./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/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 e3c1f7014d5314bde25c1aa8cf5551c74e4d6548e2aa9ecccb8357ae0b6b5485
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 06:48:45,068 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 06:48:45,136 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 06:48:45,140 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 06:48:45,140 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 06:48:45,161 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 06:48:45,162 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 06:48:45,162 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 06:48:45,163 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 06:48:45,163 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 06:48:45,164 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 06:48:45,164 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 06:48:45,165 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 06:48:45,166 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 06:48:45,166 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 06:48:45,167 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 06:48:45,167 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 06:48:45,168 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 06:48:45,168 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 06:48:45,169 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 06:48:45,170 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 06:48:45,170 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 06:48:45,171 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 06:48:45,171 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 06:48:45,172 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 06:48:45,172 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 06:48:45,172 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 06:48:45,173 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 06:48:45,173 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:48:45,174 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 06:48:45,174 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 06:48:45,175 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 06:48:45,175 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 06:48:45,175 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 06:48:45,175 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 06:48:45,176 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 06:48:45,176 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 06:48:45,176 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 06:48:45,176 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 06:48:45,176 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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/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 -> e3c1f7014d5314bde25c1aa8cf5551c74e4d6548e2aa9ecccb8357ae0b6b5485
[2023-11-29 06:48:45,383 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 06:48:45,427 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 06:48:45,429 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 06:48:45,431 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 06:48:45,431 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 06:48:45,432 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c
[2023-11-29 06:48:48,123 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 06:48:48,662 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 06:48:48,662 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c
[2023-11-29 06:48:48,711 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/data/f09f25617/312bec149cc44c4aa74a7c1467ee7469/FLAGb490a1c14
[2023-11-29 06:48:48,725 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/data/f09f25617/312bec149cc44c4aa74a7c1467ee7469
[2023-11-29 06:48:48,727 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 06:48:48,729 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 06:48:48,730 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 06:48:48,730 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 06:48:48,735 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 06:48:48,736 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:48:48" (1/1) ...
[2023-11-29 06:48:48,737 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f878cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:48, skipping insertion in model container
[2023-11-29 06:48:48,737 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:48:48" (1/1) ...
[2023-11-29 06:48:48,937 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 06:48:49,281 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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c[1180,1193]
[2023-11-29 06:48:50,819 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:48:50,836 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 06:48:50,849 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_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c[1180,1193]
[2023-11-29 06:48:51,977 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:48:51,994 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 06:48:51,995 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51 WrapperNode
[2023-11-29 06:48:51,995 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 06:48:51,997 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 06:48:51,997 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 06:48:51,997 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 06:48:52,005 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:52,316 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:56,191 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56168
[2023-11-29 06:48:56,192 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 06:48:56,192 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 06:48:56,192 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 06:48:56,192 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 06:48:56,201 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:56,201 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:56,949 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:57,477 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 06:48:57,477 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:57,478 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:58,440 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:58,589 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:58,752 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:58,880 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:59,506 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 06:48:59,507 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 06:48:59,507 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 06:48:59,507 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 06:48:59,508 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (1/1) ...
[2023-11-29 06:48:59,514 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:48:59,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:48:59,535 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 06:48:59,543 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 06:48:59,572 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 06:48:59,572 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 06:48:59,572 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 06:48:59,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 06:49:01,700 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 06:49:01,702 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 06:49:24,628 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 06:49:25,189 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 06:49:25,189 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 06:49:25,194 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:25 BoogieIcfgContainer
[2023-11-29 06:49:25,194 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 06:49:25,196 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 06:49:25,197 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 06:49:25,199 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 06:49:25,200 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:48:48" (1/3) ...
[2023-11-29 06:49:25,200 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad6676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:49:25, skipping insertion in model container
[2023-11-29 06:49:25,200 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:51" (2/3) ...
[2023-11-29 06:49:25,201 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad6676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:49:25, skipping insertion in model container
[2023-11-29 06:49:25,201 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:25" (3/3) ...
[2023-11-29 06:49:25,202 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c
[2023-11-29 06:49:25,216 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 06:49:25,216 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 06:49:25,365 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 06:49:25,370 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;@72448115, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 06:49:25,371 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 06:49:25,400 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12142 states, 12140 states have (on average 1.6668863261943987) internal successors, (20236), 12141 states have internal predecessors, (20236), 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 06:49:25,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1267
[2023-11-29 06:49:25,460 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:49:25,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:25,462 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:49:25,466 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:49:25,467 INFO  L85        PathProgramCache]: Analyzing trace with hash -471527210, now seen corresponding path program 1 times
[2023-11-29 06:49:25,474 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:49:25,474 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212080135]
[2023-11-29 06:49:25,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:25,475 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:49:26,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:49:31,590 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 06:49:31,591 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:49:31,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212080135]
[2023-11-29 06:49:31,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212080135] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:49:31,592 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:49:31,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:49:31,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757453106]
[2023-11-29 06:49:31,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:49:31,600 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:49:31,600 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:49:31,625 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:49:31,626 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:49:31,650 INFO  L87              Difference]: Start difference. First operand  has 12142 states, 12140 states have (on average 1.6668863261943987) internal successors, (20236), 12141 states have internal predecessors, (20236), 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 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 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 06:49:32,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:49:32,167 INFO  L93              Difference]: Finished difference Result 23755 states and 39593 transitions.
[2023-11-29 06:49:32,168 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:49:32,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 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 1266
[2023-11-29 06:49:32,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:49:32,241 INFO  L225             Difference]: With dead ends: 23755
[2023-11-29 06:49:32,241 INFO  L226             Difference]: Without dead ends: 12142
[2023-11-29 06:49:32,257 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 06:49:32,261 INFO  L413           NwaCegarLoop]: 20229 mSDtfsCounter, 1 mSDsluCounter, 40453 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60682 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:49:32,261 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60682 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:49:32,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12142 states.
[2023-11-29 06:49:32,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12142.
[2023-11-29 06:49:32,592 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12142 states, 12141 states have (on average 1.6665843011284078) internal successors, (20234), 12141 states have internal predecessors, (20234), 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 06:49:32,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 20234 transitions.
[2023-11-29 06:49:32,639 INFO  L78                 Accepts]: Start accepts. Automaton has 12142 states and 20234 transitions. Word has length 1266
[2023-11-29 06:49:32,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:49:32,642 INFO  L495      AbstractCegarLoop]: Abstraction has 12142 states and 20234 transitions.
[2023-11-29 06:49:32,643 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 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 06:49:32,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 12142 states and 20234 transitions.
[2023-11-29 06:49:32,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1268
[2023-11-29 06:49:32,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:49:32,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:32,721 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 06:49:32,722 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:49:32,722 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:49:32,723 INFO  L85        PathProgramCache]: Analyzing trace with hash -1730709102, now seen corresponding path program 1 times
[2023-11-29 06:49:32,723 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:49:32,723 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259792255]
[2023-11-29 06:49:32,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:32,724 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:49:33,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:49:35,971 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 06:49:35,971 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:49:35,971 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259792255]
[2023-11-29 06:49:35,971 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259792255] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:49:35,972 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:49:35,972 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:49:35,972 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516003709]
[2023-11-29 06:49:35,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:49:35,976 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:49:35,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:49:35,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:49:35,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:49:35,980 INFO  L87              Difference]: Start difference. First operand 12142 states and 20234 transitions. Second operand  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 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 06:49:36,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:49:36,488 INFO  L93              Difference]: Finished difference Result 23758 states and 39591 transitions.
[2023-11-29 06:49:36,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:49:36,489 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 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 1267
[2023-11-29 06:49:36,492 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:49:36,553 INFO  L225             Difference]: With dead ends: 23758
[2023-11-29 06:49:36,553 INFO  L226             Difference]: Without dead ends: 12145
[2023-11-29 06:49:36,569 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 06:49:36,570 INFO  L413           NwaCegarLoop]: 20229 mSDtfsCounter, 1 mSDsluCounter, 40451 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60680 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:49:36,571 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60680 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:49:36,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12145 states.
[2023-11-29 06:49:36,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 12144.
[2023-11-29 06:49:36,801 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12144 states, 12143 states have (on average 1.6664745120645639) internal successors, (20236), 12143 states have internal predecessors, (20236), 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 06:49:36,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12144 states to 12144 states and 20236 transitions.
[2023-11-29 06:49:36,836 INFO  L78                 Accepts]: Start accepts. Automaton has 12144 states and 20236 transitions. Word has length 1267
[2023-11-29 06:49:36,838 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:49:36,838 INFO  L495      AbstractCegarLoop]: Abstraction has 12144 states and 20236 transitions.
[2023-11-29 06:49:36,839 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 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 06:49:36,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 12144 states and 20236 transitions.
[2023-11-29 06:49:36,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1269
[2023-11-29 06:49:36,855 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:49:36,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:36,857 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 06:49:36,857 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:49:36,857 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:49:36,858 INFO  L85        PathProgramCache]: Analyzing trace with hash -547792142, now seen corresponding path program 1 times
[2023-11-29 06:49:36,859 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:49:36,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811060945]
[2023-11-29 06:49:36,859 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:36,860 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:49:37,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:49:39,592 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 06:49:39,593 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:49:39,593 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811060945]
[2023-11-29 06:49:39,593 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811060945] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:49:39,593 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:49:39,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:49:39,594 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793881719]
[2023-11-29 06:49:39,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:49:39,596 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:49:39,596 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:49:39,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:49:39,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:49:39,599 INFO  L87              Difference]: Start difference. First operand 12144 states and 20236 transitions. Second operand  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 06:49:40,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:49:40,178 INFO  L93              Difference]: Finished difference Result 35368 states and 58937 transitions.
[2023-11-29 06:49:40,178 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 06:49:40,179 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 1268
[2023-11-29 06:49:40,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:49:40,217 INFO  L225             Difference]: With dead ends: 35368
[2023-11-29 06:49:40,218 INFO  L226             Difference]: Without dead ends: 23753
[2023-11-29 06:49:40,234 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:49:40,236 INFO  L413           NwaCegarLoop]: 22494 mSDtfsCounter, 19342 mSDsluCounter, 42714 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19342 SdHoareTripleChecker+Valid, 65208 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:49:40,236 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19342 Valid, 65208 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:49:40,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23753 states.
[2023-11-29 06:49:40,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 12146.
[2023-11-29 06:49:40,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12146 states, 12145 states have (on average 1.6663647591601483) internal successors, (20238), 12145 states have internal predecessors, (20238), 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 06:49:40,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12146 states to 12146 states and 20238 transitions.
[2023-11-29 06:49:40,500 INFO  L78                 Accepts]: Start accepts. Automaton has 12146 states and 20238 transitions. Word has length 1268
[2023-11-29 06:49:40,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:49:40,502 INFO  L495      AbstractCegarLoop]: Abstraction has 12146 states and 20238 transitions.
[2023-11-29 06:49:40,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 06:49:40,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 12146 states and 20238 transitions.
[2023-11-29 06:49:40,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1270
[2023-11-29 06:49:40,519 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:49:40,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:40,521 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 06:49:40,521 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:49:40,522 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:49:40,522 INFO  L85        PathProgramCache]: Analyzing trace with hash 87613818, now seen corresponding path program 1 times
[2023-11-29 06:49:40,522 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:49:40,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105013864]
[2023-11-29 06:49:40,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:40,523 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:49:41,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:49:43,156 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 06:49:43,157 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:49:43,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105013864]
[2023-11-29 06:49:43,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105013864] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:49:43,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:49:43,158 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:49:43,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064932620]
[2023-11-29 06:49:43,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:49:43,160 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:49:43,160 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:49:43,162 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:49:43,162 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:49:43,162 INFO  L87              Difference]: Start difference. First operand 12146 states and 20238 transitions. Second operand  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 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 06:49:43,787 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:49:43,788 INFO  L93              Difference]: Finished difference Result 36733 states and 61208 transitions.
[2023-11-29 06:49:43,788 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:49:43,789 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 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 1269
[2023-11-29 06:49:43,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:49:43,813 INFO  L225             Difference]: With dead ends: 36733
[2023-11-29 06:49:43,813 INFO  L226             Difference]: Without dead ends: 25116
[2023-11-29 06:49:43,826 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:49:43,827 INFO  L413           NwaCegarLoop]: 22493 mSDtfsCounter, 79266 mSDsluCounter, 40452 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79266 SdHoareTripleChecker+Valid, 62945 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:49:43,828 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79266 Valid, 62945 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:49:43,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25116 states.
[2023-11-29 06:49:44,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25116 to 13505.
[2023-11-29 06:49:44,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13505 states, 13504 states have (on average 1.6663951421800949) internal successors, (22503), 13504 states have internal predecessors, (22503), 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 06:49:44,037 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 22503 transitions.
[2023-11-29 06:49:44,038 INFO  L78                 Accepts]: Start accepts. Automaton has 13505 states and 22503 transitions. Word has length 1269
[2023-11-29 06:49:44,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:49:44,039 INFO  L495      AbstractCegarLoop]: Abstraction has 13505 states and 22503 transitions.
[2023-11-29 06:49:44,040 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 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 06:49:44,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 13505 states and 22503 transitions.
[2023-11-29 06:49:44,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8997
[2023-11-29 06:49:44,475 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:49:44,481 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]
[2023-11-29 06:49:44,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 06:49:44,482 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:49:44,482 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:49:44,486 INFO  L85        PathProgramCache]: Analyzing trace with hash 1246716150, now seen corresponding path program 1 times
[2023-11-29 06:49:44,486 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:49:44,486 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001714267]
[2023-11-29 06:49:44,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:44,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:49:45,541 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:49:45,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8657263]
[2023-11-29 06:49:45,543 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:49:45,543 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:49:45,544 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:49:45,545 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:49:45,552 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 06:49:58,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:49:58,841 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45116 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:49:59,077 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:50:00,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked.
[2023-11-29 06:50:00,040 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:50:00,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:50:00,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001714267]
[2023-11-29 06:50:00,040 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:50:00,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8657263]
[2023-11-29 06:50:00,041 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [8657263] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:50:00,041 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:50:00,044 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:50:00,044 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942126510]
[2023-11-29 06:50:00,045 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:50:00,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:50:00,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:50:00,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:50:00,065 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:50:00,068 INFO  L87              Difference]: Start difference. First operand 13505 states and 22503 transitions. Second operand  has 7 states, 7 states have (on average 1156.142857142857) internal successors, (8093), 7 states have internal predecessors, (8093), 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 06:50:01,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:50:01,101 INFO  L93              Difference]: Finished difference Result 36734 states and 61209 transitions.
[2023-11-29 06:50:01,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:50:01,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1156.142857142857) internal successors, (8093), 7 states have internal predecessors, (8093), 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 8996
[2023-11-29 06:50:01,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:50:01,165 INFO  L225             Difference]: With dead ends: 36734
[2023-11-29 06:50:01,165 INFO  L226             Difference]: Without dead ends: 25116
[2023-11-29 06:50:01,183 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9005 GetRequests, 8993 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:50:01,184 INFO  L413           NwaCegarLoop]: 22486 mSDtfsCounter, 56304 mSDsluCounter, 87668 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56304 SdHoareTripleChecker+Valid, 110154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:50:01,185 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56304 Valid, 110154 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 06:50:01,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25116 states.
[2023-11-29 06:50:01,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25116 to 13507.
[2023-11-29 06:50:01,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13507 states, 13506 states have (on average 1.6662964608322228) internal successors, (22505), 13506 states have internal predecessors, (22505), 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 06:50:01,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 22505 transitions.
[2023-11-29 06:50:01,568 INFO  L78                 Accepts]: Start accepts. Automaton has 13507 states and 22505 transitions. Word has length 8996
[2023-11-29 06:50:01,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:50:01,579 INFO  L495      AbstractCegarLoop]: Abstraction has 13507 states and 22505 transitions.
[2023-11-29 06:50:01,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1156.142857142857) internal successors, (8093), 7 states have internal predecessors, (8093), 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 06:50:01,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 13507 states and 22505 transitions.
[2023-11-29 06:50:02,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8998
[2023-11-29 06:50:02,449 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:50:02,455 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]
[2023-11-29 06:50:02,575 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 06:50:02,671 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:02,671 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:50:02,671 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:50:02,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -205300592, now seen corresponding path program 1 times
[2023-11-29 06:50:02,675 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:50:02,675 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216434348]
[2023-11-29 06:50:02,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:02,676 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:50:03,938 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:50:03,938 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588205535]
[2023-11-29 06:50:03,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:03,941 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:03,941 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:50:03,942 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:50:03,943 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 06:50:15,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:50:16,121 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45119 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:50:16,286 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:50:17,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked.
