312 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:38,165 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:16:38,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205148741]
[2023-11-29 04:16:38,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:38,168 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:16:38,168 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:16:38,169 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:16:38,172 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 04:16:48,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:16:48,997 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42145 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:16:49,131 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:16:49,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:16:49,420 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:16:49,421 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:16:49,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520156192]
[2023-11-29 04:16:49,421 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:16:49,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205148741]
[2023-11-29 04:16:49,421 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [205148741] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:16:49,421 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:16:49,424 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:16:49,425 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633194015]
[2023-11-29 04:16:49,425 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:16:49,437 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:16:49,437 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:16:49,447 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:16:49,447 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:49,450 INFO  L87              Difference]: Start difference. First operand 14381 states and 23969 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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)
[2023-11-29 04:16:49,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:16:49,778 INFO  L93              Difference]: Finished difference Result 27639 states and 46066 transitions.
[2023-11-29 04:16:49,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:16:49,781 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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 9556
[2023-11-29 04:16:49,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:16:49,822 INFO  L225             Difference]: With dead ends: 27639
[2023-11-29 04:16:49,822 INFO  L226             Difference]: Without dead ends: 14390
[2023-11-29 04:16:49,830 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9555 GetRequests, 9553 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:16:49,831 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 12 mSDsluCounter, 45816 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68729 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:16:49,832 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68729 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:16:49,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14390 states.
[2023-11-29 04:16:49,978 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14390 to 14382.
[2023-11-29 04:16:49,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666782560322648) internal successors, (23970), 14381 states have internal predecessors, (23970), 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)
[2023-11-29 04:16:50,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23970 transitions.
[2023-11-29 04:16:50,022 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23970 transitions. Word has length 9556
[2023-11-29 04:16:50,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:16:50,030 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23970 transitions.
[2023-11-29 04:16:50,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 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)
[2023-11-29 04:16:50,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23970 transitions.
[2023-11-29 04:16:50,604 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-11-29 04:16:50,604 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:16:50,609 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:16:50,714 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 04:16:50,809 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:16:50,809 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:16:50,812 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:16:50,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -795789606, now seen corresponding path program 1 times
[2023-11-29 04:16:50,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:16:50,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316523999]
[2023-11-29 04:16:50,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:50,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:16:51,558 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:16:51,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264115673]
[2023-11-29 04:16:51,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:16:51,560 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:16:51,561 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:16:51,561 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:16:51,563 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 04:17:01,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:17:02,177 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42146 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:17:02,319 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:17:04,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:17:04,615 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:17:04,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:17:04,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316523999]
[2023-11-29 04:17:04,615 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:17:04,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264115673]
[2023-11-29 04:17:04,615 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [264115673] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:17:04,615 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:17:04,618 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:17:04,618 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129831207]
[2023-11-29 04:17:04,619 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:17:04,629 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:17:04,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:17:04,639 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:17:04,639 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:17:04,642 INFO  L87              Difference]: Start difference. First operand 14382 states and 23970 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 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)
[2023-11-29 04:17:11,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:17:11,827 INFO  L93              Difference]: Finished difference Result 27639 states and 46061 transitions.
[2023-11-29 04:17:11,827 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:17:11,829 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 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 9556
[2023-11-29 04:17:11,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:17:11,859 INFO  L225             Difference]: With dead ends: 27639
[2023-11-29 04:17:11,860 INFO  L226             Difference]: Without dead ends: 14389
[2023-11-29 04:17:11,868 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9556 GetRequests, 9553 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:17:11,869 INFO  L413           NwaCegarLoop]: 17821 mSDtfsCounter, 44227 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 7404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44227 SdHoareTripleChecker+Valid, 18455 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:17:11,870 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44227 Valid, 18455 Invalid, 7404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7404 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-11-29 04:17:11,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14389 states.
[2023-11-29 04:17:12,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 14382.
[2023-11-29 04:17:12,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666713024129059) internal successors, (23969), 14381 states have internal predecessors, (23969), 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)
[2023-11-29 04:17:12,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23969 transitions.
[2023-11-29 04:17:12,045 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23969 transitions. Word has length 9556
[2023-11-29 04:17:12,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:17:12,047 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23969 transitions.
[2023-11-29 04:17:12,050 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 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)
[2023-11-29 04:17:12,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23969 transitions.
[2023-11-29 04:17:12,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9558
[2023-11-29 04:17:12,607 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:17:12,612 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:17:12,726 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 04:17:12,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:17:12,813 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:17:12,815 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:17:12,819 INFO  L85        PathProgramCache]: Analyzing trace with hash -995608086, now seen corresponding path program 1 times
[2023-11-29 04:17:12,819 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:17:12,819 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121712253]
[2023-11-29 04:17:12,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:12,822 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:17:13,551 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:17:13,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568987686]
[2023-11-29 04:17:13,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:13,554 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:17:13,554 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:17:13,555 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:17:13,556 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 04:17:24,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:17:24,616 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42147 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:17:24,785 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:17:26,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:17:26,927 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:17:26,927 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:17:26,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121712253]
[2023-11-29 04:17:26,927 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:17:26,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568987686]
[2023-11-29 04:17:26,927 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568987686] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:17:26,927 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:17:26,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:17:26,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356759198]
[2023-11-29 04:17:26,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:17:26,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:17:26,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:17:26,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:17:26,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:17:26,948 INFO  L87              Difference]: Start difference. First operand 14382 states and 23969 transitions. Second operand  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 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)
[2023-11-29 04:17:33,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:17:33,715 INFO  L93              Difference]: Finished difference Result 27646 states and 46070 transitions.
[2023-11-29 04:17:33,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:17:33,717 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 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 9557
[2023-11-29 04:17:33,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:17:33,737 INFO  L225             Difference]: With dead ends: 27646
[2023-11-29 04:17:33,737 INFO  L226             Difference]: Without dead ends: 14396
[2023-11-29 04:17:33,747 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9557 GetRequests, 9554 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:17:33,748 INFO  L413           NwaCegarLoop]: 17830 mSDtfsCounter, 44220 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 7406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44220 SdHoareTripleChecker+Valid, 18474 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:17:33,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44220 Valid, 18474 Invalid, 7406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7406 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-11-29 04:17:33,770 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14396 states.
[2023-11-29 04:17:33,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14396 to 14382.