[2023-11-29 06:50:17,028 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:50:17,029 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:50:17,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216434348]
[2023-11-29 06:50:17,029 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:50:17,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588205535]
[2023-11-29 06:50:17,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [588205535] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:50:17,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:50:17,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:50:17,032 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705324128]
[2023-11-29 06:50:17,032 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:50:17,043 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:50:17,043 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:50:17,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:50:17,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:50:17,055 INFO  L87              Difference]: Start difference. First operand 13507 states and 22505 transitions. Second operand  has 7 states, 7 states have (on average 1156.5714285714287) internal successors, (8096), 7 states have internal predecessors, (8096), 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 06:50:17,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:50:17,992 INFO  L93              Difference]: Finished difference Result 36740 states and 61215 transitions.
[2023-11-29 06:50:17,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:50:17,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1156.5714285714287) internal successors, (8096), 7 states have internal predecessors, (8096), 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 8997
[2023-11-29 06:50:18,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:50:18,041 INFO  L225             Difference]: With dead ends: 36740
[2023-11-29 06:50:18,042 INFO  L226             Difference]: Without dead ends: 25117
[2023-11-29 06:50:18,052 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9006 GetRequests, 8994 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:50:18,053 INFO  L413           NwaCegarLoop]: 22481 mSDtfsCounter, 56303 mSDsluCounter, 87653 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56303 SdHoareTripleChecker+Valid, 110134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:50:18,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56303 Valid, 110134 Invalid, 48 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 06:50:18,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25117 states.
[2023-11-29 06:50:18,250 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25117 to 13509.
[2023-11-29 06:50:18,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13509 states, 13508 states have (on average 1.6661978087059521) internal successors, (22507), 13508 states have internal predecessors, (22507), 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 06:50:18,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 22507 transitions.
[2023-11-29 06:50:18,296 INFO  L78                 Accepts]: Start accepts. Automaton has 13509 states and 22507 transitions. Word has length 8997
[2023-11-29 06:50:18,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:50:18,304 INFO  L495      AbstractCegarLoop]: Abstraction has 13509 states and 22507 transitions.
[2023-11-29 06:50:18,306 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1156.5714285714287) internal successors, (8096), 7 states have internal predecessors, (8096), 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 06:50:18,307 INFO  L276                IsEmpty]: Start isEmpty. Operand 13509 states and 22507 transitions.
[2023-11-29 06:50:18,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8999
[2023-11-29 06:50:18,718 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:50:18,722 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]
[2023-11-29 06:50:18,837 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 06:50:18,923 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:18,923 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:50:18,923 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:50:18,926 INFO  L85        PathProgramCache]: Analyzing trace with hash 1765610844, now seen corresponding path program 1 times
[2023-11-29 06:50:18,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:50:18,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107459456]
[2023-11-29 06:50:18,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:18,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:50:19,740 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:50:19,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228471474]
[2023-11-29 06:50:19,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:19,742 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:19,742 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:50:19,743 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:50:19,744 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 06:50:31,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:50:31,626 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45122 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:50:31,764 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:50:32,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked.
[2023-11-29 06:50:32,484 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:50:32,484 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:50:32,484 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107459456]
[2023-11-29 06:50:32,484 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:50:32,484 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228471474]
[2023-11-29 06:50:32,484 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228471474] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:50:32,484 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:50:32,488 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:50:32,488 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195412796]
[2023-11-29 06:50:32,488 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:50:32,494 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:50:32,494 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:50:32,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:50:32,500 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:50:32,502 INFO  L87              Difference]: Start difference. First operand 13509 states and 22507 transitions. Second operand  has 7 states, 7 states have (on average 1157.0) internal successors, (8099), 7 states have internal predecessors, (8099), 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 06:50:33,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:50:33,267 INFO  L93              Difference]: Finished difference Result 36746 states and 61221 transitions.
[2023-11-29 06:50:33,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:50:33,270 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1157.0) internal successors, (8099), 7 states have internal predecessors, (8099), 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 8998
[2023-11-29 06:50:33,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:50:33,301 INFO  L225             Difference]: With dead ends: 36746
[2023-11-29 06:50:33,301 INFO  L226             Difference]: Without dead ends: 25118
[2023-11-29 06:50:33,310 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9007 GetRequests, 8995 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:50:33,311 INFO  L413           NwaCegarLoop]: 22476 mSDtfsCounter, 56302 mSDsluCounter, 87638 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56302 SdHoareTripleChecker+Valid, 110114 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:50:33,312 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56302 Valid, 110114 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 06:50:33,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25118 states.
[2023-11-29 06:50:33,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25118 to 13511.
[2023-11-29 06:50:33,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13511 states, 13510 states have (on average 1.666099185788305) internal successors, (22509), 13510 states have internal predecessors, (22509), 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 06:50:33,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13511 states to 13511 states and 22509 transitions.
[2023-11-29 06:50:33,491 INFO  L78                 Accepts]: Start accepts. Automaton has 13511 states and 22509 transitions. Word has length 8998
[2023-11-29 06:50:33,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:50:33,497 INFO  L495      AbstractCegarLoop]: Abstraction has 13511 states and 22509 transitions.
[2023-11-29 06:50:33,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1157.0) internal successors, (8099), 7 states have internal predecessors, (8099), 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 06:50:33,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 13511 states and 22509 transitions.
[2023-11-29 06:50:33,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9000
[2023-11-29 06:50:33,981 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:50:33,985 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]
[2023-11-29 06:50:34,102 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 06:50:34,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:34,186 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:50:34,186 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:50:34,191 INFO  L85        PathProgramCache]: Analyzing trace with hash 1824431788, now seen corresponding path program 1 times
[2023-11-29 06:50:34,191 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:50:34,191 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249920839]
[2023-11-29 06:50:34,192 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:34,192 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:50:35,019 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:50:35,019 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510923167]
[2023-11-29 06:50:35,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:35,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:35,021 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:50:35,022 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:50:35,023 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 06:50:46,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:50:46,733 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45126 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:50:46,895 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:50:47,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked.
[2023-11-29 06:50:47,589 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:50:47,589 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:50:47,589 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249920839]
[2023-11-29 06:50:47,589 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:50:47,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510923167]
[2023-11-29 06:50:47,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [510923167] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:50:47,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:50:47,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:50:47,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879944275]
[2023-11-29 06:50:47,593 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:50:47,599 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:50:47,599 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:50:47,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:50:47,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:50:47,606 INFO  L87              Difference]: Start difference. First operand 13511 states and 22509 transitions. Second operand  has 7 states, 7 states have (on average 1157.4285714285713) internal successors, (8102), 7 states have internal predecessors, (8102), 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 06:50:48,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:50:48,315 INFO  L93              Difference]: Finished difference Result 36752 states and 61227 transitions.
[2023-11-29 06:50:48,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:50:48,317 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1157.4285714285713) internal successors, (8102), 7 states have internal predecessors, (8102), 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 8999
[2023-11-29 06:50:48,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:50:48,340 INFO  L225             Difference]: With dead ends: 36752
[2023-11-29 06:50:48,340 INFO  L226             Difference]: Without dead ends: 25119
[2023-11-29 06:50:48,349 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9008 GetRequests, 8996 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:50:48,350 INFO  L413           NwaCegarLoop]: 22471 mSDtfsCounter, 56301 mSDsluCounter, 87623 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56301 SdHoareTripleChecker+Valid, 110094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:50:48,350 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56301 Valid, 110094 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:50:48,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25119 states.
[2023-11-29 06:50:48,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25119 to 13513.
[2023-11-29 06:50:48,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13513 states, 13512 states have (on average 1.6660005920663115) internal successors, (22511), 13512 states have internal predecessors, (22511), 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 06:50:48,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 22511 transitions.
[2023-11-29 06:50:48,575 INFO  L78                 Accepts]: Start accepts. Automaton has 13513 states and 22511 transitions. Word has length 8999
[2023-11-29 06:50:48,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:50:48,580 INFO  L495      AbstractCegarLoop]: Abstraction has 13513 states and 22511 transitions.
[2023-11-29 06:50:48,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1157.4285714285713) internal successors, (8102), 7 states have internal predecessors, (8102), 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 06:50:48,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 13513 states and 22511 transitions.
[2023-11-29 06:50:48,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9001
[2023-11-29 06:50:48,984 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:50:48,988 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]
[2023-11-29 06:50:49,104 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 06:50:49,191 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-29 06:50:49,191 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:50:49,191 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:50:49,194 INFO  L85        PathProgramCache]: Analyzing trace with hash -1085219004, now seen corresponding path program 1 times
[2023-11-29 06:50:49,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:50:49,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866998057]
[2023-11-29 06:50:49,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:49,195 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:50:49,980 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:50:49,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949005761]
[2023-11-29 06:50:49,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:50:49,982 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:50:49,982 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:50:49,983 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:50:49,984 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 06:51:01,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:51:01,933 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45129 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:51:02,046 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:51:02,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked.
[2023-11-29 06:51:02,569 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:51:02,569 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:51:02,569 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866998057]
[2023-11-29 06:51:02,569 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:51:02,569 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949005761]
[2023-11-29 06:51:02,569 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [949005761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:51:02,570 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:51:02,572 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:51:02,572 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013672448]
[2023-11-29 06:51:02,572 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:51:02,578 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:51:02,578 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:51:02,583 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:51:02,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:51:02,585 INFO  L87              Difference]: Start difference. First operand 13513 states and 22511 transitions. Second operand  has 7 states, 7 states have (on average 1157.857142857143) internal successors, (8105), 7 states have internal predecessors, (8105), 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 06:51:03,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:51:03,364 INFO  L93              Difference]: Finished difference Result 36758 states and 61233 transitions.
[2023-11-29 06:51:03,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:51:03,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1157.857142857143) internal successors, (8105), 7 states have internal predecessors, (8105), 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 9000
[2023-11-29 06:51:03,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:51:03,383 INFO  L225             Difference]: With dead ends: 36758
[2023-11-29 06:51:03,383 INFO  L226             Difference]: Without dead ends: 25120
[2023-11-29 06:51:03,388 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9009 GetRequests, 8997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:51:03,388 INFO  L413           NwaCegarLoop]: 22466 mSDtfsCounter, 56300 mSDsluCounter, 87608 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56300 SdHoareTripleChecker+Valid, 110074 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:51:03,388 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56300 Valid, 110074 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:51:03,406 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25120 states.
[2023-11-29 06:51:03,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25120 to 13515.
[2023-11-29 06:51:03,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13515 states, 13514 states have (on average 1.665902027527009) internal successors, (22513), 13514 states have internal predecessors, (22513), 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 06:51:03,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13515 states to 13515 states and 22513 transitions.
[2023-11-29 06:51:03,540 INFO  L78                 Accepts]: Start accepts. Automaton has 13515 states and 22513 transitions. Word has length 9000
[2023-11-29 06:51:03,545 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:51:03,545 INFO  L495      AbstractCegarLoop]: Abstraction has 13515 states and 22513 transitions.
[2023-11-29 06:51:03,546 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1157.857142857143) internal successors, (8105), 7 states have internal predecessors, (8105), 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 06:51:03,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 13515 states and 22513 transitions.
[2023-11-29 06:51:03,908 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9002
[2023-11-29 06:51:03,908 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:51:03,911 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]
[2023-11-29 06:51:04,026 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 06:51:04,112 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 06:51:04,112 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:51:04,112 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:51:04,115 INFO  L85        PathProgramCache]: Analyzing trace with hash 1392008006, now seen corresponding path program 1 times
[2023-11-29 06:51:04,115 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:51:04,115 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353920205]
[2023-11-29 06:51:04,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:04,116 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:51:04,952 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:51:04,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260055542]
[2023-11-29 06:51:04,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:04,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:04,954 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:51:04,955 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:51:04,956 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 06:51:16,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:51:16,925 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45132 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:51:17,194 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:51:17,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked.
[2023-11-29 06:51:17,656 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:51:17,656 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:51:17,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353920205]
[2023-11-29 06:51:17,657 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:51:17,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260055542]
[2023-11-29 06:51:17,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260055542] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:51:17,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:51:17,660 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:51:17,660 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904740441]
[2023-11-29 06:51:17,660 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:51:17,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:51:17,666 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:51:17,673 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:51:17,673 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:51:17,675 INFO  L87              Difference]: Start difference. First operand 13515 states and 22513 transitions. Second operand  has 7 states, 7 states have (on average 1158.2857142857142) internal successors, (8108), 7 states have internal predecessors, (8108), 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 06:51:18,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:51:18,446 INFO  L93              Difference]: Finished difference Result 36764 states and 61239 transitions.
[2023-11-29 06:51:18,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:51:18,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1158.2857142857142) internal successors, (8108), 7 states have internal predecessors, (8108), 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 9001
[2023-11-29 06:51:18,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:51:18,469 INFO  L225             Difference]: With dead ends: 36764
[2023-11-29 06:51:18,469 INFO  L226             Difference]: Without dead ends: 25121
[2023-11-29 06:51:18,475 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9010 GetRequests, 8998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:51:18,476 INFO  L413           NwaCegarLoop]: 22461 mSDtfsCounter, 56299 mSDsluCounter, 87593 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56299 SdHoareTripleChecker+Valid, 110054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:51:18,476 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56299 Valid, 110054 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:51:18,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25121 states.
[2023-11-29 06:51:18,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25121 to 13517.
[2023-11-29 06:51:18,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13517 states, 13516 states have (on average 1.665803492157443) internal successors, (22515), 13516 states have internal predecessors, (22515), 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 06:51:18,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13517 states to 13517 states and 22515 transitions.
[2023-11-29 06:51:18,633 INFO  L78                 Accepts]: Start accepts. Automaton has 13517 states and 22515 transitions. Word has length 9001
[2023-11-29 06:51:18,638 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:51:18,638 INFO  L495      AbstractCegarLoop]: Abstraction has 13517 states and 22515 transitions.
[2023-11-29 06:51:18,639 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1158.2857142857142) internal successors, (8108), 7 states have internal predecessors, (8108), 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 06:51:18,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 13517 states and 22515 transitions.
[2023-11-29 06:51:18,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9003
[2023-11-29 06:51:18,992 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:51:18,995 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]
[2023-11-29 06:51:19,110 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 06:51:19,195 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 06:51:19,196 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:51:19,196 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:51:19,199 INFO  L85        PathProgramCache]: Analyzing trace with hash -1681385558, now seen corresponding path program 1 times
[2023-11-29 06:51:19,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:51:19,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066952591]
[2023-11-29 06:51:19,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:19,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:51:20,011 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:51:20,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445903073]
[2023-11-29 06:51:20,013 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:20,013 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:20,013 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:51:20,014 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:51:20,015 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 06:51:31,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:51:31,935 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45135 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:51:32,051 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:51:32,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked.
[2023-11-29 06:51:32,562 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:51:32,562 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:51:32,562 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066952591]
[2023-11-29 06:51:32,562 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:51:32,562 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445903073]
[2023-11-29 06:51:32,562 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [445903073] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:51:32,563 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:51:32,565 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:51:32,565 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305641607]
[2023-11-29 06:51:32,565 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:51:32,570 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:51:32,571 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:51:32,576 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:51:32,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:51:32,578 INFO  L87              Difference]: Start difference. First operand 13517 states and 22515 transitions. Second operand  has 8 states, 8 states have (on average 1013.875) internal successors, (8111), 8 states have internal predecessors, (8111), 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 06:51:33,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:51:33,398 INFO  L93              Difference]: Finished difference Result 36770 states and 61245 transitions.
[2023-11-29 06:51:33,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:51:33,401 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1013.875) internal successors, (8111), 8 states have internal predecessors, (8111), 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 9002
[2023-11-29 06:51:33,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:51:33,424 INFO  L225             Difference]: With dead ends: 36770
[2023-11-29 06:51:33,424 INFO  L226             Difference]: Without dead ends: 25122
[2023-11-29 06:51:33,433 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9011 GetRequests, 8998 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 06:51:33,433 INFO  L413           NwaCegarLoop]: 22456 mSDtfsCounter, 56298 mSDsluCounter, 106896 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56298 SdHoareTripleChecker+Valid, 129352 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:51:33,434 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56298 Valid, 129352 Invalid, 54 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:51:33,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25122 states.
[2023-11-29 06:51:33,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 13519.
[2023-11-29 06:51:33,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13519 states, 13518 states have (on average 1.6657049859446664) internal successors, (22517), 13518 states have internal predecessors, (22517), 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 06:51:33,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 22517 transitions.
[2023-11-29 06:51:33,656 INFO  L78                 Accepts]: Start accepts. Automaton has 13519 states and 22517 transitions. Word has length 9002
[2023-11-29 06:51:33,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:51:33,661 INFO  L495      AbstractCegarLoop]: Abstraction has 13519 states and 22517 transitions.
[2023-11-29 06:51:33,662 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1013.875) internal successors, (8111), 8 states have internal predecessors, (8111), 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 06:51:33,663 INFO  L276                IsEmpty]: Start isEmpty. Operand 13519 states and 22517 transitions.
[2023-11-29 06:51:34,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9004
[2023-11-29 06:51:34,036 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:51:34,038 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]
[2023-11-29 06:51:34,152 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 06:51:34,238 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:34,239 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:51:34,239 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:51:34,241 INFO  L85        PathProgramCache]: Analyzing trace with hash -2121267614, now seen corresponding path program 1 times
[2023-11-29 06:51:34,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:51:34,241 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754040355]
[2023-11-29 06:51:34,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:34,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:51:35,133 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:51:35,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783305109]
[2023-11-29 06:51:35,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:35,135 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:35,135 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:51:35,136 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:51:35,137 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 06:51:46,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:51:47,045 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45139 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:51:47,142 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:51:47,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked.
[2023-11-29 06:51:47,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:51:47,684 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:51:47,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754040355]
[2023-11-29 06:51:47,684 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:51:47,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783305109]
[2023-11-29 06:51:47,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783305109] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:51:47,684 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:51:47,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:51:47,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705219572]
[2023-11-29 06:51:47,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:51:47,692 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:51:47,692 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:51:47,698 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:51:47,698 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:51:47,700 INFO  L87              Difference]: Start difference. First operand 13519 states and 22517 transitions. Second operand  has 7 states, 7 states have (on average 1159.142857142857) internal successors, (8114), 7 states have internal predecessors, (8114), 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 06:51:48,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:51:48,409 INFO  L93              Difference]: Finished difference Result 36776 states and 61251 transitions.
[2023-11-29 06:51:48,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:51:48,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1159.142857142857) internal successors, (8114), 7 states have internal predecessors, (8114), 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 9003
[2023-11-29 06:51:48,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:51:48,435 INFO  L225             Difference]: With dead ends: 36776
[2023-11-29 06:51:48,435 INFO  L226             Difference]: Without dead ends: 25123
[2023-11-29 06:51:48,444 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9012 GetRequests, 9000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:51:48,444 INFO  L413           NwaCegarLoop]: 22451 mSDtfsCounter, 56297 mSDsluCounter, 87563 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56297 SdHoareTripleChecker+Valid, 110014 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:51:48,445 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56297 Valid, 110014 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:51:48,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25123 states.
[2023-11-29 06:51:48,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25123 to 13521.
[2023-11-29 06:51:48,597 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13521 states, 13520 states have (on average 1.6656065088757397) internal successors, (22519), 13520 states have internal predecessors, (22519), 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 06:51:48,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 22519 transitions.
[2023-11-29 06:51:48,612 INFO  L78                 Accepts]: Start accepts. Automaton has 13521 states and 22519 transitions. Word has length 9003
[2023-11-29 06:51:48,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:51:48,617 INFO  L495      AbstractCegarLoop]: Abstraction has 13521 states and 22519 transitions.
[2023-11-29 06:51:48,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1159.142857142857) internal successors, (8114), 7 states have internal predecessors, (8114), 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 06:51:48,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 13521 states and 22519 transitions.
[2023-11-29 06:51:48,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9005
[2023-11-29 06:51:48,980 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:51:48,982 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]
[2023-11-29 06:51:49,097 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-29 06:51:49,182 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:49,183 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:51:49,183 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:51:49,185 INFO  L85        PathProgramCache]: Analyzing trace with hash -9440622, now seen corresponding path program 1 times
[2023-11-29 06:51:49,185 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:51:49,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49879313]
[2023-11-29 06:51:49,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:49,187 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:51:50,010 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:51:50,010 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337654554]
[2023-11-29 06:51:50,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:51:50,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:51:50,012 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:51:50,012 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:51:50,013 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 06:52:01,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:52:02,008 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45142 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:52:02,100 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:52:02,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked.
[2023-11-29 06:52:02,590 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:52:02,591 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:52:02,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49879313]
[2023-11-29 06:52:02,591 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:52:02,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337654554]
[2023-11-29 06:52:02,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337654554] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:52:02,591 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:52:02,593 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:52:02,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546311146]
[2023-11-29 06:52:02,593 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:52:02,597 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:52:02,597 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:52:02,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:52:02,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:52:02,604 INFO  L87              Difference]: Start difference. First operand 13521 states and 22519 transitions. Second operand  has 7 states, 7 states have (on average 1159.5714285714287) internal successors, (8117), 7 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:52:03,310 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:52:03,311 INFO  L93              Difference]: Finished difference Result 36782 states and 61257 transitions.
[2023-11-29 06:52:03,311 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:52:03,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1159.5714285714287) internal successors, (8117), 7 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9004
[2023-11-29 06:52:03,318 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:52:03,336 INFO  L225             Difference]: With dead ends: 36782
[2023-11-29 06:52:03,336 INFO  L226             Difference]: Without dead ends: 25124
[2023-11-29 06:52:03,345 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9013 GetRequests, 9001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:52:03,345 INFO  L413           NwaCegarLoop]: 22446 mSDtfsCounter, 56296 mSDsluCounter, 87548 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56296 SdHoareTripleChecker+Valid, 109994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:52:03,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56296 Valid, 109994 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:52:03,369 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25124 states.
[2023-11-29 06:52:03,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25124 to 13523.
[2023-11-29 06:52:03,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13523 states, 13522 states have (on average 1.665508060937731) internal successors, (22521), 13522 states have internal predecessors, (22521), 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 06:52:03,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13523 states to 13523 states and 22521 transitions.
[2023-11-29 06:52:03,590 INFO  L78                 Accepts]: Start accepts. Automaton has 13523 states and 22521 transitions. Word has length 9004
[2023-11-29 06:52:03,594 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:52:03,594 INFO  L495      AbstractCegarLoop]: Abstraction has 13523 states and 22521 transitions.
[2023-11-29 06:52:03,596 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1159.5714285714287) internal successors, (8117), 7 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:52:03,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 13523 states and 22521 transitions.
[2023-11-29 06:52:03,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9006
[2023-11-29 06:52:03,963 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:52:03,965 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]
[2023-11-29 06:52:04,079 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 06:52:04,166 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 06:52:04,166 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:52:04,166 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:52:04,168 INFO  L85        PathProgramCache]: Analyzing trace with hash 1780195068, now seen corresponding path program 1 times
[2023-11-29 06:52:04,168 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:52:04,168 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732014191]
[2023-11-29 06:52:04,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:04,170 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:52:05,096 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:52:05,097 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137218665]
[2023-11-29 06:52:05,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:05,098 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:52:05,099 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:52:05,099 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:52:05,100 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 06:52:16,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:52:17,022 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45145 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:52:17,119 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:52:17,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked.
[2023-11-29 06:52:17,713 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:52:17,713 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:52:17,713 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732014191]
[2023-11-29 06:52:17,713 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:52:17,713 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137218665]
[2023-11-29 06:52:17,713 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137218665] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:52:17,713 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:52:17,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:52:17,717 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304173396]
[2023-11-29 06:52:17,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:52:17,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:52:17,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:52:17,727 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:52:17,727 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:52:17,729 INFO  L87              Difference]: Start difference. First operand 13523 states and 22521 transitions. Second operand  has 7 states, 7 states have (on average 1160.0) internal successors, (8120), 7 states have internal predecessors, (8120), 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 06:52:18,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:52:18,446 INFO  L93              Difference]: Finished difference Result 36788 states and 61263 transitions.
[2023-11-29 06:52:18,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:52:18,449 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1160.0) internal successors, (8120), 7 states have internal predecessors, (8120), 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 9005
[2023-11-29 06:52:18,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:52:18,472 INFO  L225             Difference]: With dead ends: 36788
[2023-11-29 06:52:18,472 INFO  L226             Difference]: Without dead ends: 25125
[2023-11-29 06:52:18,482 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9014 GetRequests, 9002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:52:18,482 INFO  L413           NwaCegarLoop]: 22441 mSDtfsCounter, 56295 mSDsluCounter, 87533 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56295 SdHoareTripleChecker+Valid, 109974 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:52:18,482 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56295 Valid, 109974 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:52:18,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25125 states.
[2023-11-29 06:52:18,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 13525.
[2023-11-29 06:52:18,692 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13525 states, 13524 states have (on average 1.6654096421177167) internal successors, (22523), 13524 states have internal predecessors, (22523), 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 06:52:18,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13525 states to 13525 states and 22523 transitions.
[2023-11-29 06:52:18,706 INFO  L78                 Accepts]: Start accepts. Automaton has 13525 states and 22523 transitions. Word has length 9005
[2023-11-29 06:52:18,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:52:18,710 INFO  L495      AbstractCegarLoop]: Abstraction has 13525 states and 22523 transitions.
[2023-11-29 06:52:18,712 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1160.0) internal successors, (8120), 7 states have internal predecessors, (8120), 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 06:52:18,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 13525 states and 22523 transitions.
[2023-11-29 06:52:19,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9007
[2023-11-29 06:52:19,065 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:52:19,067 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]
[2023-11-29 06:52:19,185 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 06:52:19,267 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 06:52:19,268 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:52:19,268 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:52:19,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 1040985848, now seen corresponding path program 1 times
[2023-11-29 06:52:19,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:52:19,270 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877963935]
[2023-11-29 06:52:19,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:19,270 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:52:20,085 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:52:20,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861513358]
[2023-11-29 06:52:20,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:20,087 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:52:20,087 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:52:20,087 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:52:20,088 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 06:52:31,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:52:32,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45148 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:52:32,171 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:52:32,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked.
[2023-11-29 06:52:32,599 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:52:32,599 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:52:32,599 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877963935]
[2023-11-29 06:52:32,599 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:52:32,599 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861513358]
[2023-11-29 06:52:32,599 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861513358] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:52:32,599 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:52:32,602 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:52:32,603 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019082120]
[2023-11-29 06:52:32,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:52:32,607 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:52:32,607 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:52:32,611 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:52:32,611 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:52:32,613 INFO  L87              Difference]: Start difference. First operand 13525 states and 22523 transitions. Second operand  has 7 states, 7 states have (on average 1160.4285714285713) internal successors, (8123), 7 states have internal predecessors, (8123), 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 06:52:33,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:52:33,434 INFO  L93              Difference]: Finished difference Result 36794 states and 61269 transitions.
[2023-11-29 06:52:33,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:52:33,436 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1160.4285714285713) internal successors, (8123), 7 states have internal predecessors, (8123), 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 9006
[2023-11-29 06:52:33,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:52:33,457 INFO  L225             Difference]: With dead ends: 36794
[2023-11-29 06:52:33,457 INFO  L226             Difference]: Without dead ends: 25126
[2023-11-29 06:52:33,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9015 GetRequests, 9003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:52:33,464 INFO  L413           NwaCegarLoop]: 22436 mSDtfsCounter, 56294 mSDsluCounter, 87518 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56294 SdHoareTripleChecker+Valid, 109954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:52:33,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56294 Valid, 109954 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:52:33,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25126 states.
[2023-11-29 06:52:33,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25126 to 13527.
[2023-11-29 06:52:33,606 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13527 states, 13526 states have (on average 1.6653112524027798) internal successors, (22525), 13526 states have internal predecessors, (22525), 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 06:52:33,620 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13527 states to 13527 states and 22525 transitions.
[2023-11-29 06:52:33,621 INFO  L78                 Accepts]: Start accepts. Automaton has 13527 states and 22525 transitions. Word has length 9006
[2023-11-29 06:52:33,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:52:33,625 INFO  L495      AbstractCegarLoop]: Abstraction has 13527 states and 22525 transitions.
[2023-11-29 06:52:33,627 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1160.4285714285713) internal successors, (8123), 7 states have internal predecessors, (8123), 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 06:52:33,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 13527 states and 22525 transitions.
[2023-11-29 06:52:33,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9008
[2023-11-29 06:52:33,975 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:52:33,978 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]
[2023-11-29 06:52:34,091 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 06:52:34,178 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:52:34,178 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:52:34,179 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:52:34,181 INFO  L85        PathProgramCache]: Analyzing trace with hash -1083657448, now seen corresponding path program 1 times
[2023-11-29 06:52:34,181 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:52:34,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036013510]
[2023-11-29 06:52:34,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:34,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:52:34,981 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:52:34,982 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318889892]
[2023-11-29 06:52:34,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:34,983 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:52:34,983 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:52:34,984 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:52:34,985 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 06:52:46,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:52:47,098 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45152 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:52:47,194 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:52:47,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked.
[2023-11-29 06:52:47,624 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:52:47,624 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:52:47,624 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036013510]
[2023-11-29 06:52:47,624 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:52:47,624 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318889892]
[2023-11-29 06:52:47,624 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318889892] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:52:47,624 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:52:47,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:52:47,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589640775]
[2023-11-29 06:52:47,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:52:47,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:52:47,631 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:52:47,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:52:47,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:52:47,637 INFO  L87              Difference]: Start difference. First operand 13527 states and 22525 transitions. Second operand  has 7 states, 7 states have (on average 1160.857142857143) internal successors, (8126), 7 states have internal predecessors, (8126), 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 06:52:48,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:52:48,445 INFO  L93              Difference]: Finished difference Result 36800 states and 61275 transitions.
[2023-11-29 06:52:48,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:52:48,447 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1160.857142857143) internal successors, (8126), 7 states have internal predecessors, (8126), 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 9007
[2023-11-29 06:52:48,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:52:48,465 INFO  L225             Difference]: With dead ends: 36800
[2023-11-29 06:52:48,465 INFO  L226             Difference]: Without dead ends: 25127
[2023-11-29 06:52:48,469 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9016 GetRequests, 9004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:52:48,470 INFO  L413           NwaCegarLoop]: 22431 mSDtfsCounter, 56293 mSDsluCounter, 87503 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56293 SdHoareTripleChecker+Valid, 109934 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:52:48,470 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56293 Valid, 109934 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:52:48,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25127 states.
[2023-11-29 06:52:48,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25127 to 13529.
[2023-11-29 06:52:48,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13529 states, 13528 states have (on average 1.6652128917800118) internal successors, (22527), 13528 states have internal predecessors, (22527), 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 06:52:48,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13529 states to 13529 states and 22527 transitions.
[2023-11-29 06:52:48,615 INFO  L78                 Accepts]: Start accepts. Automaton has 13529 states and 22527 transitions. Word has length 9007
[2023-11-29 06:52:48,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:52:48,620 INFO  L495      AbstractCegarLoop]: Abstraction has 13529 states and 22527 transitions.
[2023-11-29 06:52:48,621 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1160.857142857143) internal successors, (8126), 7 states have internal predecessors, (8126), 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 06:52:48,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 13529 states and 22527 transitions.
[2023-11-29 06:52:48,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9009
[2023-11-29 06:52:48,965 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:52:48,967 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]
[2023-11-29 06:52:49,081 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 06:52:49,167 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 06:52:49,168 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:52:49,168 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:52:49,169 INFO  L85        PathProgramCache]: Analyzing trace with hash 353901280, now seen corresponding path program 1 times
[2023-11-29 06:52:49,169 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:52:49,169 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814529237]
[2023-11-29 06:52:49,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:49,170 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:52:49,949 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:52:49,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845146949]
[2023-11-29 06:52:49,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:52:49,951 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:52:49,951 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:52:49,952 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:52:49,953 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 06:53:01,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:01,808 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45155 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:53:01,909 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:02,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked.
[2023-11-29 06:53:02,514 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:02,515 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:02,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814529237]
[2023-11-29 06:53:02,515 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:02,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845146949]
[2023-11-29 06:53:02,515 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845146949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:02,515 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:02,518 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:53:02,518 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311791004]
[2023-11-29 06:53:02,518 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:02,524 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:53:02,524 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:02,530 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:53:02,530 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:53:02,533 INFO  L87              Difference]: Start difference. First operand 13529 states and 22527 transitions. Second operand  has 7 states, 7 states have (on average 1161.2857142857142) internal successors, (8129), 7 states have internal predecessors, (8129), 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 06:53:03,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:03,245 INFO  L93              Difference]: Finished difference Result 36806 states and 61281 transitions.