[2023-11-29 04:17:33,924 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6666434879354703) internal successors, (23968), 14381 states have internal predecessors, (23968), 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)
[2023-11-29 04:17:33,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23968 transitions.
[2023-11-29 04:17:33,948 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23968 transitions. Word has length 9557
[2023-11-29 04:17:33,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:17:33,950 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23968 transitions.
[2023-11-29 04:17:33,952 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 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)
[2023-11-29 04:17:33,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23968 transitions.
[2023-11-29 04:17:34,330 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9559
[2023-11-29 04:17:34,330 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:17:34,335 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:17:34,444 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 04:17:34,536 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:17:34,536 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:17:34,536 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:17:34,540 INFO  L85        PathProgramCache]: Analyzing trace with hash -1145226327, now seen corresponding path program 1 times
[2023-11-29 04:17:34,540 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:17:34,540 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414573496]
[2023-11-29 04:17:34,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:34,541 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:17:35,279 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:17:35,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062355241]
[2023-11-29 04:17:35,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:35,282 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:17:35,282 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:17:35,283 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:17:35,285 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 04:17:45,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:17:45,583 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42148 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:17:45,713 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:17:47,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:17:47,902 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:17:47,902 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:17:47,902 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414573496]
[2023-11-29 04:17:47,902 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:17:47,902 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062355241]
[2023-11-29 04:17:47,902 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062355241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:17:47,902 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:17:47,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:17:47,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964497350]
[2023-11-29 04:17:47,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:17:47,913 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:17:47,913 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:17:47,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:17:47,920 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:17:47,923 INFO  L87              Difference]: Start difference. First operand 14382 states and 23968 transitions. Second operand  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 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)
[2023-11-29 04:17:55,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:17:55,384 INFO  L93              Difference]: Finished difference Result 27650 states and 46074 transitions.
[2023-11-29 04:17:55,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:17:55,386 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 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 9558
[2023-11-29 04:17:55,387 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:17:55,399 INFO  L225             Difference]: With dead ends: 27650
[2023-11-29 04:17:55,400 INFO  L226             Difference]: Without dead ends: 14400
[2023-11-29 04:17:55,407 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9558 GetRequests, 9555 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:17:55,407 INFO  L413           NwaCegarLoop]: 17834 mSDtfsCounter, 44215 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 7408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44215 SdHoareTripleChecker+Valid, 18483 SdHoareTripleChecker+Invalid, 7408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:17:55,408 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44215 Valid, 18483 Invalid, 7408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7408 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2023-11-29 04:17:55,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14400 states.
[2023-11-29 04:17:55,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 14382.
[2023-11-29 04:17:55,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6665739517418816) internal successors, (23967), 14381 states have internal predecessors, (23967), 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)
[2023-11-29 04:17:55,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23967 transitions.
[2023-11-29 04:17:55,574 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23967 transitions. Word has length 9558
[2023-11-29 04:17:55,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:17:55,577 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23967 transitions.
[2023-11-29 04:17:55,579 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 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)
[2023-11-29 04:17:55,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23967 transitions.
[2023-11-29 04:17:55,979 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9560
[2023-11-29 04:17:55,980 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:17:55,985 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:17:56,106 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 04:17:56,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 04:17:56,186 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:17:56,186 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:17:56,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 2021351999, now seen corresponding path program 1 times
[2023-11-29 04:17:56,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:17:56,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610749630]
[2023-11-29 04:17:56,196 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:56,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:17:57,011 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:17:57,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113973051]
[2023-11-29 04:17:57,013 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:17:57,013 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:17:57,013 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:17:57,014 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:17:57,016 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 04:18:08,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:18:08,640 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42149 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:18:08,755 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:18:11,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:18:11,126 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:18:11,126 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:18:11,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610749630]
[2023-11-29 04:18:11,126 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:18:11,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113973051]
[2023-11-29 04:18:11,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113973051] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:18:11,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:18:11,129 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:18:11,130 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363168787]
[2023-11-29 04:18:11,130 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:18:11,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:18:11,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:18:11,152 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:18:11,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:18:11,155 INFO  L87              Difference]: Start difference. First operand 14382 states and 23967 transitions. Second operand  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 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)
[2023-11-29 04:18:18,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:18:18,453 INFO  L93              Difference]: Finished difference Result 27657 states and 46083 transitions.
[2023-11-29 04:18:18,453 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:18:18,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 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 9559
[2023-11-29 04:18:18,456 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:18:18,466 INFO  L225             Difference]: With dead ends: 27657
[2023-11-29 04:18:18,466 INFO  L226             Difference]: Without dead ends: 14407
[2023-11-29 04:18:18,472 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9559 GetRequests, 9556 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:18:18,473 INFO  L413           NwaCegarLoop]: 17843 mSDtfsCounter, 44208 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 7410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44208 SdHoareTripleChecker+Valid, 18502 SdHoareTripleChecker+Invalid, 7410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-11-29 04:18:18,473 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44208 Valid, 18502 Invalid, 7410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7410 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-11-29 04:18:18,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14407 states.
[2023-11-29 04:18:18,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14382.
[2023-11-29 04:18:18,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6665044155482929) internal successors, (23966), 14381 states have internal predecessors, (23966), 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)
[2023-11-29 04:18:18,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23966 transitions.
[2023-11-29 04:18:18,630 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23966 transitions. Word has length 9559
[2023-11-29 04:18:18,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:18:18,631 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23966 transitions.
[2023-11-29 04:18:18,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 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)
[2023-11-29 04:18:18,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23966 transitions.
[2023-11-29 04:18:19,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9561
[2023-11-29 04:18:19,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:18:19,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:18:19,112 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 04:18:19,211 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 04:18:19,211 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:18:19,211 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:18:19,213 INFO  L85        PathProgramCache]: Analyzing trace with hash -1162364808, now seen corresponding path program 1 times
[2023-11-29 04:18:19,213 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:18:19,213 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315976251]
[2023-11-29 04:18:19,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:18:19,214 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:18:19,842 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:18:19,842 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842992390]
[2023-11-29 04:18:19,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:18:19,844 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:18:19,844 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:18:19,845 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:18:19,846 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 04:18:31,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:18:31,615 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42150 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:18:31,746 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:18:34,020 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:18:34,021 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:18:34,021 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:18:34,021 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315976251]
[2023-11-29 04:18:34,021 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:18:34,021 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842992390]
[2023-11-29 04:18:34,021 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [842992390] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:18:34,021 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:18:34,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:18:34,025 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413394967]
[2023-11-29 04:18:34,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:18:34,035 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:18:34,035 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:18:34,042 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:18:34,042 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:18:34,044 INFO  L87              Difference]: Start difference. First operand 14382 states and 23966 transitions. Second operand  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 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)
[2023-11-29 04:18:41,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:18:41,330 INFO  L93              Difference]: Finished difference Result 27661 states and 46087 transitions.