[2023-11-29 06:53:03,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:53:03,248 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1161.2857142857142) internal successors, (8129), 7 states have internal predecessors, (8129), 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 9008
[2023-11-29 06:53:03,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:03,273 INFO  L225             Difference]: With dead ends: 36806
[2023-11-29 06:53:03,273 INFO  L226             Difference]: Without dead ends: 25128
[2023-11-29 06:53:03,282 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9017 GetRequests, 9005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:53:03,282 INFO  L413           NwaCegarLoop]: 22426 mSDtfsCounter, 56292 mSDsluCounter, 87488 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56292 SdHoareTripleChecker+Valid, 109914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:03,282 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56292 Valid, 109914 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:03,303 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25128 states.
[2023-11-29 06:53:03,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25128 to 13531.
[2023-11-29 06:53:03,432 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13531 states, 13530 states have (on average 1.6651145602365114) internal successors, (22529), 13530 states have internal predecessors, (22529), 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 06:53:03,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22529 transitions.
[2023-11-29 06:53:03,447 INFO  L78                 Accepts]: Start accepts. Automaton has 13531 states and 22529 transitions. Word has length 9008
[2023-11-29 06:53:03,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:03,452 INFO  L495      AbstractCegarLoop]: Abstraction has 13531 states and 22529 transitions.
[2023-11-29 06:53:03,453 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1161.2857142857142) internal successors, (8129), 7 states have internal predecessors, (8129), 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 06:53:03,454 INFO  L276                IsEmpty]: Start isEmpty. Operand 13531 states and 22529 transitions.
[2023-11-29 06:53:03,831 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9010
[2023-11-29 06:53:03,831 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:03,833 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]
[2023-11-29 06:53:03,949 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 06:53:04,033 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 06:53:04,034 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:04,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:04,035 INFO  L85        PathProgramCache]: Analyzing trace with hash -299194446, now seen corresponding path program 1 times
[2023-11-29 06:53:04,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:04,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350853453]
[2023-11-29 06:53:04,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:04,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:04,821 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:04,821 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702101068]
[2023-11-29 06:53:04,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:04,823 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:04,823 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:04,824 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:04,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 06:53:16,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:16,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45158 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:53:16,959 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:17,394 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked.
[2023-11-29 06:53:17,394 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:17,395 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:17,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350853453]
[2023-11-29 06:53:17,395 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:17,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702101068]
[2023-11-29 06:53:17,395 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702101068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:17,395 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:17,397 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:53:17,397 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538479253]
[2023-11-29 06:53:17,397 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:17,401 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:53:17,401 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:17,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:53:17,406 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:53:17,408 INFO  L87              Difference]: Start difference. First operand 13531 states and 22529 transitions. Second operand  has 7 states, 7 states have (on average 1161.7142857142858) internal successors, (8132), 7 states have internal predecessors, (8132), 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 06:53:18,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:18,125 INFO  L93              Difference]: Finished difference Result 36812 states and 61287 transitions.
[2023-11-29 06:53:18,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:53:18,128 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1161.7142857142858) internal successors, (8132), 7 states have internal predecessors, (8132), 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 9009
[2023-11-29 06:53:18,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:18,151 INFO  L225             Difference]: With dead ends: 36812
[2023-11-29 06:53:18,151 INFO  L226             Difference]: Without dead ends: 25129
[2023-11-29 06:53:18,161 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9018 GetRequests, 9006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:53:18,161 INFO  L413           NwaCegarLoop]: 22421 mSDtfsCounter, 56291 mSDsluCounter, 87473 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56291 SdHoareTripleChecker+Valid, 109894 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:18,161 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56291 Valid, 109894 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:18,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25129 states.
[2023-11-29 06:53:18,299 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25129 to 13533.
[2023-11-29 06:53:18,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13533 states, 13532 states have (on average 1.6650162577593852) internal successors, (22531), 13532 states have internal predecessors, (22531), 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 06:53:18,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 22531 transitions.
[2023-11-29 06:53:18,325 INFO  L78                 Accepts]: Start accepts. Automaton has 13533 states and 22531 transitions. Word has length 9009
[2023-11-29 06:53:18,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:18,330 INFO  L495      AbstractCegarLoop]: Abstraction has 13533 states and 22531 transitions.
[2023-11-29 06:53:18,332 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1161.7142857142858) internal successors, (8132), 7 states have internal predecessors, (8132), 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 06:53:18,332 INFO  L276                IsEmpty]: Start isEmpty. Operand 13533 states and 22531 transitions.
[2023-11-29 06:53:18,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9011
[2023-11-29 06:53:18,732 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:18,733 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 06:53:18,847 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 06:53:18,934 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 06:53:18,934 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:18,935 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:18,936 INFO  L85        PathProgramCache]: Analyzing trace with hash -1871389882, now seen corresponding path program 1 times
[2023-11-29 06:53:18,936 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:18,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993390093]
[2023-11-29 06:53:18,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:18,937 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:19,742 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:19,743 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364599157]
[2023-11-29 06:53:19,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:19,744 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:19,744 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:19,745 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:19,746 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 06:53:31,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:31,895 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45161 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:53:31,989 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:32,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2023-11-29 06:53:32,476 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:32,476 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:32,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993390093]
[2023-11-29 06:53:32,476 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:32,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364599157]
[2023-11-29 06:53:32,476 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [364599157] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:32,476 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:32,479 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:53:32,479 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949425702]
[2023-11-29 06:53:32,479 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:32,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:53:32,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:32,491 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:53:32,491 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:53:32,493 INFO  L87              Difference]: Start difference. First operand 13533 states and 22531 transitions. Second operand  has 8 states, 8 states have (on average 1016.875) internal successors, (8135), 8 states have internal predecessors, (8135), 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 06:53:33,456 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:33,456 INFO  L93              Difference]: Finished difference Result 36818 states and 61293 transitions.
[2023-11-29 06:53:33,457 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:53:33,458 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1016.875) internal successors, (8135), 8 states have internal predecessors, (8135), 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 9010
[2023-11-29 06:53:33,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:33,476 INFO  L225             Difference]: With dead ends: 36818
[2023-11-29 06:53:33,477 INFO  L226             Difference]: Without dead ends: 25130
[2023-11-29 06:53:33,482 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9019 GetRequests, 9006 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 06:53:33,482 INFO  L413           NwaCegarLoop]: 22416 mSDtfsCounter, 56290 mSDsluCounter, 109871 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56290 SdHoareTripleChecker+Valid, 132287 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:33,482 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56290 Valid, 132287 Invalid, 59 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:33,500 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25130 states.
[2023-11-29 06:53:33,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25130 to 13535.
[2023-11-29 06:53:33,617 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13535 states, 13534 states have (on average 1.6649179843357471) internal successors, (22533), 13534 states have internal predecessors, (22533), 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 06:53:33,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 22533 transitions.
[2023-11-29 06:53:33,632 INFO  L78                 Accepts]: Start accepts. Automaton has 13535 states and 22533 transitions. Word has length 9010
[2023-11-29 06:53:33,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:33,636 INFO  L495      AbstractCegarLoop]: Abstraction has 13535 states and 22533 transitions.
[2023-11-29 06:53:33,638 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1016.875) internal successors, (8135), 8 states have internal predecessors, (8135), 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 06:53:33,638 INFO  L276                IsEmpty]: Start isEmpty. Operand 13535 states and 22533 transitions.
[2023-11-29 06:53:33,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9012
[2023-11-29 06:53:33,945 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:33,947 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 06:53:34,063 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-11-29 06:53:34,147 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:34,148 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:34,148 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:34,149 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568267058, now seen corresponding path program 1 times
[2023-11-29 06:53:34,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:34,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965017423]
[2023-11-29 06:53:34,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:34,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:34,975 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:34,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053017753]
[2023-11-29 06:53:34,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:34,977 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:34,977 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:34,978 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:34,979 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 06:53:46,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:46,802 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45165 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:53:46,904 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:47,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked.
[2023-11-29 06:53:47,330 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:47,330 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:47,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965017423]
[2023-11-29 06:53:47,330 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:47,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053017753]
[2023-11-29 06:53:47,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053017753] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:47,330 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:47,334 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:53:47,334 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954359402]
[2023-11-29 06:53:47,334 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:47,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:53:47,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:47,343 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:53:47,343 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:53:47,345 INFO  L87              Difference]: Start difference. First operand 13535 states and 22533 transitions. Second operand  has 7 states, 7 states have (on average 1162.5714285714287) internal successors, (8138), 7 states have internal predecessors, (8138), 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 06:53:48,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:48,199 INFO  L93              Difference]: Finished difference Result 36824 states and 61299 transitions.
[2023-11-29 06:53:48,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:53:48,200 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1162.5714285714287) internal successors, (8138), 7 states have internal predecessors, (8138), 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 9011
[2023-11-29 06:53:48,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:48,217 INFO  L225             Difference]: With dead ends: 36824
[2023-11-29 06:53:48,218 INFO  L226             Difference]: Without dead ends: 25131
[2023-11-29 06:53:48,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9020 GetRequests, 9008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:53:48,222 INFO  L413           NwaCegarLoop]: 22411 mSDtfsCounter, 56289 mSDsluCounter, 87443 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56289 SdHoareTripleChecker+Valid, 109854 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:48,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56289 Valid, 109854 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:48,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25131 states.
[2023-11-29 06:53:48,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 13537.
[2023-11-29 06:53:48,355 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13537 states, 13536 states have (on average 1.6648197399527187) internal successors, (22535), 13536 states have internal predecessors, (22535), 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 06:53:48,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13537 states to 13537 states and 22535 transitions.
[2023-11-29 06:53:48,370 INFO  L78                 Accepts]: Start accepts. Automaton has 13537 states and 22535 transitions. Word has length 9011
[2023-11-29 06:53:48,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:48,374 INFO  L495      AbstractCegarLoop]: Abstraction has 13537 states and 22535 transitions.
[2023-11-29 06:53:48,375 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1162.5714285714287) internal successors, (8138), 7 states have internal predecessors, (8138), 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 06:53:48,375 INFO  L276                IsEmpty]: Start isEmpty. Operand 13537 states and 22535 transitions.
[2023-11-29 06:53:48,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9013
[2023-11-29 06:53:48,683 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:48,684 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 06:53:48,803 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-11-29 06:53:48,885 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:48,885 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:48,885 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:48,887 INFO  L85        PathProgramCache]: Analyzing trace with hash -67839954, now seen corresponding path program 1 times
[2023-11-29 06:53:48,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:48,887 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160472332]
[2023-11-29 06:53:48,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:48,889 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:49,821 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:49,821 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120313527]
[2023-11-29 06:53:49,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:49,823 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:49,823 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:49,824 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:49,826 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 06:54:01,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:01,996 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45168 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:54:02,260 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:02,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked.
[2023-11-29 06:54:02,702 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:02,702 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:02,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160472332]
[2023-11-29 06:54:02,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:02,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120313527]
[2023-11-29 06:54:02,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120313527] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:02,703 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:02,706 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:54:02,706 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684736954]
[2023-11-29 06:54:02,706 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:02,710 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:54:02,710 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:02,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:54:02,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:54:02,715 INFO  L87              Difference]: Start difference. First operand 13537 states and 22535 transitions. Second operand  has 7 states, 7 states have (on average 1163.0) internal successors, (8141), 7 states have internal predecessors, (8141), 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 06:54:03,523 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:03,523 INFO  L93              Difference]: Finished difference Result 36830 states and 61305 transitions.
[2023-11-29 06:54:03,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:54:03,525 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1163.0) internal successors, (8141), 7 states have internal predecessors, (8141), 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 9012
[2023-11-29 06:54:03,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:03,548 INFO  L225             Difference]: With dead ends: 36830
[2023-11-29 06:54:03,548 INFO  L226             Difference]: Without dead ends: 25132
[2023-11-29 06:54:03,557 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9021 GetRequests, 9009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:54:03,557 INFO  L413           NwaCegarLoop]: 22406 mSDtfsCounter, 56288 mSDsluCounter, 87428 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56288 SdHoareTripleChecker+Valid, 109834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:03,557 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56288 Valid, 109834 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:54:03,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25132 states.
[2023-11-29 06:54:03,694 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25132 to 13539.
[2023-11-29 06:54:03,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13539 states, 13538 states have (on average 1.6647215245974294) internal successors, (22537), 13538 states have internal predecessors, (22537), 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 06:54:03,721 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 22537 transitions.
[2023-11-29 06:54:03,721 INFO  L78                 Accepts]: Start accepts. Automaton has 13539 states and 22537 transitions. Word has length 9012
[2023-11-29 06:54:03,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:03,726 INFO  L495      AbstractCegarLoop]: Abstraction has 13539 states and 22537 transitions.
[2023-11-29 06:54:03,727 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1163.0) internal successors, (8141), 7 states have internal predecessors, (8141), 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 06:54:03,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 13539 states and 22537 transitions.
[2023-11-29 06:54:04,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9014
[2023-11-29 06:54:04,076 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:04,078 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]
[2023-11-29 06:54:04,194 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 06:54:04,278 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:04,278 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:04,279 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:04,281 INFO  L85        PathProgramCache]: Analyzing trace with hash -1654459032, now seen corresponding path program 1 times
[2023-11-29 06:54:04,281 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:04,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692748987]
[2023-11-29 06:54:04,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:04,283 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:05,057 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:05,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204205423]
[2023-11-29 06:54:05,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:05,058 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:05,059 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:05,059 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:05,061 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 06:54:16,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:16,848 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45171 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:54:16,943 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:17,560 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked.
[2023-11-29 06:54:17,560 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:17,560 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:17,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692748987]
[2023-11-29 06:54:17,560 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:17,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204205423]
[2023-11-29 06:54:17,560 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [204205423] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:17,561 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:17,564 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:54:17,564 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171059151]
[2023-11-29 06:54:17,564 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:17,568 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:54:17,568 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:17,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:54:17,571 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:54:17,573 INFO  L87              Difference]: Start difference. First operand 13539 states and 22537 transitions. Second operand  has 7 states, 7 states have (on average 1163.4285714285713) internal successors, (8144), 7 states have internal predecessors, (8144), 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 06:54:18,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:18,294 INFO  L93              Difference]: Finished difference Result 36836 states and 61311 transitions.
[2023-11-29 06:54:18,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:54:18,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1163.4285714285713) internal successors, (8144), 7 states have internal predecessors, (8144), 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 9013
[2023-11-29 06:54:18,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:18,320 INFO  L225             Difference]: With dead ends: 36836
[2023-11-29 06:54:18,320 INFO  L226             Difference]: Without dead ends: 25133
[2023-11-29 06:54:18,330 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9022 GetRequests, 9010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:54:18,331 INFO  L413           NwaCegarLoop]: 22401 mSDtfsCounter, 56287 mSDsluCounter, 87413 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56287 SdHoareTripleChecker+Valid, 109814 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:18,331 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56287 Valid, 109814 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:54:18,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25133 states.
[2023-11-29 06:54:18,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25133 to 13541.
[2023-11-29 06:54:18,481 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13541 states, 13540 states have (on average 1.6646233382570161) internal successors, (22539), 13540 states have internal predecessors, (22539), 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 06:54:18,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 22539 transitions.
[2023-11-29 06:54:18,497 INFO  L78                 Accepts]: Start accepts. Automaton has 13541 states and 22539 transitions. Word has length 9013
[2023-11-29 06:54:18,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:18,501 INFO  L495      AbstractCegarLoop]: Abstraction has 13541 states and 22539 transitions.
[2023-11-29 06:54:18,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1163.4285714285713) internal successors, (8144), 7 states have internal predecessors, (8144), 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 06:54:18,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 13541 states and 22539 transitions.
[2023-11-29 06:54:18,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9015
[2023-11-29 06:54:18,890 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:18,891 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]
[2023-11-29 06:54:19,008 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 06:54:19,092 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 06:54:19,092 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:19,092 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:19,094 INFO  L85        PathProgramCache]: Analyzing trace with hash 615357588, now seen corresponding path program 1 times
[2023-11-29 06:54:19,094 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:19,095 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219794721]
[2023-11-29 06:54:19,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:19,095 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:19,905 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:19,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749163429]
[2023-11-29 06:54:19,907 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:19,907 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:19,907 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:19,908 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:19,909 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 06:54:31,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:31,935 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45174 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:54:32,027 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:32,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked.
[2023-11-29 06:54:32,451 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:32,451 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:32,451 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219794721]
[2023-11-29 06:54:32,451 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:32,451 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749163429]
[2023-11-29 06:54:32,451 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749163429] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:32,451 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:32,455 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:54:32,455 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666426789]
[2023-11-29 06:54:32,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:32,459 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:54:32,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:32,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:54:32,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:54:32,465 INFO  L87              Difference]: Start difference. First operand 13541 states and 22539 transitions. Second operand  has 7 states, 7 states have (on average 1163.857142857143) internal successors, (8147), 7 states have internal predecessors, (8147), 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 06:54:33,163 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:33,163 INFO  L93              Difference]: Finished difference Result 36842 states and 61317 transitions.
[2023-11-29 06:54:33,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:54:33,166 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1163.857142857143) internal successors, (8147), 7 states have internal predecessors, (8147), 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 9014
[2023-11-29 06:54:33,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:33,189 INFO  L225             Difference]: With dead ends: 36842
[2023-11-29 06:54:33,189 INFO  L226             Difference]: Without dead ends: 25134
[2023-11-29 06:54:33,198 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9023 GetRequests, 9011 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:54:33,198 INFO  L413           NwaCegarLoop]: 22396 mSDtfsCounter, 56286 mSDsluCounter, 87398 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56286 SdHoareTripleChecker+Valid, 109794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:33,199 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56286 Valid, 109794 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:54:33,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25134 states.
[2023-11-29 06:54:33,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25134 to 13543.
[2023-11-29 06:54:33,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13543 states, 13542 states have (on average 1.6645251809186234) internal successors, (22541), 13542 states have internal predecessors, (22541), 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 06:54:33,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13543 states to 13543 states and 22541 transitions.
[2023-11-29 06:54:33,364 INFO  L78                 Accepts]: Start accepts. Automaton has 13543 states and 22541 transitions. Word has length 9014
[2023-11-29 06:54:33,369 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:33,369 INFO  L495      AbstractCegarLoop]: Abstraction has 13543 states and 22541 transitions.
[2023-11-29 06:54:33,371 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1163.857142857143) internal successors, (8147), 7 states have internal predecessors, (8147), 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 06:54:33,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 13543 states and 22541 transitions.
[2023-11-29 06:54:33,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9016
[2023-11-29 06:54:33,767 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:33,768 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]
[2023-11-29 06:54:33,883 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 06:54:33,969 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 06:54:33,969 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:33,969 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:33,970 INFO  L85        PathProgramCache]: Analyzing trace with hash 1885723524, now seen corresponding path program 1 times
[2023-11-29 06:54:33,971 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:33,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533375585]
[2023-11-29 06:54:33,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:33,971 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:34,820 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:34,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11319488]
[2023-11-29 06:54:34,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:34,822 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:34,822 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:34,822 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:34,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 06:54:46,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:46,773 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45178 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:54:46,904 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:47,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked.
[2023-11-29 06:54:47,349 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:47,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:47,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533375585]
[2023-11-29 06:54:47,349 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:47,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11319488]
[2023-11-29 06:54:47,349 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [11319488] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:47,349 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:47,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:54:47,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622246486]
[2023-11-29 06:54:47,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:47,357 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:54:47,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:47,362 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:54:47,362 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:54:47,364 INFO  L87              Difference]: Start difference. First operand 13543 states and 22541 transitions. Second operand  has 7 states, 7 states have (on average 1164.2857142857142) internal successors, (8150), 7 states have internal predecessors, (8150), 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 06:54:48,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:48,087 INFO  L93              Difference]: Finished difference Result 36848 states and 61323 transitions.
[2023-11-29 06:54:48,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:54:48,090 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1164.2857142857142) internal successors, (8150), 7 states have internal predecessors, (8150), 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 9015
[2023-11-29 06:54:48,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:48,114 INFO  L225             Difference]: With dead ends: 36848
[2023-11-29 06:54:48,114 INFO  L226             Difference]: Without dead ends: 25135
[2023-11-29 06:54:48,123 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9024 GetRequests, 9012 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:54:48,124 INFO  L413           NwaCegarLoop]: 22391 mSDtfsCounter, 56285 mSDsluCounter, 87383 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56285 SdHoareTripleChecker+Valid, 109774 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:48,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56285 Valid, 109774 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:54:48,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25135 states.
[2023-11-29 06:54:48,263 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 13545.
[2023-11-29 06:54:48,274 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13545 states, 13544 states have (on average 1.6644270525694034) internal successors, (22543), 13544 states have internal predecessors, (22543), 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 06:54:48,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13545 states to 13545 states and 22543 transitions.
[2023-11-29 06:54:48,289 INFO  L78                 Accepts]: Start accepts. Automaton has 13545 states and 22543 transitions. Word has length 9015
[2023-11-29 06:54:48,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:48,294 INFO  L495      AbstractCegarLoop]: Abstraction has 13545 states and 22543 transitions.
[2023-11-29 06:54:48,297 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1164.2857142857142) internal successors, (8150), 7 states have internal predecessors, (8150), 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 06:54:48,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 13545 states and 22543 transitions.
[2023-11-29 06:54:48,735 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9017
[2023-11-29 06:54:48,735 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:48,736 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 06:54:48,858 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 06:54:48,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 06:54:48,937 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:48,937 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:48,938 INFO  L85        PathProgramCache]: Analyzing trace with hash -2131645828, now seen corresponding path program 1 times
[2023-11-29 06:54:48,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:48,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221243816]
[2023-11-29 06:54:48,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:48,941 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:49,722 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:49,722 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951977702]
[2023-11-29 06:54:49,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:49,724 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:49,724 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:49,725 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:49,726 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 06:55:01,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:01,501 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45181 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:55:01,598 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:02,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked.
[2023-11-29 06:55:02,222 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:55:02,222 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:02,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221243816]
[2023-11-29 06:55:02,223 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:02,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951977702]
[2023-11-29 06:55:02,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [951977702] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:55:02,223 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:55:02,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:55:02,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319302034]
[2023-11-29 06:55:02,225 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:02,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:55:02,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:02,232 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:55:02,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:55:02,234 INFO  L87              Difference]: Start difference. First operand 13545 states and 22543 transitions. Second operand  has 7 states, 7 states have (on average 1164.7142857142858) internal successors, (8153), 7 states have internal predecessors, (8153), 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 06:55:03,010 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:03,011 INFO  L93              Difference]: Finished difference Result 36854 states and 61329 transitions.
[2023-11-29 06:55:03,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:55:03,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1164.7142857142858) internal successors, (8153), 7 states have internal predecessors, (8153), 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 9016
[2023-11-29 06:55:03,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:03,037 INFO  L225             Difference]: With dead ends: 36854
[2023-11-29 06:55:03,037 INFO  L226             Difference]: Without dead ends: 25136
[2023-11-29 06:55:03,046 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9025 GetRequests, 9013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:55:03,046 INFO  L413           NwaCegarLoop]: 22386 mSDtfsCounter, 56284 mSDsluCounter, 87368 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56284 SdHoareTripleChecker+Valid, 109754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:03,047 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56284 Valid, 109754 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:55:03,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25136 states.
[2023-11-29 06:55:03,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25136 to 13547.
[2023-11-29 06:55:03,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13547 states, 13546 states have (on average 1.6643289531965155) internal successors, (22545), 13546 states have internal predecessors, (22545), 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 06:55:03,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13547 states to 13547 states and 22545 transitions.
[2023-11-29 06:55:03,235 INFO  L78                 Accepts]: Start accepts. Automaton has 13547 states and 22545 transitions. Word has length 9016
[2023-11-29 06:55:03,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:03,240 INFO  L495      AbstractCegarLoop]: Abstraction has 13547 states and 22545 transitions.
[2023-11-29 06:55:03,242 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1164.7142857142858) internal successors, (8153), 7 states have internal predecessors, (8153), 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 06:55:03,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 13547 states and 22545 transitions.
[2023-11-29 06:55:03,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9018
[2023-11-29 06:55:03,662 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:03,663 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]
[2023-11-29 06:55:03,779 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 06:55:03,864 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 06:55:03,864 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:03,864 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:03,865 INFO  L85        PathProgramCache]: Analyzing trace with hash -1623062498, now seen corresponding path program 1 times
[2023-11-29 06:55:03,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:03,866 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258577022]
[2023-11-29 06:55:03,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:03,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:04,646 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:04,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825710471]
[2023-11-29 06:55:04,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:04,648 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:04,648 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:04,648 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:04,649 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 06:55:16,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:16,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45184 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:55:16,640 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:17,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked.
[2023-11-29 06:55:17,249 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:55:17,249 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:17,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258577022]
[2023-11-29 06:55:17,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:17,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825710471]
[2023-11-29 06:55:17,249 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [825710471] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:55:17,249 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:55:17,252 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:55:17,252 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924215516]
[2023-11-29 06:55:17,252 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:17,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:55:17,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:17,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:55:17,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:55:17,261 INFO  L87              Difference]: Start difference. First operand 13547 states and 22545 transitions. Second operand  has 7 states, 7 states have (on average 1165.142857142857) internal successors, (8156), 7 states have internal predecessors, (8156), 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 06:55:17,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:17,975 INFO  L93              Difference]: Finished difference Result 36860 states and 61335 transitions.
[2023-11-29 06:55:17,975 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:55:17,977 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1165.142857142857) internal successors, (8156), 7 states have internal predecessors, (8156), 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 9017
[2023-11-29 06:55:17,983 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:18,001 INFO  L225             Difference]: With dead ends: 36860
[2023-11-29 06:55:18,001 INFO  L226             Difference]: Without dead ends: 25137
[2023-11-29 06:55:18,010 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9026 GetRequests, 9014 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:55:18,010 INFO  L413           NwaCegarLoop]: 22381 mSDtfsCounter, 56283 mSDsluCounter, 87353 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56283 SdHoareTripleChecker+Valid, 109734 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:18,011 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56283 Valid, 109734 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:55:18,034 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25137 states.
[2023-11-29 06:55:18,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25137 to 13549.
[2023-11-29 06:55:18,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13549 states, 13548 states have (on average 1.6642308827871273) internal successors, (22547), 13548 states have internal predecessors, (22547), 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 06:55:18,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 22547 transitions.
[2023-11-29 06:55:18,178 INFO  L78                 Accepts]: Start accepts. Automaton has 13549 states and 22547 transitions. Word has length 9017
[2023-11-29 06:55:18,183 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:18,183 INFO  L495      AbstractCegarLoop]: Abstraction has 13549 states and 22547 transitions.
[2023-11-29 06:55:18,185 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1165.142857142857) internal successors, (8156), 7 states have internal predecessors, (8156), 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 06:55:18,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 13549 states and 22547 transitions.
[2023-11-29 06:55:18,570 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9019
[2023-11-29 06:55:18,570 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:18,571 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 06:55:18,686 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 06:55:18,772 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 06:55:18,772 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:18,772 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:18,773 INFO  L85        PathProgramCache]: Analyzing trace with hash -1113459998, now seen corresponding path program 1 times
[2023-11-29 06:55:18,774 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:18,774 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274341835]
[2023-11-29 06:55:18,774 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:18,775 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:19,551 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:19,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212643868]
[2023-11-29 06:55:19,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:19,552 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:19,552 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:19,553 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:19,554 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 06:55:31,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:31,530 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45187 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:55:31,623 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:32,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked.
[2023-11-29 06:55:32,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:55:32,095 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:32,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274341835]
[2023-11-29 06:55:32,095 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:32,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212643868]
[2023-11-29 06:55:32,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212643868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:55:32,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:55:32,099 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:55:32,099 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859464172]
[2023-11-29 06:55:32,099 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:32,104 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:55:32,104 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:32,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:55:32,109 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:55:32,110 INFO  L87              Difference]: Start difference. First operand 13549 states and 22547 transitions. Second operand  has 8 states, 8 states have (on average 1019.875) internal successors, (8159), 8 states have internal predecessors, (8159), 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 06:55:33,084 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:33,084 INFO  L93              Difference]: Finished difference Result 36866 states and 61341 transitions.
[2023-11-29 06:55:33,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:55:33,086 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1019.875) internal successors, (8159), 8 states have internal predecessors, (8159), 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 9018
[2023-11-29 06:55:33,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:33,108 INFO  L225             Difference]: With dead ends: 36866
[2023-11-29 06:55:33,108 INFO  L226             Difference]: Without dead ends: 25138
[2023-11-29 06:55:33,115 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9027 GetRequests, 9014 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 06:55:33,116 INFO  L413           NwaCegarLoop]: 22376 mSDtfsCounter, 56282 mSDsluCounter, 109711 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56282 SdHoareTripleChecker+Valid, 132087 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:33,116 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56282 Valid, 132087 Invalid, 59 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:55:33,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25138 states.
[2023-11-29 06:55:33,246 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25138 to 13551.
[2023-11-29 06:55:33,257 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13551 states, 13550 states have (on average 1.6641328413284133) internal successors, (22549), 13550 states have internal predecessors, (22549), 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 06:55:33,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13551 states to 13551 states and 22549 transitions.
[2023-11-29 06:55:33,272 INFO  L78                 Accepts]: Start accepts. Automaton has 13551 states and 22549 transitions. Word has length 9018
[2023-11-29 06:55:33,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:33,276 INFO  L495      AbstractCegarLoop]: Abstraction has 13551 states and 22549 transitions.
[2023-11-29 06:55:33,278 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1019.875) internal successors, (8159), 8 states have internal predecessors, (8159), 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 06:55:33,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 13551 states and 22549 transitions.
[2023-11-29 06:55:33,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9020
[2023-11-29 06:55:33,586 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:33,587 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]
[2023-11-29 06:55:33,704 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 06:55:33,788 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 06:55:33,788 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:33,788 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:33,789 INFO  L85        PathProgramCache]: Analyzing trace with hash -1748674758, now seen corresponding path program 1 times
[2023-11-29 06:55:33,789 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:33,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783074000]
[2023-11-29 06:55:33,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:33,790 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:34,608 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:34,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40456570]
[2023-11-29 06:55:34,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:34,610 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:34,610 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:34,611 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:34,612 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 06:55:46,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:46,497 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45191 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:55:46,589 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:47,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked.
[2023-11-29 06:55:47,023 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:55:47,023 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:47,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783074000]
[2023-11-29 06:55:47,024 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:47,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40456570]
[2023-11-29 06:55:47,024 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [40456570] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:55:47,024 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:55:47,027 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:55:47,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860268713]
[2023-11-29 06:55:47,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:47,031 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:55:47,031 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:47,034 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:55:47,034 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:55:47,036 INFO  L87              Difference]: Start difference. First operand 13551 states and 22549 transitions. Second operand  has 7 states, 7 states have (on average 1166.0) internal successors, (8162), 7 states have internal predecessors, (8162), 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 06:55:47,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:47,741 INFO  L93              Difference]: Finished difference Result 36872 states and 61347 transitions.
[2023-11-29 06:55:47,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:55:47,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1166.0) internal successors, (8162), 7 states have internal predecessors, (8162), 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 9019
[2023-11-29 06:55:47,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:47,767 INFO  L225             Difference]: With dead ends: 36872
[2023-11-29 06:55:47,767 INFO  L226             Difference]: Without dead ends: 25139
[2023-11-29 06:55:47,776 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9028 GetRequests, 9016 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:55:47,776 INFO  L413           NwaCegarLoop]: 22371 mSDtfsCounter, 56281 mSDsluCounter, 87323 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56281 SdHoareTripleChecker+Valid, 109694 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:47,776 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56281 Valid, 109694 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:55:47,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25139 states.
[2023-11-29 06:55:47,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25139 to 13553.
[2023-11-29 06:55:47,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13553 states, 13552 states have (on average 1.6640348288075562) internal successors, (22551), 13552 states have internal predecessors, (22551), 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 06:55:47,942 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 22551 transitions.
[2023-11-29 06:55:47,942 INFO  L78                 Accepts]: Start accepts. Automaton has 13553 states and 22551 transitions. Word has length 9019
[2023-11-29 06:55:47,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:47,947 INFO  L495      AbstractCegarLoop]: Abstraction has 13553 states and 22551 transitions.
[2023-11-29 06:55:47,948 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1166.0) internal successors, (8162), 7 states have internal predecessors, (8162), 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 06:55:47,948 INFO  L276                IsEmpty]: Start isEmpty. Operand 13553 states and 22551 transitions.
[2023-11-29 06:55:48,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9021
[2023-11-29 06:55:48,368 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:48,369 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]
[2023-11-29 06:55:48,484 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 06:55:48,570 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 06:55:48,570 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:48,570 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:48,571 INFO  L85        PathProgramCache]: Analyzing trace with hash 574230986, now seen corresponding path program 1 times
[2023-11-29 06:55:48,571 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:48,572 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727233520]
[2023-11-29 06:55:48,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:48,572 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:49,354 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:49,354 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877883292]
[2023-11-29 06:55:49,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:49,356 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:49,356 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:49,357 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:49,358 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 06:56:00,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:01,235 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45194 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:56:01,332 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:01,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked.