[2023-11-29 04:18:41,331 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:18:41,332 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 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 9560
[2023-11-29 04:18:41,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:18:41,341 INFO  L225             Difference]: With dead ends: 27661
[2023-11-29 04:18:41,341 INFO  L226             Difference]: Without dead ends: 14411
[2023-11-29 04:18:41,345 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9560 GetRequests, 9557 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:18:41,345 INFO  L413           NwaCegarLoop]: 17847 mSDtfsCounter, 44203 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 7412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44203 SdHoareTripleChecker+Valid, 18511 SdHoareTripleChecker+Invalid, 7412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:18:41,345 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44203 Valid, 18511 Invalid, 7412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7412 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-11-29 04:18:41,362 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14411 states.
[2023-11-29 04:18:41,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 14382.
[2023-11-29 04:18:41,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6664348793547041) internal successors, (23965), 14381 states have internal predecessors, (23965), 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)
[2023-11-29 04:18:41,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23965 transitions.
[2023-11-29 04:18:41,485 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23965 transitions. Word has length 9560
[2023-11-29 04:18:41,486 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:18:41,486 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23965 transitions.
[2023-11-29 04:18:41,487 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 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)
[2023-11-29 04:18:41,487 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23965 transitions.
[2023-11-29 04:18:41,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9562
[2023-11-29 04:18:41,891 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:18:41,895 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:18:42,001 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 04:18:42,095 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 04:18:42,096 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:18:42,096 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:18:42,098 INFO  L85        PathProgramCache]: Analyzing trace with hash -327166572, now seen corresponding path program 1 times
[2023-11-29 04:18:42,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:18:42,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645020976]
[2023-11-29 04:18:42,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:18:42,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:18:42,727 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:18:42,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244642759]
[2023-11-29 04:18:42,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:18:42,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:18:42,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:18:42,730 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:18:42,731 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 04:18:54,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:18:54,371 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42151 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:18:54,475 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:18:56,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:18:56,428 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:18:56,428 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:18:56,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645020976]
[2023-11-29 04:18:56,429 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:18:56,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244642759]
[2023-11-29 04:18:56,429 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [244642759] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:18:56,429 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:18:56,431 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:18:56,431 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874098596]
[2023-11-29 04:18:56,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:18:56,437 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:18:56,437 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:18:56,442 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:18:56,442 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:18:56,444 INFO  L87              Difference]: Start difference. First operand 14382 states and 23965 transitions. Second operand  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 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)
[2023-11-29 04:19:04,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:19:04,029 INFO  L93              Difference]: Finished difference Result 27668 states and 46096 transitions.
[2023-11-29 04:19:04,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:19:04,032 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 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 9561
[2023-11-29 04:19:04,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:19:04,045 INFO  L225             Difference]: With dead ends: 27668
[2023-11-29 04:19:04,045 INFO  L226             Difference]: Without dead ends: 14418
[2023-11-29 04:19:04,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9561 GetRequests, 9558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:19:04,053 INFO  L413           NwaCegarLoop]: 17856 mSDtfsCounter, 44196 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 7414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44196 SdHoareTripleChecker+Valid, 18530 SdHoareTripleChecker+Invalid, 7414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:19:04,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44196 Valid, 18530 Invalid, 7414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7414 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2023-11-29 04:19:04,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14418 states.
[2023-11-29 04:19:04,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 14382.
[2023-11-29 04:19:04,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6663653431611154) internal successors, (23964), 14381 states have internal predecessors, (23964), 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)
[2023-11-29 04:19:04,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23964 transitions.
[2023-11-29 04:19:04,246 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23964 transitions. Word has length 9561
[2023-11-29 04:19:04,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:19:04,247 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23964 transitions.
[2023-11-29 04:19:04,249 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 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)
[2023-11-29 04:19:04,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23964 transitions.
[2023-11-29 04:19:04,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9563
[2023-11-29 04:19:04,671 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:19:04,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:19:04,794 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 04:19:04,875 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:19:04,876 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:19:04,876 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:19:04,878 INFO  L85        PathProgramCache]: Analyzing trace with hash 918650183, now seen corresponding path program 1 times
[2023-11-29 04:19:04,878 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:19:04,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721521223]
[2023-11-29 04:19:04,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:04,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:19:05,691 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:19:05,692 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773994092]
[2023-11-29 04:19:05,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:05,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:19:05,694 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:19:05,695 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:19:05,697 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 04:19:18,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:19:18,469 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42152 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:19:18,597 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:19:21,340 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:19:21,340 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:19:21,340 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:19:21,340 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721521223]
[2023-11-29 04:19:21,340 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:19:21,340 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773994092]
[2023-11-29 04:19:21,340 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [773994092] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:19:21,340 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:19:21,343 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:19:21,343 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300814433]
[2023-11-29 04:19:21,343 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:19:21,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:19:21,349 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:19:21,355 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:19:21,355 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:19:21,358 INFO  L87              Difference]: Start difference. First operand 14382 states and 23964 transitions. Second operand  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 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)
[2023-11-29 04:19:29,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:19:29,097 INFO  L93              Difference]: Finished difference Result 27672 states and 46100 transitions.
[2023-11-29 04:19:29,097 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:19:29,100 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 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 9562
[2023-11-29 04:19:29,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:19:29,116 INFO  L225             Difference]: With dead ends: 27672
[2023-11-29 04:19:29,116 INFO  L226             Difference]: Without dead ends: 14422
[2023-11-29 04:19:29,124 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9562 GetRequests, 9559 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:19:29,124 INFO  L413           NwaCegarLoop]: 17860 mSDtfsCounter, 44191 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 7416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44191 SdHoareTripleChecker+Valid, 18539 SdHoareTripleChecker+Invalid, 7416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-11-29 04:19:29,125 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44191 Valid, 18539 Invalid, 7416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7416 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-11-29 04:19:29,146 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14422 states.