[2023-11-29 06:56:01,754 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:56:01,755 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:01,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727233520]
[2023-11-29 06:56:01,755 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:01,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877883292]
[2023-11-29 06:56:01,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877883292] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:56:01,755 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:56:01,757 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:56:01,757 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859340112]
[2023-11-29 06:56:01,757 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:01,761 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:56:01,761 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:01,765 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:56:01,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:56:01,767 INFO  L87              Difference]: Start difference. First operand 13553 states and 22551 transitions. Second operand  has 7 states, 7 states have (on average 1166.4285714285713) internal successors, (8165), 7 states have internal predecessors, (8165), 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 06:56:02,588 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:02,588 INFO  L93              Difference]: Finished difference Result 36878 states and 61353 transitions.
[2023-11-29 06:56:02,588 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:56:02,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1166.4285714285713) internal successors, (8165), 7 states have internal predecessors, (8165), 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 9020
[2023-11-29 06:56:02,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:02,614 INFO  L225             Difference]: With dead ends: 36878
[2023-11-29 06:56:02,614 INFO  L226             Difference]: Without dead ends: 25140
[2023-11-29 06:56:02,623 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9029 GetRequests, 9017 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:56:02,623 INFO  L413           NwaCegarLoop]: 22366 mSDtfsCounter, 56280 mSDsluCounter, 87308 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56280 SdHoareTripleChecker+Valid, 109674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:02,624 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56280 Valid, 109674 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:56:02,645 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25140 states.
[2023-11-29 06:56:02,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25140 to 13555.
[2023-11-29 06:56:02,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13555 states, 13554 states have (on average 1.6639368452117456) internal successors, (22553), 13554 states have internal predecessors, (22553), 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 06:56:02,789 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 22553 transitions.
[2023-11-29 06:56:02,789 INFO  L78                 Accepts]: Start accepts. Automaton has 13555 states and 22553 transitions. Word has length 9020
[2023-11-29 06:56:02,794 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:02,794 INFO  L495      AbstractCegarLoop]: Abstraction has 13555 states and 22553 transitions.
[2023-11-29 06:56:02,795 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1166.4285714285713) internal successors, (8165), 7 states have internal predecessors, (8165), 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 06:56:02,796 INFO  L276                IsEmpty]: Start isEmpty. Operand 13555 states and 22553 transitions.
[2023-11-29 06:56:03,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9022
[2023-11-29 06:56:03,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:03,106 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]
[2023-11-29 06:56:03,222 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 06:56:03,306 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 06:56:03,306 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:03,307 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:03,308 INFO  L85        PathProgramCache]: Analyzing trace with hash -461021228, now seen corresponding path program 1 times
[2023-11-29 06:56:03,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:03,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825047808]
[2023-11-29 06:56:03,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:03,309 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:04,119 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:04,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043905599]
[2023-11-29 06:56:04,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:04,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:04,121 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:04,122 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:04,123 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 06:56:15,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:16,079 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45197 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:56:16,176 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:16,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked.
[2023-11-29 06:56:16,825 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:56:16,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:16,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825047808]
[2023-11-29 06:56:16,826 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:16,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043905599]
[2023-11-29 06:56:16,826 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043905599] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:56:16,826 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:56:16,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:56:16,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241138108]
[2023-11-29 06:56:16,830 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:16,833 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:56:16,833 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:16,838 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:56:16,838 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:56:16,840 INFO  L87              Difference]: Start difference. First operand 13555 states and 22553 transitions. Second operand  has 7 states, 7 states have (on average 1166.857142857143) internal successors, (8168), 7 states have internal predecessors, (8168), 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 06:56:17,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:17,544 INFO  L93              Difference]: Finished difference Result 36884 states and 61359 transitions.
[2023-11-29 06:56:17,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:56:17,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1166.857142857143) internal successors, (8168), 7 states have internal predecessors, (8168), 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 9021
[2023-11-29 06:56:17,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:17,570 INFO  L225             Difference]: With dead ends: 36884
[2023-11-29 06:56:17,570 INFO  L226             Difference]: Without dead ends: 25141
[2023-11-29 06:56:17,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9030 GetRequests, 9018 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:56:17,579 INFO  L413           NwaCegarLoop]: 22361 mSDtfsCounter, 56279 mSDsluCounter, 87293 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56279 SdHoareTripleChecker+Valid, 109654 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:17,579 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56279 Valid, 109654 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:56:17,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25141 states.
[2023-11-29 06:56:17,719 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25141 to 13557.
[2023-11-29 06:56:17,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13557 states, 13556 states have (on average 1.6638388905281793) internal successors, (22555), 13556 states have internal predecessors, (22555), 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 06:56:17,745 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13557 states to 13557 states and 22555 transitions.
[2023-11-29 06:56:17,746 INFO  L78                 Accepts]: Start accepts. Automaton has 13557 states and 22555 transitions. Word has length 9021
[2023-11-29 06:56:17,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:17,750 INFO  L495      AbstractCegarLoop]: Abstraction has 13557 states and 22555 transitions.
[2023-11-29 06:56:17,752 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1166.857142857143) internal successors, (8168), 7 states have internal predecessors, (8168), 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 06:56:17,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 13557 states and 22555 transitions.
[2023-11-29 06:56:18,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9023
[2023-11-29 06:56:18,061 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:18,062 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 06:56:18,177 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-11-29 06:56:18,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:18,263 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:18,263 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:18,264 INFO  L85        PathProgramCache]: Analyzing trace with hash 796745264, now seen corresponding path program 1 times
[2023-11-29 06:56:18,264 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:18,264 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612904578]
[2023-11-29 06:56:18,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:18,265 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:19,149 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:19,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252306186]
[2023-11-29 06:56:19,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:19,150 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:19,151 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:19,151 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:19,152 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 06:56:30,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:30,960 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45200 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:56:31,063 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:31,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked.
[2023-11-29 06:56:31,699 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:56:31,699 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:31,699 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612904578]
[2023-11-29 06:56:31,699 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:31,699 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252306186]
[2023-11-29 06:56:31,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252306186] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:56:31,699 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:56:31,702 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:56:31,702 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35558020]
[2023-11-29 06:56:31,703 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:31,706 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:56:31,706 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:31,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:56:31,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:56:31,712 INFO  L87              Difference]: Start difference. First operand 13557 states and 22555 transitions. Second operand  has 7 states, 7 states have (on average 1167.2857142857142) internal successors, (8171), 7 states have internal predecessors, (8171), 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 06:56:32,420 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:32,420 INFO  L93              Difference]: Finished difference Result 36890 states and 61365 transitions.
[2023-11-29 06:56:32,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:56:32,422 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1167.2857142857142) internal successors, (8171), 7 states have internal predecessors, (8171), 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 9022
[2023-11-29 06:56:32,428 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:32,445 INFO  L225             Difference]: With dead ends: 36890
[2023-11-29 06:56:32,445 INFO  L226             Difference]: Without dead ends: 25142
[2023-11-29 06:56:32,454 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9031 GetRequests, 9019 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:56:32,455 INFO  L413           NwaCegarLoop]: 22356 mSDtfsCounter, 56278 mSDsluCounter, 87278 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56278 SdHoareTripleChecker+Valid, 109634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:32,455 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56278 Valid, 109634 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:56:32,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25142 states.
[2023-11-29 06:56:32,594 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25142 to 13559.
[2023-11-29 06:56:32,606 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13559 states, 13558 states have (on average 1.6637409647440626) internal successors, (22557), 13558 states have internal predecessors, (22557), 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 06:56:32,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 22557 transitions.
[2023-11-29 06:56:32,621 INFO  L78                 Accepts]: Start accepts. Automaton has 13559 states and 22557 transitions. Word has length 9022
[2023-11-29 06:56:32,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:32,626 INFO  L495      AbstractCegarLoop]: Abstraction has 13559 states and 22557 transitions.
[2023-11-29 06:56:32,627 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1167.2857142857142) internal successors, (8171), 7 states have internal predecessors, (8171), 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 06:56:32,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 13559 states and 22557 transitions.
[2023-11-29 06:56:33,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9024
[2023-11-29 06:56:33,049 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:33,050 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]
[2023-11-29 06:56:33,165 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 06:56:33,251 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2023-11-29 06:56:33,251 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:33,251 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:33,252 INFO  L85        PathProgramCache]: Analyzing trace with hash 279058416, now seen corresponding path program 1 times
[2023-11-29 06:56:33,252 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:33,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934678424]
[2023-11-29 06:56:33,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:33,253 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:34,029 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:34,029 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102023108]
[2023-11-29 06:56:34,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:34,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:34,031 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:34,032 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:34,032 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 06:56:45,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:45,889 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45204 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:56:45,987 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:46,619 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked.
[2023-11-29 06:56:46,619 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:56:46,619 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:46,619 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934678424]
[2023-11-29 06:56:46,619 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:46,619 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102023108]
[2023-11-29 06:56:46,619 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102023108] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:56:46,619 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:56:46,622 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:56:46,622 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221965612]
[2023-11-29 06:56:46,622 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:46,625 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:56:46,625 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:46,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:56:46,629 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:56:46,631 INFO  L87              Difference]: Start difference. First operand 13559 states and 22557 transitions. Second operand  has 7 states, 7 states have (on average 1167.7142857142858) internal successors, (8174), 7 states have internal predecessors, (8174), 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 06:56:47,325 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:47,325 INFO  L93              Difference]: Finished difference Result 36896 states and 61371 transitions.
[2023-11-29 06:56:47,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:56:47,327 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1167.7142857142858) internal successors, (8174), 7 states have internal predecessors, (8174), 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 9023
[2023-11-29 06:56:47,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:47,350 INFO  L225             Difference]: With dead ends: 36896
[2023-11-29 06:56:47,350 INFO  L226             Difference]: Without dead ends: 25143
[2023-11-29 06:56:47,359 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9032 GetRequests, 9020 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:56:47,360 INFO  L413           NwaCegarLoop]: 22351 mSDtfsCounter, 56277 mSDsluCounter, 87263 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56277 SdHoareTripleChecker+Valid, 109614 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:47,360 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56277 Valid, 109614 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:56:47,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25143 states.
[2023-11-29 06:56:47,500 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25143 to 13561.
[2023-11-29 06:56:47,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13561 states, 13560 states have (on average 1.6636430678466076) internal successors, (22559), 13560 states have internal predecessors, (22559), 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 06:56:47,527 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13561 states to 13561 states and 22559 transitions.
[2023-11-29 06:56:47,527 INFO  L78                 Accepts]: Start accepts. Automaton has 13561 states and 22559 transitions. Word has length 9023
[2023-11-29 06:56:47,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:47,532 INFO  L495      AbstractCegarLoop]: Abstraction has 13561 states and 22559 transitions.
[2023-11-29 06:56:47,533 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1167.7142857142858) internal successors, (8174), 7 states have internal predecessors, (8174), 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 06:56:47,534 INFO  L276                IsEmpty]: Start isEmpty. Operand 13561 states and 22559 transitions.
[2023-11-29 06:56:47,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9025
[2023-11-29 06:56:47,955 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:47,956 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]
[2023-11-29 06:56:48,071 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 06:56:48,157 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2023-11-29 06:56:48,157 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:48,157 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:48,158 INFO  L85        PathProgramCache]: Analyzing trace with hash -281440744, now seen corresponding path program 1 times
[2023-11-29 06:56:48,158 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:48,158 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451689674]
[2023-11-29 06:56:48,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:48,159 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:48,935 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:48,935 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969481457]
[2023-11-29 06:56:48,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:48,937 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:48,937 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:48,938 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:48,938 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 06:57:00,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:00,602 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45207 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:57:00,699 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:01,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked.
[2023-11-29 06:57:01,317 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:57:01,317 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:01,317 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451689674]
[2023-11-29 06:57:01,317 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:01,317 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969481457]
[2023-11-29 06:57:01,317 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [969481457] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:57:01,317 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:57:01,319 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:57:01,320 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402652840]
[2023-11-29 06:57:01,320 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:01,323 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:57:01,323 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:01,327 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:57:01,327 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:57:01,328 INFO  L87              Difference]: Start difference. First operand 13561 states and 22559 transitions. Second operand  has 7 states, 7 states have (on average 1168.142857142857) internal successors, (8177), 7 states have internal predecessors, (8177), 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 06:57:02,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:02,036 INFO  L93              Difference]: Finished difference Result 36902 states and 61377 transitions.
[2023-11-29 06:57:02,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:57:02,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1168.142857142857) internal successors, (8177), 7 states have internal predecessors, (8177), 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 9024
[2023-11-29 06:57:02,044 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:02,062 INFO  L225             Difference]: With dead ends: 36902
[2023-11-29 06:57:02,062 INFO  L226             Difference]: Without dead ends: 25144
[2023-11-29 06:57:02,071 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9033 GetRequests, 9021 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:57:02,071 INFO  L413           NwaCegarLoop]: 22346 mSDtfsCounter, 56276 mSDsluCounter, 87248 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56276 SdHoareTripleChecker+Valid, 109594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:02,071 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56276 Valid, 109594 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:57:02,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25144 states.
[2023-11-29 06:57:02,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25144 to 13563.
[2023-11-29 06:57:02,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13563 states, 13562 states have (on average 1.663545199823035) internal successors, (22561), 13562 states have internal predecessors, (22561), 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 06:57:02,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 22561 transitions.
[2023-11-29 06:57:02,238 INFO  L78                 Accepts]: Start accepts. Automaton has 13563 states and 22561 transitions. Word has length 9024
[2023-11-29 06:57:02,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:02,242 INFO  L495      AbstractCegarLoop]: Abstraction has 13563 states and 22561 transitions.
[2023-11-29 06:57:02,244 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1168.142857142857) internal successors, (8177), 7 states have internal predecessors, (8177), 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 06:57:02,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 13563 states and 22561 transitions.
[2023-11-29 06:57:02,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9026
[2023-11-29 06:57:02,667 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:02,668 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 06:57:02,783 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-11-29 06:57:02,868 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:02,869 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:02,869 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:02,870 INFO  L85        PathProgramCache]: Analyzing trace with hash -2027258742, now seen corresponding path program 1 times
[2023-11-29 06:57:02,870 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:02,870 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756448756]
[2023-11-29 06:57:02,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:02,871 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:03,649 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:03,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011448802]
[2023-11-29 06:57:03,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:03,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:03,651 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:03,651 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:03,652 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 06:57:14,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:15,256 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45210 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:57:15,353 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:15,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked.
[2023-11-29 06:57:15,976 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:57:15,976 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:15,976 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756448756]
[2023-11-29 06:57:15,976 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:15,976 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011448802]
[2023-11-29 06:57:15,976 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011448802] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:57:15,977 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:57:15,980 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:57:15,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711457777]
[2023-11-29 06:57:15,980 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:15,984 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:57:15,984 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:15,987 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:57:15,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:57:15,989 INFO  L87              Difference]: Start difference. First operand 13563 states and 22561 transitions. Second operand  has 7 states, 7 states have (on average 1168.5714285714287) internal successors, (8180), 7 states have internal predecessors, (8180), 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 06:57:16,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:16,689 INFO  L93              Difference]: Finished difference Result 36908 states and 61383 transitions.
[2023-11-29 06:57:16,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:57:16,691 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1168.5714285714287) internal successors, (8180), 7 states have internal predecessors, (8180), 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 9025
[2023-11-29 06:57:16,696 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:16,714 INFO  L225             Difference]: With dead ends: 36908
[2023-11-29 06:57:16,714 INFO  L226             Difference]: Without dead ends: 25145
[2023-11-29 06:57:16,723 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9034 GetRequests, 9022 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:57:16,724 INFO  L413           NwaCegarLoop]: 22341 mSDtfsCounter, 56275 mSDsluCounter, 87233 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56275 SdHoareTripleChecker+Valid, 109574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:16,724 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56275 Valid, 109574 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:57:16,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25145 states.
[2023-11-29 06:57:16,863 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25145 to 13565.
[2023-11-29 06:57:16,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13565 states, 13564 states have (on average 1.6634473606605722) internal successors, (22563), 13564 states have internal predecessors, (22563), 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 06:57:16,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13565 states to 13565 states and 22563 transitions.
[2023-11-29 06:57:16,889 INFO  L78                 Accepts]: Start accepts. Automaton has 13565 states and 22563 transitions. Word has length 9025
[2023-11-29 06:57:16,893 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:16,893 INFO  L495      AbstractCegarLoop]: Abstraction has 13565 states and 22563 transitions.
[2023-11-29 06:57:16,895 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1168.5714285714287) internal successors, (8180), 7 states have internal predecessors, (8180), 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 06:57:16,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 13565 states and 22563 transitions.
[2023-11-29 06:57:17,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9027
[2023-11-29 06:57:17,316 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:17,318 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 06:57:17,433 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 06:57:17,518 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:17,519 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:17,519 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:17,520 INFO  L85        PathProgramCache]: Analyzing trace with hash 1068195454, now seen corresponding path program 1 times
[2023-11-29 06:57:17,520 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:17,520 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025580179]
[2023-11-29 06:57:17,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:17,522 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:18,296 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:18,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901276379]
[2023-11-29 06:57:18,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:18,298 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:18,298 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:18,299 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:18,300 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 06:57:29,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:29,787 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45213 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:57:29,884 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:30,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked.
[2023-11-29 06:57:30,523 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:57:30,523 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:30,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025580179]
[2023-11-29 06:57:30,524 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:30,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901276379]
[2023-11-29 06:57:30,524 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [901276379] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:57:30,524 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:57:30,527 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:57:30,527 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887840671]
[2023-11-29 06:57:30,527 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:30,531 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:57:30,531 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:30,534 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:57:30,534 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:57:30,536 INFO  L87              Difference]: Start difference. First operand 13565 states and 22563 transitions. Second operand  has 7 states, 7 states have (on average 1169.0) internal successors, (8183), 7 states have internal predecessors, (8183), 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 06:57:31,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:31,248 INFO  L93              Difference]: Finished difference Result 36914 states and 61389 transitions.
[2023-11-29 06:57:31,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:57:31,250 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1169.0) internal successors, (8183), 7 states have internal predecessors, (8183), 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 9026
[2023-11-29 06:57:31,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:31,274 INFO  L225             Difference]: With dead ends: 36914
[2023-11-29 06:57:31,274 INFO  L226             Difference]: Without dead ends: 25146
[2023-11-29 06:57:31,284 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9035 GetRequests, 9023 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:57:31,284 INFO  L413           NwaCegarLoop]: 22336 mSDtfsCounter, 56274 mSDsluCounter, 87218 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56274 SdHoareTripleChecker+Valid, 109554 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:31,284 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56274 Valid, 109554 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:57:31,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25146 states.
[2023-11-29 06:57:31,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25146 to 13567.
[2023-11-29 06:57:31,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13567 states, 13566 states have (on average 1.6633495503464544) internal successors, (22565), 13566 states have internal predecessors, (22565), 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 06:57:31,452 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 22565 transitions.
[2023-11-29 06:57:31,452 INFO  L78                 Accepts]: Start accepts. Automaton has 13567 states and 22565 transitions. Word has length 9026
[2023-11-29 06:57:31,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:31,457 INFO  L495      AbstractCegarLoop]: Abstraction has 13567 states and 22565 transitions.
[2023-11-29 06:57:31,459 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1169.0) internal successors, (8183), 7 states have internal predecessors, (8183), 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 06:57:31,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 13567 states and 22565 transitions.
[2023-11-29 06:57:31,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9028
[2023-11-29 06:57:31,883 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:31,884 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 06:57:32,000 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 06:57:32,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 06:57:32,085 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:32,086 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:32,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -1137074778, now seen corresponding path program 1 times
[2023-11-29 06:57:32,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:32,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778687520]
[2023-11-29 06:57:32,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:32,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:32,866 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:32,867 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142950725]
[2023-11-29 06:57:32,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:32,868 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:32,868 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:32,869 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:32,870 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 06:57:44,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:44,361 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45217 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:57:44,459 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:44,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked.
[2023-11-29 06:57:44,884 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:57:44,884 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:44,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778687520]
[2023-11-29 06:57:44,884 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:44,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142950725]
[2023-11-29 06:57:44,884 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [142950725] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:57:44,884 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:57:44,886 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:57:44,886 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360068598]
[2023-11-29 06:57:44,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:44,890 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:57:44,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:44,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:57:44,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:57:44,895 INFO  L87              Difference]: Start difference. First operand 13567 states and 22565 transitions. Second operand  has 7 states, 7 states have (on average 1169.4285714285713) internal successors, (8186), 7 states have internal predecessors, (8186), 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 06:57:45,719 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:45,719 INFO  L93              Difference]: Finished difference Result 36920 states and 61395 transitions.
[2023-11-29 06:57:45,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:57:45,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1169.4285714285713) internal successors, (8186), 7 states have internal predecessors, (8186), 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 9027
[2023-11-29 06:57:45,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:45,744 INFO  L225             Difference]: With dead ends: 36920
[2023-11-29 06:57:45,744 INFO  L226             Difference]: Without dead ends: 25147
[2023-11-29 06:57:45,753 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9036 GetRequests, 9024 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:57:45,754 INFO  L413           NwaCegarLoop]: 22331 mSDtfsCounter, 56273 mSDsluCounter, 87203 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56273 SdHoareTripleChecker+Valid, 109534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:45,754 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56273 Valid, 109534 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 06:57:45,776 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25147 states.
[2023-11-29 06:57:45,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 13569.
[2023-11-29 06:57:45,906 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13569 states, 13568 states have (on average 1.6632517688679245) internal successors, (22567), 13568 states have internal predecessors, (22567), 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 06:57:45,921 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 22567 transitions.
[2023-11-29 06:57:45,922 INFO  L78                 Accepts]: Start accepts. Automaton has 13569 states and 22567 transitions. Word has length 9027
[2023-11-29 06:57:45,926 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:45,926 INFO  L495      AbstractCegarLoop]: Abstraction has 13569 states and 22567 transitions.
[2023-11-29 06:57:45,928 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1169.4285714285713) internal successors, (8186), 7 states have internal predecessors, (8186), 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 06:57:45,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 13569 states and 22567 transitions.
[2023-11-29 06:57:46,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9029
[2023-11-29 06:57:46,239 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:46,240 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 06:57:46,355 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-11-29 06:57:46,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-11-29 06:57:46,441 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:46,442 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:46,443 INFO  L85        PathProgramCache]: Analyzing trace with hash 1755029350, now seen corresponding path program 1 times
[2023-11-29 06:57:46,443 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:46,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413688911]
[2023-11-29 06:57:46,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:46,444 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:47,219 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:47,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930787296]
[2023-11-29 06:57:47,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:47,221 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:47,221 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:47,221 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:47,222 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 06:57:59,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:59,447 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45220 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:57:59,553 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:00,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked.
[2023-11-29 06:58:00,006 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:58:00,007 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:00,007 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413688911]
[2023-11-29 06:58:00,007 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:00,007 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930787296]
[2023-11-29 06:58:00,007 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930787296] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:58:00,007 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:58:00,010 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:58:00,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062952831]
[2023-11-29 06:58:00,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:00,014 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:58:00,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:00,018 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:58:00,018 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:58:00,021 INFO  L87              Difference]: Start difference. First operand 13569 states and 22567 transitions. Second operand  has 7 states, 7 states have (on average 1169.857142857143) internal successors, (8189), 7 states have internal predecessors, (8189), 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 06:58:00,912 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:00,912 INFO  L93              Difference]: Finished difference Result 36926 states and 61401 transitions.
[2023-11-29 06:58:00,912 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:58:00,914 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1169.857142857143) internal successors, (8189), 7 states have internal predecessors, (8189), 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 9028
[2023-11-29 06:58:00,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:00,934 INFO  L225             Difference]: With dead ends: 36926
[2023-11-29 06:58:00,934 INFO  L226             Difference]: Without dead ends: 25148
[2023-11-29 06:58:00,939 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9037 GetRequests, 9025 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:58:00,940 INFO  L413           NwaCegarLoop]: 22326 mSDtfsCounter, 56272 mSDsluCounter, 87188 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56272 SdHoareTripleChecker+Valid, 109514 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:00,940 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56272 Valid, 109514 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:58:00,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25148 states.
[2023-11-29 06:58:01,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 13571.
[2023-11-29 06:58:01,094 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13571 states, 13570 states have (on average 1.663154016212233) internal successors, (22569), 13570 states have internal predecessors, (22569), 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 06:58:01,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13571 states to 13571 states and 22569 transitions.
[2023-11-29 06:58:01,110 INFO  L78                 Accepts]: Start accepts. Automaton has 13571 states and 22569 transitions. Word has length 9028
[2023-11-29 06:58:01,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:01,115 INFO  L495      AbstractCegarLoop]: Abstraction has 13571 states and 22569 transitions.
[2023-11-29 06:58:01,116 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1169.857142857143) internal successors, (8189), 7 states have internal predecessors, (8189), 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 06:58:01,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 13571 states and 22569 transitions.
[2023-11-29 06:58:01,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9030
[2023-11-29 06:58:01,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:01,430 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, 1]
[2023-11-29 06:58:01,562 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 06:58:01,631 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:01,631 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:01,632 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:01,633 INFO  L85        PathProgramCache]: Analyzing trace with hash 711908928, now seen corresponding path program 1 times
[2023-11-29 06:58:01,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:01,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201329282]
[2023-11-29 06:58:01,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:01,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:02,464 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:02,464 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807950764]
[2023-11-29 06:58:02,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:02,466 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:02,466 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:02,467 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:02,468 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 06:58:14,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:15,071 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45223 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:58:15,184 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:15,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked.
[2023-11-29 06:58:15,647 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:58:15,648 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:15,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201329282]
[2023-11-29 06:58:15,648 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:15,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807950764]
[2023-11-29 06:58:15,648 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807950764] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:58:15,648 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:58:15,651 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:58:15,651 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033896058]
[2023-11-29 06:58:15,651 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:15,655 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:58:15,655 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:15,659 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:58:15,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:58:15,661 INFO  L87              Difference]: Start difference. First operand 13571 states and 22569 transitions. Second operand  has 7 states, 7 states have (on average 1170.2857142857142) internal successors, (8192), 7 states have internal predecessors, (8192), 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 06:58:16,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:16,544 INFO  L93              Difference]: Finished difference Result 36932 states and 61407 transitions.
[2023-11-29 06:58:16,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:58:16,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1170.2857142857142) internal successors, (8192), 7 states have internal predecessors, (8192), 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 9029
[2023-11-29 06:58:16,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:16,570 INFO  L225             Difference]: With dead ends: 36932
[2023-11-29 06:58:16,570 INFO  L226             Difference]: Without dead ends: 25149
[2023-11-29 06:58:16,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9038 GetRequests, 9026 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:58:16,579 INFO  L413           NwaCegarLoop]: 22321 mSDtfsCounter, 56271 mSDsluCounter, 87173 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56271 SdHoareTripleChecker+Valid, 109494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:16,579 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56271 Valid, 109494 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:58:16,603 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25149 states.
[2023-11-29 06:58:16,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25149 to 13573.
[2023-11-29 06:58:16,747 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13573 states, 13572 states have (on average 1.6630562923666372) internal successors, (22571), 13572 states have internal predecessors, (22571), 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 06:58:16,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13573 states to 13573 states and 22571 transitions.
[2023-11-29 06:58:16,762 INFO  L78                 Accepts]: Start accepts. Automaton has 13573 states and 22571 transitions. Word has length 9029
[2023-11-29 06:58:16,767 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:16,767 INFO  L495      AbstractCegarLoop]: Abstraction has 13573 states and 22571 transitions.
[2023-11-29 06:58:16,769 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1170.2857142857142) internal successors, (8192), 7 states have internal predecessors, (8192), 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 06:58:16,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 13573 states and 22571 transitions.
[2023-11-29 06:58:17,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9031
[2023-11-29 06:58:17,084 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:17,086 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, 1, 1, 1]
[2023-11-29 06:58:17,215 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 06:58:17,286 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 06:58:17,286 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:17,287 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:17,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -2066254900, now seen corresponding path program 1 times
[2023-11-29 06:58:17,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:17,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826570275]
[2023-11-29 06:58:17,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:17,289 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:18,105 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:18,105 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719694787]
[2023-11-29 06:58:18,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:18,106 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:18,107 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:18,107 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:18,109 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 06:58:30,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:30,398 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45226 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:58:30,498 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:30,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked.
[2023-11-29 06:58:30,944 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:58:30,944 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:30,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826570275]
[2023-11-29 06:58:30,944 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:30,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719694787]
[2023-11-29 06:58:30,944 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719694787] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:58:30,944 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:58:30,947 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:58:30,947 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459072767]
[2023-11-29 06:58:30,947 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:30,953 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:58:30,953 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:30,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:58:30,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:58:30,961 INFO  L87              Difference]: Start difference. First operand 13573 states and 22571 transitions. Second operand  has 7 states, 7 states have (on average 1170.7142857142858) internal successors, (8195), 7 states have internal predecessors, (8195), 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 06:58:31,840 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:31,840 INFO  L93              Difference]: Finished difference Result 36938 states and 61413 transitions.
[2023-11-29 06:58:31,841 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:58:31,842 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1170.7142857142858) internal successors, (8195), 7 states have internal predecessors, (8195), 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 9030
[2023-11-29 06:58:31,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:31,859 INFO  L225             Difference]: With dead ends: 36938
[2023-11-29 06:58:31,860 INFO  L226             Difference]: Without dead ends: 25150
[2023-11-29 06:58:31,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9039 GetRequests, 9027 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:58:31,865 INFO  L413           NwaCegarLoop]: 22316 mSDtfsCounter, 56270 mSDsluCounter, 87158 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56270 SdHoareTripleChecker+Valid, 109474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:31,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56270 Valid, 109474 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:58:31,884 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25150 states.
[2023-11-29 06:58:31,999 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25150 to 13575.
[2023-11-29 06:58:32,011 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13575 states, 13574 states have (on average 1.662958597318403) internal successors, (22573), 13574 states have internal predecessors, (22573), 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 06:58:32,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13575 states to 13575 states and 22573 transitions.
[2023-11-29 06:58:32,027 INFO  L78                 Accepts]: Start accepts. Automaton has 13575 states and 22573 transitions. Word has length 9030
[2023-11-29 06:58:32,031 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:32,032 INFO  L495      AbstractCegarLoop]: Abstraction has 13575 states and 22573 transitions.
[2023-11-29 06:58:32,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1170.7142857142858) internal successors, (8195), 7 states have internal predecessors, (8195), 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 06:58:32,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 13575 states and 22573 transitions.
[2023-11-29 06:58:32,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9032
[2023-11-29 06:58:32,348 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:32,350 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, 1, 1, 1, 1, 1]
[2023-11-29 06:58:32,478 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 06:58:32,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-11-29 06:58:32,550 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:32,551 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:32,552 INFO  L85        PathProgramCache]: Analyzing trace with hash -989239204, now seen corresponding path program 1 times
[2023-11-29 06:58:32,552 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:32,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223900091]
[2023-11-29 06:58:32,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:32,553 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:33,377 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:33,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033035631]
[2023-11-29 06:58:33,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:33,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:33,379 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:33,380 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:33,381 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 06:58:44,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:45,300 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45230 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:58:45,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:45,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked.
[2023-11-29 06:58:45,837 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:58:45,837 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:45,837 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223900091]
[2023-11-29 06:58:45,837 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:45,837 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033035631]
[2023-11-29 06:58:45,837 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033035631] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:58:45,837 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:58:45,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:58:45,840 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466381015]
[2023-11-29 06:58:45,840 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:45,844 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:58:45,844 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:45,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:58:45,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:58:45,849 INFO  L87              Difference]: Start difference. First operand 13575 states and 22573 transitions. Second operand  has 7 states, 7 states have (on average 1171.142857142857) internal successors, (8198), 7 states have internal predecessors, (8198), 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 06:58:46,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:46,714 INFO  L93              Difference]: Finished difference Result 36944 states and 61419 transitions.
[2023-11-29 06:58:46,714 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:58:46,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1171.142857142857) internal successors, (8198), 7 states have internal predecessors, (8198), 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 9031
[2023-11-29 06:58:46,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:46,738 INFO  L225             Difference]: With dead ends: 36944
[2023-11-29 06:58:46,738 INFO  L226             Difference]: Without dead ends: 25151
[2023-11-29 06:58:46,746 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9040 GetRequests, 9028 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:58:46,747 INFO  L413           NwaCegarLoop]: 22311 mSDtfsCounter, 56269 mSDsluCounter, 87143 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56269 SdHoareTripleChecker+Valid, 109454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:46,747 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56269 Valid, 109454 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:58:46,768 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25151 states.
[2023-11-29 06:58:46,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 13577.
[2023-11-29 06:58:46,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13577 states, 13576 states have (on average 1.6628609310548026) internal successors, (22575), 13576 states have internal predecessors, (22575), 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 06:58:46,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13577 states to 13577 states and 22575 transitions.
[2023-11-29 06:58:46,921 INFO  L78                 Accepts]: Start accepts. Automaton has 13577 states and 22575 transitions. Word has length 9031
[2023-11-29 06:58:46,926 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:46,926 INFO  L495      AbstractCegarLoop]: Abstraction has 13577 states and 22575 transitions.