[2023-11-29 04:19:29,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14422 to 14382.
[2023-11-29 04:19:29,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6662958069675267) internal successors, (23963), 14381 states have internal predecessors, (23963), 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)
[2023-11-29 04:19:29,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23963 transitions.
[2023-11-29 04:19:29,322 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23963 transitions. Word has length 9562
[2023-11-29 04:19:29,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:19:29,323 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23963 transitions.
[2023-11-29 04:19:29,326 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 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)
[2023-11-29 04:19:29,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23963 transitions.
[2023-11-29 04:19:29,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9564
[2023-11-29 04:19:29,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:19:29,786 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:19:29,922 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 04:19:29,987 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 04:19:29,987 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:19:29,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:19:29,989 INFO  L85        PathProgramCache]: Analyzing trace with hash 2015167465, now seen corresponding path program 1 times
[2023-11-29 04:19:29,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:19:29,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117426479]
[2023-11-29 04:19:29,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:29,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:19:30,855 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:19:30,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048012896]
[2023-11-29 04:19:30,858 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:30,858 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:19:30,858 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:19:30,859 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:19:30,861 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 04:19:41,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:19:41,818 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42153 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:19:41,917 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:19:43,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:19:43,761 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:19:43,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:19:43,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117426479]
[2023-11-29 04:19:43,761 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:19:43,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048012896]
[2023-11-29 04:19:43,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048012896] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:19:43,761 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:19:43,763 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:19:43,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125926833]
[2023-11-29 04:19:43,764 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:19:43,768 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:19:43,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:19:43,773 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:19:43,773 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:19:43,776 INFO  L87              Difference]: Start difference. First operand 14382 states and 23963 transitions. Second operand  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 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)
[2023-11-29 04:19:50,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:19:50,628 INFO  L93              Difference]: Finished difference Result 27679 states and 46109 transitions.
[2023-11-29 04:19:50,628 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:19:50,630 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 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 9563
[2023-11-29 04:19:50,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:19:50,641 INFO  L225             Difference]: With dead ends: 27679
[2023-11-29 04:19:50,641 INFO  L226             Difference]: Without dead ends: 14429
[2023-11-29 04:19:50,648 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9563 GetRequests, 9560 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:19:50,648 INFO  L413           NwaCegarLoop]: 17869 mSDtfsCounter, 44184 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 7418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44184 SdHoareTripleChecker+Valid, 18558 SdHoareTripleChecker+Invalid, 7418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:19:50,649 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44184 Valid, 18558 Invalid, 7418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7418 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-11-29 04:19:50,664 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14429 states.
[2023-11-29 04:19:50,760 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 14382.
[2023-11-29 04:19:50,772 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666226270773938) internal successors, (23962), 14381 states have internal predecessors, (23962), 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)
[2023-11-29 04:19:50,789 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23962 transitions.
[2023-11-29 04:19:50,789 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23962 transitions. Word has length 9563
[2023-11-29 04:19:50,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:19:50,790 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23962 transitions.
[2023-11-29 04:19:50,792 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 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)
[2023-11-29 04:19:50,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23962 transitions.
[2023-11-29 04:19:51,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9565
[2023-11-29 04:19:51,174 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:19:51,176 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:19:51,283 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 04:19:51,376 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 04:19:51,377 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:19:51,377 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:19:51,379 INFO  L85        PathProgramCache]: Analyzing trace with hash -410822122, now seen corresponding path program 1 times
[2023-11-29 04:19:51,379 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:19:51,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189403804]
[2023-11-29 04:19:51,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:51,380 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:19:52,001 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:19:52,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152434928]
[2023-11-29 04:19:52,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:19:52,003 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:19:52,003 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:19:52,004 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:19:52,004 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 04:20:02,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:02,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42154 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:20:02,682 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:20:04,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:20:04,668 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:20:04,669 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:04,669 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189403804]
[2023-11-29 04:20:04,669 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:20:04,669 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152434928]
[2023-11-29 04:20:04,669 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152434928] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:04,669 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:04,672 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:20:04,672 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628389043]
[2023-11-29 04:20:04,672 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:04,677 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:20:04,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:04,683 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:20:04,683 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:20:04,685 INFO  L87              Difference]: Start difference. First operand 14382 states and 23962 transitions. Second operand  has 4 states, 4 states have (on average 2391.0) internal successors, (9564), 3 states have internal predecessors, (9564), 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)
[2023-11-29 04:20:11,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:11,496 INFO  L93              Difference]: Finished difference Result 27683 states and 46113 transitions.
[2023-11-29 04:20:11,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:20:11,498 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2391.0) internal successors, (9564), 3 states have internal predecessors, (9564), 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 9564
[2023-11-29 04:20:11,499 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:11,509 INFO  L225             Difference]: With dead ends: 27683
[2023-11-29 04:20:11,509 INFO  L226             Difference]: Without dead ends: 14433
[2023-11-29 04:20:11,515 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9564 GetRequests, 9561 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:20:11,516 INFO  L413           NwaCegarLoop]: 17873 mSDtfsCounter, 44179 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 7420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44179 SdHoareTripleChecker+Valid, 18567 SdHoareTripleChecker+Invalid, 7420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:11,516 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44179 Valid, 18567 Invalid, 7420 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 7420 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-11-29 04:20:11,531 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14433 states.
[2023-11-29 04:20:11,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14433 to 14382.
[2023-11-29 04:20:11,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666156734580349) internal successors, (23961), 14381 states have internal predecessors, (23961), 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)
[2023-11-29 04:20:11,655 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23961 transitions.
[2023-11-29 04:20:11,655 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23961 transitions. Word has length 9564
[2023-11-29 04:20:11,656 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:11,656 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23961 transitions.
[2023-11-29 04:20:11,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2391.0) internal successors, (9564), 3 states have internal predecessors, (9564), 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)
[2023-11-29 04:20:11,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23961 transitions.
[2023-11-29 04:20:12,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9566
[2023-11-29 04:20:12,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:12,034 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:12,140 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 04:20:12,234 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 04:20:12,235 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:12,235 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:12,237 INFO  L85        PathProgramCache]: Analyzing trace with hash 151149886, now seen corresponding path program 1 times
[2023-11-29 04:20:12,237 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:12,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770231419]
[2023-11-29 04:20:12,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:12,238 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:12,869 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:12,869 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870959568]
[2023-11-29 04:20:12,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:12,871 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:12,871 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:12,872 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:12,873 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 04:20:23,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:23,346 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42155 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:20:23,448 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:20:25,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:20:25,419 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:20:25,419 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:25,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770231419]
[2023-11-29 04:20:25,419 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:20:25,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870959568]
[2023-11-29 04:20:25,419 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [870959568] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:25,419 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:25,422 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:20:25,422 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076113560]
[2023-11-29 04:20:25,422 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:25,427 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:20:25,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:25,432 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:20:25,432 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:20:25,434 INFO  L87              Difference]: Start difference. First operand 14382 states and 23961 transitions. Second operand  has 4 states, 4 states have (on average 2391.25) internal successors, (9565), 3 states have internal predecessors, (9565), 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)
[2023-11-29 04:20:32,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:32,520 INFO  L93              Difference]: Finished difference Result 27690 states and 46122 transitions.
[2023-11-29 04:20:32,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:20:32,522 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2391.25) internal successors, (9565), 3 states have internal predecessors, (9565), 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 9565
[2023-11-29 04:20:32,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:32,531 INFO  L225             Difference]: With dead ends: 27690
[2023-11-29 04:20:32,532 INFO  L226             Difference]: Without dead ends: 14440
[2023-11-29 04:20:32,537 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9565 GetRequests, 9562 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:20:32,538 INFO  L413           NwaCegarLoop]: 17882 mSDtfsCounter, 44172 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 7422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44172 SdHoareTripleChecker+Valid, 18586 SdHoareTripleChecker+Invalid, 7422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:32,538 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44172 Valid, 18586 Invalid, 7422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7422 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-11-29 04:20:32,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14440 states.
[2023-11-29 04:20:32,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14440 to 14382.
[2023-11-29 04:20:32,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6660871983867602) internal successors, (23960), 14381 states have internal predecessors, (23960), 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)
[2023-11-29 04:20:32,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23960 transitions.
[2023-11-29 04:20:32,675 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23960 transitions. Word has length 9565
[2023-11-29 04:20:32,675 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:32,675 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23960 transitions.
[2023-11-29 04:20:32,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2391.25) internal successors, (9565), 3 states have internal predecessors, (9565), 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)
[2023-11-29 04:20:32,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23960 transitions.
[2023-11-29 04:20:33,050 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9567
[2023-11-29 04:20:33,050 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:33,052 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:20:33,154 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 04:20:33,253 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 04:20:33,253 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:33,253 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:33,255 INFO  L85        PathProgramCache]: Analyzing trace with hash -1911677211, now seen corresponding path program 1 times
[2023-11-29 04:20:33,255 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:33,255 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131488569]
[2023-11-29 04:20:33,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:33,256 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:33,883 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:33,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491170571]
[2023-11-29 04:20:33,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:33,885 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:33,885 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:33,886 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:33,887 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 04:20:44,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:20:44,385 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42156 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:20:44,483 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:20:46,375 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:20:46,375 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:20:46,375 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:20:46,375 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131488569]
[2023-11-29 04:20:46,375 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:20:46,375 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491170571]
[2023-11-29 04:20:46,375 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491170571] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:20:46,375 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:20:46,379 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:20:46,379 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468199838]
[2023-11-29 04:20:46,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:20:46,384 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:20:46,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:20:46,389 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:20:46,389 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:20:46,392 INFO  L87              Difference]: Start difference. First operand 14382 states and 23960 transitions. Second operand  has 4 states, 4 states have (on average 2391.5) internal successors, (9566), 3 states have internal predecessors, (9566), 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)
[2023-11-29 04:20:53,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:20:53,263 INFO  L93              Difference]: Finished difference Result 27694 states and 46126 transitions.
[2023-11-29 04:20:53,263 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:20:53,265 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2391.5) internal successors, (9566), 3 states have internal predecessors, (9566), 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 9566
[2023-11-29 04:20:53,265 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:20:53,273 INFO  L225             Difference]: With dead ends: 27694
[2023-11-29 04:20:53,273 INFO  L226             Difference]: Without dead ends: 14444
[2023-11-29 04:20:53,276 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9566 GetRequests, 9563 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:20:53,277 INFO  L413           NwaCegarLoop]: 17886 mSDtfsCounter, 44167 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 7424 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44167 SdHoareTripleChecker+Valid, 18595 SdHoareTripleChecker+Invalid, 7424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-11-29 04:20:53,277 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44167 Valid, 18595 Invalid, 7424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7424 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-11-29 04:20:53,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14444 states.
[2023-11-29 04:20:53,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14444 to 14382.
[2023-11-29 04:20:53,393 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6660176621931715) internal successors, (23959), 14381 states have internal predecessors, (23959), 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)
[2023-11-29 04:20:53,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23959 transitions.
[2023-11-29 04:20:53,409 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23959 transitions. Word has length 9566
[2023-11-29 04:20:53,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:20:53,410 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23959 transitions.
[2023-11-29 04:20:53,412 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2391.5) internal successors, (9566), 3 states have internal predecessors, (9566), 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)
[2023-11-29 04:20:53,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23959 transitions.
[2023-11-29 04:20:53,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9568
[2023-11-29 04:20:53,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:20:53,786 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:20:53,892 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 04:20:53,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 04:20:53,987 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:20:53,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:20:53,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 1277645203, now seen corresponding path program 1 times
[2023-11-29 04:20:53,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:20:53,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960710998]
[2023-11-29 04:20:53,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:53,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:20:54,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:20:54,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165963805]
[2023-11-29 04:20:54,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:20:54,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:20:54,607 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:20:54,608 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:20:54,609 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 04:21:04,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:04,920 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42157 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:21:05,019 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:06,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:21:06,878 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:06,878 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:06,879 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960710998]
[2023-11-29 04:21:06,879 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:06,879 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165963805]
[2023-11-29 04:21:06,879 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [165963805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:06,879 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:06,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:21:06,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569805466]
[2023-11-29 04:21:06,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:06,887 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:21:06,887 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:06,891 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:21:06,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:21:06,893 INFO  L87              Difference]: Start difference. First operand 14382 states and 23959 transitions. Second operand  has 4 states, 4 states have (on average 2391.75) internal successors, (9567), 3 states have internal predecessors, (9567), 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)
[2023-11-29 04:21:13,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:21:13,782 INFO  L93              Difference]: Finished difference Result 27701 states and 46135 transitions.
[2023-11-29 04:21:13,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:21:13,784 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2391.75) internal successors, (9567), 3 states have internal predecessors, (9567), 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 9567
[2023-11-29 04:21:13,785 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:21:13,795 INFO  L225             Difference]: With dead ends: 27701
[2023-11-29 04:21:13,795 INFO  L226             Difference]: Without dead ends: 14451
[2023-11-29 04:21:13,802 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9567 GetRequests, 9564 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:21:13,802 INFO  L413           NwaCegarLoop]: 17895 mSDtfsCounter, 44160 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 7426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44160 SdHoareTripleChecker+Valid, 18614 SdHoareTripleChecker+Invalid, 7426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:21:13,802 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44160 Valid, 18614 Invalid, 7426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7426 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-11-29 04:21:13,817 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14451 states.
[2023-11-29 04:21:13,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14451 to 14382.
[2023-11-29 04:21:13,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6659481259995828) internal successors, (23958), 14381 states have internal predecessors, (23958), 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)
[2023-11-29 04:21:13,943 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23958 transitions.
[2023-11-29 04:21:13,943 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23958 transitions. Word has length 9567
[2023-11-29 04:21:13,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:21:13,944 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23958 transitions.
[2023-11-29 04:21:13,946 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2391.75) internal successors, (9567), 3 states have internal predecessors, (9567), 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)
[2023-11-29 04:21:13,946 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23958 transitions.
[2023-11-29 04:21:14,319 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9569
[2023-11-29 04:21:14,319 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:21:14,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:21:14,423 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 04:21:14,521 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 04:21:14,521 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:21:14,521 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:21:14,522 INFO  L85        PathProgramCache]: Analyzing trace with hash -1344627788, now seen corresponding path program 1 times
[2023-11-29 04:21:14,523 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:21:14,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903989693]
[2023-11-29 04:21:14,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:14,523 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:21:15,178 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:21:15,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138569863]
[2023-11-29 04:21:15,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:21:15,180 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:21:15,180 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:21:15,181 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:21:15,183 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 04:21:37,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:21:37,400 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42158 conjuncts, 90 conjunts are in the unsatisfiable core
[2023-11-29 04:21:37,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:21:49,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:21:49,837 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:21:49,838 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:21:49,838 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903989693]
[2023-11-29 04:21:49,838 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:21:49,838 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138569863]
[2023-11-29 04:21:49,838 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138569863] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:21:49,838 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:21:49,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:21:49,840 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713631148]
[2023-11-29 04:21:49,840 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:21:49,845 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:21:49,845 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:21:49,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:21:49,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:21:49,851 INFO  L87              Difference]: Start difference. First operand 14382 states and 23958 transitions. Second operand  has 7 states, 7 states have (on average 1366.857142857143) internal successors, (9568), 6 states have internal predecessors, (9568), 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)
[2023-11-29 04:21:56,017 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:00,027 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:14,135 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:18,147 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:20,278 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:25,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:25,508 INFO  L93              Difference]: Finished difference Result 40245 states and 67043 transitions.
[2023-11-29 04:22:25,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:22:25,510 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1366.857142857143) internal successors, (9568), 6 states have internal predecessors, (9568), 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 9568
[2023-11-29 04:22:25,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:25,530 INFO  L225             Difference]: With dead ends: 40245
[2023-11-29 04:22:25,530 INFO  L226             Difference]: Without dead ends: 26995
[2023-11-29 04:22:25,538 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9571 GetRequests, 9562 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2023-11-29 04:22:25,538 INFO  L413           NwaCegarLoop]: 17548 mSDtfsCounter, 87095 mSDsluCounter, 52111 mSDsCounter, 0 mSdLazyCounter, 21411 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87095 SdHoareTripleChecker+Valid, 69659 SdHoareTripleChecker+Invalid, 21414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21411 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:25,538 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [87095 Valid, 69659 Invalid, 21414 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 21411 Invalid, 3 Unknown, 0 Unchecked, 34.7s Time]
[2023-11-29 04:22:25,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26995 states.
[2023-11-29 04:22:25,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26995 to 14459.
[2023-11-29 04:22:25,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14459 states, 14458 states have (on average 1.6650297413196846) internal successors, (24073), 14458 states have internal predecessors, (24073), 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)
[2023-11-29 04:22:25,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14459 states to 14459 states and 24073 transitions.
[2023-11-29 04:22:25,726 INFO  L78                 Accepts]: Start accepts. Automaton has 14459 states and 24073 transitions. Word has length 9568
[2023-11-29 04:22:25,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:25,726 INFO  L495      AbstractCegarLoop]: Abstraction has 14459 states and 24073 transitions.
[2023-11-29 04:22:25,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1366.857142857143) internal successors, (9568), 6 states have internal predecessors, (9568), 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)
[2023-11-29 04:22:25,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 14459 states and 24073 transitions.
[2023-11-29 04:22:26,102 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9570
[2023-11-29 04:22:26,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:26,104 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:22:26,240 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 04:22:26,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:26,305 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:26,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:26,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -238379966, now seen corresponding path program 1 times
[2023-11-29 04:22:26,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:26,306 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931021835]
[2023-11-29 04:22:26,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:26,307 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:26,996 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:26,996 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270586503]
[2023-11-29 04:22:26,998 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:26,998 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:26,998 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:26,999 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:27,000 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 04:22:37,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:37,267 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42159 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:22:37,375 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:22:39,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:22:39,632 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:22:39,632 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:22:39,632 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931021835]
[2023-11-29 04:22:39,632 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:22:39,633 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270586503]
[2023-11-29 04:22:39,633 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [270586503] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:22:39,633 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:22:39,636 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:22:39,636 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809635739]
[2023-11-29 04:22:39,636 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:22:39,640 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:22:39,641 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:22:39,644 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:22:39,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:22:39,647 INFO  L87              Difference]: Start difference. First operand 14459 states and 24073 transitions. Second operand  has 5 states, 5 states have (on average 1913.8) internal successors, (9569), 4 states have internal predecessors, (9569), 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)
[2023-11-29 04:22:43,080 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:22:43,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:22:43,413 INFO  L93              Difference]: Finished difference Result 27712 states and 46150 transitions.
[2023-11-29 04:22:43,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 04:22:43,416 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1913.8) internal successors, (9569), 4 states have internal predecessors, (9569), 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 9569
[2023-11-29 04:22:43,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:22:43,427 INFO  L225             Difference]: With dead ends: 27712
[2023-11-29 04:22:43,427 INFO  L226             Difference]: Without dead ends: 14462
[2023-11-29 04:22:43,434 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9569 GetRequests, 9565 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:22:43,434 INFO  L413           NwaCegarLoop]: 24028 mSDtfsCounter, 66208 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66208 SdHoareTripleChecker+Valid, 28025 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:22:43,434 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [66208 Valid, 28025 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-29 04:22:43,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14462 states.
[2023-11-29 04:22:43,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14462 to 14382.
[2023-11-29 04:22:43,558 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6658090536124053) internal successors, (23956), 14381 states have internal predecessors, (23956), 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)
[2023-11-29 04:22:43,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23956 transitions.
[2023-11-29 04:22:43,575 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23956 transitions. Word has length 9569
[2023-11-29 04:22:43,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:22:43,576 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23956 transitions.
[2023-11-29 04:22:43,578 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1913.8) internal successors, (9569), 4 states have internal predecessors, (9569), 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)
[2023-11-29 04:22:43,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23956 transitions.
[2023-11-29 04:22:44,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9571
[2023-11-29 04:22:44,072 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:22:44,074 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:22:44,178 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 04:22:44,274 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:44,274 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:22:44,275 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:22:44,276 INFO  L85        PathProgramCache]: Analyzing trace with hash 1354058537, now seen corresponding path program 1 times
[2023-11-29 04:22:44,276 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:22:44,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725890799]
[2023-11-29 04:22:44,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:44,277 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:22:44,901 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:22:44,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191120657]
[2023-11-29 04:22:44,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:22:44,903 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:22:44,903 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:22:44,904 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:22:44,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 04:22:59,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:22:59,832 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42160 conjuncts, 72 conjunts are in the unsatisfiable core
[2023-11-29 04:22:59,947 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:23:29,438 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:23:29,438 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:23:29,438 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:23:29,438 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725890799]
[2023-11-29 04:23:29,438 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:23:29,438 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191120657]
[2023-11-29 04:23:29,438 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191120657] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:23:29,438 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:23:29,441 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2023-11-29 04:23:29,441 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855699598]
[2023-11-29 04:23:29,441 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:23:29,445 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 04:23:29,445 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:23:29,449 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 04:23:29,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2023-11-29 04:23:29,451 INFO  L87              Difference]: Start difference. First operand 14382 states and 23956 transitions. Second operand  has 16 states, 16 states have (on average 598.125) internal successors, (9570), 15 states have internal predecessors, (9570), 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)
[2023-11-29 04:24:43,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:24:43,152 INFO  L93              Difference]: Finished difference Result 121072 states and 201646 transitions.
[2023-11-29 04:24:43,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. 
[2023-11-29 04:24:43,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 598.125) internal successors, (9570), 15 states have internal predecessors, (9570), 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 9570
[2023-11-29 04:24:43,157 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:24:43,217 INFO  L225             Difference]: With dead ends: 121072
[2023-11-29 04:24:43,217 INFO  L226             Difference]: Without dead ends: 107822
[2023-11-29 04:24:43,228 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9624 GetRequests, 9555 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=918, Invalid=4052, Unknown=0, NotChecked=0, Total=4970
[2023-11-29 04:24:43,228 INFO  L413           NwaCegarLoop]: 24631 mSDtfsCounter, 562519 mSDsluCounter, 273021 mSDsCounter, 0 mSdLazyCounter, 103875 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562519 SdHoareTripleChecker+Valid, 297652 SdHoareTripleChecker+Invalid, 103879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:24:43,229 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [562519 Valid, 297652 Invalid, 103879 Unknown, 0 Unchecked, 1.6s Time], IncrementalHoareTripleChecker [4 Valid, 103875 Invalid, 0 Unknown, 0 Unchecked, 65.8s Time]
[2023-11-29 04:24:43,282 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107822 states.
[2023-11-29 04:24:43,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107822 to 14393.
[2023-11-29 04:24:43,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14393 states, 14392 states have (on average 1.6655780989438578) internal successors, (23971), 14392 states have internal predecessors, (23971), 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)
[2023-11-29 04:24:43,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14393 states to 14393 states and 23971 transitions.
[2023-11-29 04:24:43,596 INFO  L78                 Accepts]: Start accepts. Automaton has 14393 states and 23971 transitions. Word has length 9570
[2023-11-29 04:24:43,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:24:43,598 INFO  L495      AbstractCegarLoop]: Abstraction has 14393 states and 23971 transitions.
[2023-11-29 04:24:43,600 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 598.125) internal successors, (9570), 15 states have internal predecessors, (9570), 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)
[2023-11-29 04:24:43,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 14393 states and 23971 transitions.
[2023-11-29 04:24:43,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9572
[2023-11-29 04:24:43,974 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:24:43,975 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:24:44,115 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 04:24:44,175 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:44,176 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:24:44,176 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:24:44,177 INFO  L85        PathProgramCache]: Analyzing trace with hash 1746321273, now seen corresponding path program 1 times
[2023-11-29 04:24:44,177 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:24:44,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104574553]
[2023-11-29 04:24:44,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:44,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:24:44,822 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:24:44,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109588167]
[2023-11-29 04:24:44,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:24:44,824 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:24:44,824 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:24:44,824 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:24:44,825 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 04:25:05,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:25:05,762 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42163 conjuncts, 84 conjunts are in the unsatisfiable core
[2023-11-29 04:25:05,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:25:42,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:25:42,503 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:25:42,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:25:42,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104574553]
[2023-11-29 04:25:42,503 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:25:42,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109588167]
[2023-11-29 04:25:42,503 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [109588167] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:25:42,503 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:25:42,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-29 04:25:42,507 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939754869]
[2023-11-29 04:25:42,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:25:42,511 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-29 04:25:42,511 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:25:42,515 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-29 04:25:42,515 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210
[2023-11-29 04:25:42,517 INFO  L87              Difference]: Start difference. First operand 14393 states and 23971 transitions. Second operand  has 15 states, 15 states have (on average 638.0666666666667) internal successors, (9571), 14 states have internal predecessors, (9571), 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)
[2023-11-29 04:26:21,373 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:26:21,373 INFO  L93              Difference]: Finished difference Result 62275 states and 103733 transitions.
[2023-11-29 04:26:21,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-11-29 04:26:21,375 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 638.0666666666667) internal successors, (9571), 14 states have internal predecessors, (9571), 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 9571
[2023-11-29 04:26:21,378 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:26:21,410 INFO  L225             Difference]: With dead ends: 62275
[2023-11-29 04:26:21,410 INFO  L226             Difference]: Without dead ends: 49014
[2023-11-29 04:26:21,423 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9582 GetRequests, 9557 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702
[2023-11-29 04:26:21,423 INFO  L413           NwaCegarLoop]: 17527 mSDtfsCounter, 303320 mSDsluCounter, 184277 mSDsCounter, 0 mSdLazyCounter, 59966 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303320 SdHoareTripleChecker+Valid, 201804 SdHoareTripleChecker+Invalid, 59968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:26:21,424 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [303320 Valid, 201804 Invalid, 59968 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [2 Valid, 59966 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time]
[2023-11-29 04:26:21,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49014 states.
[2023-11-29 04:26:21,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49014 to 19690.
[2023-11-29 04:26:21,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19690 states, 19689 states have (on average 1.6651429732337855) internal successors, (32785), 19689 states have internal predecessors, (32785), 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)
[2023-11-29 04:26:21,727 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19690 states to 19690 states and 32785 transitions.
[2023-11-29 04:26:21,728 INFO  L78                 Accepts]: Start accepts. Automaton has 19690 states and 32785 transitions. Word has length 9571
[2023-11-29 04:26:21,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:26:21,730 INFO  L495      AbstractCegarLoop]: Abstraction has 19690 states and 32785 transitions.
[2023-11-29 04:26:21,731 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 638.0666666666667) internal successors, (9571), 14 states have internal predecessors, (9571), 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)
[2023-11-29 04:26:21,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 19690 states and 32785 transitions.
[2023-11-29 04:26:22,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9573
[2023-11-29 04:26:22,202 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:26:22,203 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:26:22,344 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 04:26:22,404 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:22,404 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:26:22,405 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:26:22,406 INFO  L85        PathProgramCache]: Analyzing trace with hash -707858841, now seen corresponding path program 1 times
[2023-11-29 04:26:22,407 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:26:22,407 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413898226]
[2023-11-29 04:26:22,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:22,408 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:26:23,030 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:26:23,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601614614]
[2023-11-29 04:26:23,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:26:23,032 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:26:23,032 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:26:23,033 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:26:23,036 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 04:26:40,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:26:41,017 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42166 conjuncts, 84 conjunts are in the unsatisfiable core
[2023-11-29 04:26:41,136 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:27:20,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:27:20,760 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:27:20,760 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:27:20,760 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413898226]
[2023-11-29 04:27:20,760 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:27:20,760 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601614614]
[2023-11-29 04:27:20,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [601614614] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:27:20,761 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:27:20,763 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-29 04:27:20,763 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464954010]
[2023-11-29 04:27:20,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:27:20,768 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-29 04:27:20,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:27:20,772 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-29 04:27:20,772 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210
[2023-11-29 04:27:20,775 INFO  L87              Difference]: Start difference. First operand 19690 states and 32785 transitions. Second operand  has 15 states, 15 states have (on average 638.1333333333333) internal successors, (9572), 14 states have internal predecessors, (9572), 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)
[2023-11-29 04:28:02,479 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:28:02,479 INFO  L93              Difference]: Finished difference Result 63883 states and 106396 transitions.
[2023-11-29 04:28:02,480 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-11-29 04:28:02,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 638.1333333333333) internal successors, (9572), 14 states have internal predecessors, (9572), 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 9572
[2023-11-29 04:28:02,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:28:02,519 INFO  L225             Difference]: With dead ends: 63883
[2023-11-29 04:28:02,520 INFO  L226             Difference]: Without dead ends: 50228
[2023-11-29 04:28:02,532 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9583 GetRequests, 9558 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702
[2023-11-29 04:28:02,533 INFO  L413           NwaCegarLoop]: 17527 mSDtfsCounter, 315258 mSDsluCounter, 192156 mSDsCounter, 0 mSdLazyCounter, 64492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315258 SdHoareTripleChecker+Valid, 209683 SdHoareTripleChecker+Invalid, 64494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:28:02,533 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [315258 Valid, 209683 Invalid, 64494 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [2 Valid, 64492 Invalid, 0 Unknown, 0 Unchecked, 38.5s Time]
[2023-11-29 04:28:02,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50228 states.
[2023-11-29 04:28:02,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50228 to 19701.
[2023-11-29 04:28:02,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19701 states, 19700 states have (on average 1.6649746192893402) internal successors, (32800), 19700 states have internal predecessors, (32800), 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)
[2023-11-29 04:28:02,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19701 states to 19701 states and 32800 transitions.
[2023-11-29 04:28:02,839 INFO  L78                 Accepts]: Start accepts. Automaton has 19701 states and 32800 transitions. Word has length 9572
[2023-11-29 04:28:02,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:28:02,841 INFO  L495      AbstractCegarLoop]: Abstraction has 19701 states and 32800 transitions.
[2023-11-29 04:28:02,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 638.1333333333333) internal successors, (9572), 14 states have internal predecessors, (9572), 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)
[2023-11-29 04:28:02,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 19701 states and 32800 transitions.
[2023-11-29 04:28:03,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9574
[2023-11-29 04:28:03,219 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:28:03,221 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 04:28:03,362 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-11-29 04:28:03,421 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:03,422 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:28:03,422 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:28:03,423 INFO  L85        PathProgramCache]: Analyzing trace with hash -1782551621, now seen corresponding path program 1 times
[2023-11-29 04:28:03,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:28:03,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192874615]
[2023-11-29 04:28:03,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:03,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:28:04,119 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:28:04,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161853065]
[2023-11-29 04:28:04,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:28:04,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:28:04,121 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:28:04,122 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:28:04,123 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d17698-662d-47cc-b40c-5b4018a1e4b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process