[2023-11-29 06:58:46,928 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1171.142857142857) internal successors, (8198), 7 states have internal predecessors, (8198), 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 06:58:46,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 13577 states and 22575 transitions.
[2023-11-29 06:58:47,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9033
[2023-11-29 06:58:47,238 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:47,240 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, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:58:47,366 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0
[2023-11-29 06:58:47,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 06:58:47,441 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:47,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:47,442 INFO  L85        PathProgramCache]: Analyzing trace with hash 1615578548, now seen corresponding path program 1 times
[2023-11-29 06:58:47,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:47,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888722823]
[2023-11-29 06:58:47,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:47,443 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:48,279 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:48,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279549408]
[2023-11-29 06:58:48,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:48,281 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:48,281 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:48,282 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:48,282 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 06:59:00,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:00,623 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45233 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:59:00,729 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:01,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked.
[2023-11-29 06:59:01,169 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:59:01,169 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:01,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888722823]
[2023-11-29 06:59:01,170 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:01,170 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279549408]
[2023-11-29 06:59:01,170 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [279549408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:59:01,170 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:59:01,173 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:59:01,173 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137000320]
[2023-11-29 06:59:01,173 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:01,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:59:01,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:01,181 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:59:01,181 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:59:01,183 INFO  L87              Difference]: Start difference. First operand 13577 states and 22575 transitions. Second operand  has 7 states, 7 states have (on average 1171.5714285714287) internal successors, (8201), 7 states have internal predecessors, (8201), 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 06:59:01,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:01,901 INFO  L93              Difference]: Finished difference Result 36950 states and 61425 transitions.
[2023-11-29 06:59:01,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:59:01,903 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1171.5714285714287) internal successors, (8201), 7 states have internal predecessors, (8201), 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 9032
[2023-11-29 06:59:01,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:01,928 INFO  L225             Difference]: With dead ends: 36950
[2023-11-29 06:59:01,928 INFO  L226             Difference]: Without dead ends: 25152
[2023-11-29 06:59:01,937 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9041 GetRequests, 9029 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:59:01,938 INFO  L413           NwaCegarLoop]: 22306 mSDtfsCounter, 56268 mSDsluCounter, 87128 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56268 SdHoareTripleChecker+Valid, 109434 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:01,938 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56268 Valid, 109434 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:59:01,961 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25152 states.
[2023-11-29 06:59:02,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25152 to 13579.
[2023-11-29 06:59:02,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13579 states, 13578 states have (on average 1.662763293563117) internal successors, (22577), 13578 states have internal predecessors, (22577), 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 06:59:02,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13579 states to 13579 states and 22577 transitions.
[2023-11-29 06:59:02,287 INFO  L78                 Accepts]: Start accepts. Automaton has 13579 states and 22577 transitions. Word has length 9032
[2023-11-29 06:59:02,291 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:02,291 INFO  L495      AbstractCegarLoop]: Abstraction has 13579 states and 22577 transitions.
[2023-11-29 06:59:02,293 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1171.5714285714287) internal successors, (8201), 7 states have internal predecessors, (8201), 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 06:59:02,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 13579 states and 22577 transitions.
[2023-11-29 06:59:02,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9034
[2023-11-29 06:59:02,602 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:02,603 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 06:59:02,723 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 06:59:02,804 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:02,804 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:02,804 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:02,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 1523582198, now seen corresponding path program 1 times
[2023-11-29 06:59:02,805 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:02,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265381748]
[2023-11-29 06:59:02,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:02,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:03,636 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:03,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569457523]
[2023-11-29 06:59:03,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:03,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:03,638 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:03,639 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:03,640 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 06:59:15,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:15,963 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45236 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:59:16,061 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:16,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked.
[2023-11-29 06:59:16,518 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:59:16,518 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:16,518 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265381748]
[2023-11-29 06:59:16,518 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:16,518 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569457523]
[2023-11-29 06:59:16,518 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569457523] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:59:16,518 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:59:16,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:59:16,521 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161266632]
[2023-11-29 06:59:16,521 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:16,526 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:59:16,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:16,530 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:59:16,531 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:59:16,532 INFO  L87              Difference]: Start difference. First operand 13579 states and 22577 transitions. Second operand  has 7 states, 7 states have (on average 1172.0) internal successors, (8204), 7 states have internal predecessors, (8204), 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 06:59:17,402 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:17,402 INFO  L93              Difference]: Finished difference Result 36956 states and 61431 transitions.
[2023-11-29 06:59:17,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:59:17,404 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1172.0) internal successors, (8204), 7 states have internal predecessors, (8204), 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 9033
[2023-11-29 06:59:17,409 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:17,422 INFO  L225             Difference]: With dead ends: 36956
[2023-11-29 06:59:17,422 INFO  L226             Difference]: Without dead ends: 25153
[2023-11-29 06:59:17,427 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9042 GetRequests, 9030 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:59:17,428 INFO  L413           NwaCegarLoop]: 22301 mSDtfsCounter, 56267 mSDsluCounter, 87113 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56267 SdHoareTripleChecker+Valid, 109414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:17,428 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56267 Valid, 109414 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:59:17,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25153 states.
[2023-11-29 06:59:17,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25153 to 13581.
[2023-11-29 06:59:17,564 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13581 states, 13580 states have (on average 1.6626656848306334) internal successors, (22579), 13580 states have internal predecessors, (22579), 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 06:59:17,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13581 states to 13581 states and 22579 transitions.
[2023-11-29 06:59:17,579 INFO  L78                 Accepts]: Start accepts. Automaton has 13581 states and 22579 transitions. Word has length 9033
[2023-11-29 06:59:17,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:17,584 INFO  L495      AbstractCegarLoop]: Abstraction has 13581 states and 22579 transitions.
[2023-11-29 06:59:17,585 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1172.0) internal successors, (8204), 7 states have internal predecessors, (8204), 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 06:59:17,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 13581 states and 22579 transitions.
[2023-11-29 06:59:17,894 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9035
[2023-11-29 06:59:17,894 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:17,895 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 06:59:18,012 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 06:59:18,096 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:18,096 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:18,096 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:18,097 INFO  L85        PathProgramCache]: Analyzing trace with hash 1189944858, now seen corresponding path program 1 times
[2023-11-29 06:59:18,097 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:18,097 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427462079]
[2023-11-29 06:59:18,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:18,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:18,871 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:18,871 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675538579]
[2023-11-29 06:59:18,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:18,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:18,873 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:18,873 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:18,874 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 06:59:30,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:30,891 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45239 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 06:59:30,988 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:31,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked.
[2023-11-29 06:59:31,452 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:59:31,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:31,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427462079]
[2023-11-29 06:59:31,453 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:31,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675538579]
[2023-11-29 06:59:31,453 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675538579] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:59:31,453 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:59:31,456 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 06:59:31,456 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532940024]
[2023-11-29 06:59:31,456 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:31,461 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 06:59:31,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:31,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 06:59:31,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:59:31,466 INFO  L87              Difference]: Start difference. First operand 13581 states and 22579 transitions. Second operand  has 8 states, 8 states have (on average 1025.875) internal successors, (8207), 8 states have internal predecessors, (8207), 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 06:59:32,407 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:32,407 INFO  L93              Difference]: Finished difference Result 36962 states and 61437 transitions.
[2023-11-29 06:59:32,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:59:32,409 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1025.875) internal successors, (8207), 8 states have internal predecessors, (8207), 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 9034
[2023-11-29 06:59:32,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:32,427 INFO  L225             Difference]: With dead ends: 36962
[2023-11-29 06:59:32,427 INFO  L226             Difference]: Without dead ends: 25154
[2023-11-29 06:59:32,432 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9043 GetRequests, 9030 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-11-29 06:59:32,432 INFO  L413           NwaCegarLoop]: 22296 mSDtfsCounter, 56266 mSDsluCounter, 106320 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56266 SdHoareTripleChecker+Valid, 128616 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:32,432 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56266 Valid, 128616 Invalid, 54 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:59:32,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25154 states.
[2023-11-29 06:59:32,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 13583.
[2023-11-29 06:59:32,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13583 states, 13582 states have (on average 1.6625681048446472) internal successors, (22581), 13582 states have internal predecessors, (22581), 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 06:59:32,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13583 states to 13583 states and 22581 transitions.
[2023-11-29 06:59:32,584 INFO  L78                 Accepts]: Start accepts. Automaton has 13583 states and 22581 transitions. Word has length 9034
[2023-11-29 06:59:32,588 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:32,588 INFO  L495      AbstractCegarLoop]: Abstraction has 13583 states and 22581 transitions.
[2023-11-29 06:59:32,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1025.875) internal successors, (8207), 8 states have internal predecessors, (8207), 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 06:59:32,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 13583 states and 22581 transitions.
[2023-11-29 06:59:32,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9036
[2023-11-29 06:59:32,898 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:32,900 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 06:59:33,016 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 06:59:33,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:33,101 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:33,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:33,102 INFO  L85        PathProgramCache]: Analyzing trace with hash -19990510, now seen corresponding path program 1 times
[2023-11-29 06:59:33,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:33,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263740698]
[2023-11-29 06:59:33,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:33,103 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:33,876 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:33,876 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7984301]
[2023-11-29 06:59:33,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:33,877 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:33,877 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:33,878 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:33,879 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 06:59:45,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:46,077 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45243 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:59:46,188 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:46,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked.
[2023-11-29 06:59:46,633 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:59:46,634 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:46,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263740698]
[2023-11-29 06:59:46,634 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:46,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7984301]
[2023-11-29 06:59:46,634 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [7984301] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:59:46,634 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:59:46,637 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 06:59:46,637 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200744098]
[2023-11-29 06:59:46,637 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:46,642 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 06:59:46,642 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:46,647 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 06:59:46,647 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 06:59:46,649 INFO  L87              Difference]: Start difference. First operand 13583 states and 22581 transitions. Second operand  has 7 states, 7 states have (on average 1172.857142857143) internal successors, (8210), 7 states have internal predecessors, (8210), 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 06:59:47,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:47,521 INFO  L93              Difference]: Finished difference Result 36968 states and 61443 transitions.
[2023-11-29 06:59:47,521 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 06:59:47,522 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1172.857142857143) internal successors, (8210), 7 states have internal predecessors, (8210), 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 9035
[2023-11-29 06:59:47,528 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:47,542 INFO  L225             Difference]: With dead ends: 36968
[2023-11-29 06:59:47,542 INFO  L226             Difference]: Without dead ends: 25155
[2023-11-29 06:59:47,549 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9044 GetRequests, 9032 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:59:47,549 INFO  L413           NwaCegarLoop]: 22291 mSDtfsCounter, 56265 mSDsluCounter, 87083 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56265 SdHoareTripleChecker+Valid, 109374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:47,549 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56265 Valid, 109374 Invalid, 48 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:59:47,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25155 states.
[2023-11-29 06:59:47,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 13585.
[2023-11-29 06:59:47,695 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13585 states, 13584 states have (on average 1.6624705535924618) internal successors, (22583), 13584 states have internal predecessors, (22583), 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 06:59:47,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 22583 transitions.
[2023-11-29 06:59:47,710 INFO  L78                 Accepts]: Start accepts. Automaton has 13585 states and 22583 transitions. Word has length 9035
[2023-11-29 06:59:47,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:47,715 INFO  L495      AbstractCegarLoop]: Abstraction has 13585 states and 22583 transitions.
[2023-11-29 06:59:47,716 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1172.857142857143) internal successors, (8210), 7 states have internal predecessors, (8210), 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 06:59:47,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 13585 states and 22583 transitions.
[2023-11-29 06:59:48,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9037
[2023-11-29 06:59:48,025 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:48,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:59:48,147 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-11-29 06:59:48,227 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43
[2023-11-29 06:59:48,228 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:48,228 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:48,229 INFO  L85        PathProgramCache]: Analyzing trace with hash -646610686, now seen corresponding path program 1 times
[2023-11-29 06:59:48,229 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:48,229 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752070816]
[2023-11-29 06:59:48,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:48,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:49,030 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:49,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373617879]
[2023-11-29 06:59:49,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:49,032 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:49,032 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:49,033 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:49,034 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-11-29 07:00:00,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:01,156 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45246 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:00:01,259 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:01,687 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked.
[2023-11-29 07:00:01,687 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:00:01,687 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:01,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752070816]
[2023-11-29 07:00:01,688 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:01,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373617879]
[2023-11-29 07:00:01,688 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [373617879] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:00:01,688 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:00:01,691 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 07:00:01,691 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204380475]
[2023-11-29 07:00:01,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:01,696 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 07:00:01,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:01,701 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 07:00:01,701 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 07:00:01,703 INFO  L87              Difference]: Start difference. First operand 13585 states and 22583 transitions. Second operand  has 7 states, 7 states have (on average 1173.2857142857142) internal successors, (8213), 7 states have internal predecessors, (8213), 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 07:00:02,407 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:02,407 INFO  L93              Difference]: Finished difference Result 36974 states and 61449 transitions.
[2023-11-29 07:00:02,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 07:00:02,409 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1173.2857142857142) internal successors, (8213), 7 states have internal predecessors, (8213), 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 9036
[2023-11-29 07:00:02,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:02,433 INFO  L225             Difference]: With dead ends: 36974
[2023-11-29 07:00:02,433 INFO  L226             Difference]: Without dead ends: 25156
[2023-11-29 07:00:02,442 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9045 GetRequests, 9033 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 07:00:02,442 INFO  L413           NwaCegarLoop]: 22286 mSDtfsCounter, 56264 mSDsluCounter, 87068 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56264 SdHoareTripleChecker+Valid, 109354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:02,442 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56264 Valid, 109354 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:00:02,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25156 states.
[2023-11-29 07:00:02,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25156 to 13587.
[2023-11-29 07:00:02,620 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13587 states, 13586 states have (on average 1.6623730310613867) internal successors, (22585), 13586 states have internal predecessors, (22585), 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 07:00:02,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 22585 transitions.
[2023-11-29 07:00:02,636 INFO  L78                 Accepts]: Start accepts. Automaton has 13587 states and 22585 transitions. Word has length 9036
[2023-11-29 07:00:02,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:02,640 INFO  L495      AbstractCegarLoop]: Abstraction has 13587 states and 22585 transitions.
[2023-11-29 07:00:02,642 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1173.2857142857142) internal successors, (8213), 7 states have internal predecessors, (8213), 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 07:00:02,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 13587 states and 22585 transitions.
[2023-11-29 07:00:03,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9038
[2023-11-29 07:00:03,077 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:03,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 07:00:03,195 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2023-11-29 07:00:03,279 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44
[2023-11-29 07:00:03,279 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:03,279 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:03,280 INFO  L85        PathProgramCache]: Analyzing trace with hash -301240148, now seen corresponding path program 1 times
[2023-11-29 07:00:03,281 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:03,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162364068]
[2023-11-29 07:00:03,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:03,281 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:04,076 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:04,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329953342]
[2023-11-29 07:00:04,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:04,077 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:04,078 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:04,078 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:04,079 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 07:00:15,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:15,551 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45249 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:00:15,648 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:16,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked.
[2023-11-29 07:00:16,085 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:00:16,085 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:16,085 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162364068]
[2023-11-29 07:00:16,085 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:16,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329953342]
[2023-11-29 07:00:16,086 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329953342] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:00:16,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:00:16,088 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 07:00:16,089 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419751578]
[2023-11-29 07:00:16,089 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:16,094 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 07:00:16,094 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:16,098 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 07:00:16,098 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 07:00:16,100 INFO  L87              Difference]: Start difference. First operand 13587 states and 22585 transitions. Second operand  has 7 states, 7 states have (on average 1173.7142857142858) internal successors, (8216), 7 states have internal predecessors, (8216), 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 07:00:16,956 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:16,956 INFO  L93              Difference]: Finished difference Result 36980 states and 61455 transitions.
[2023-11-29 07:00:16,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 07:00:16,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1173.7142857142858) internal successors, (8216), 7 states have internal predecessors, (8216), 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 9037
[2023-11-29 07:00:16,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:16,980 INFO  L225             Difference]: With dead ends: 36980
[2023-11-29 07:00:16,981 INFO  L226             Difference]: Without dead ends: 25157
[2023-11-29 07:00:16,989 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9046 GetRequests, 9034 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 07:00:16,990 INFO  L413           NwaCegarLoop]: 22281 mSDtfsCounter, 56263 mSDsluCounter, 87053 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56263 SdHoareTripleChecker+Valid, 109334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:16,990 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56263 Valid, 109334 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-29 07:00:17,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25157 states.
[2023-11-29 07:00:17,128 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25157 to 13589.
[2023-11-29 07:00:17,139 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13589 states, 13588 states have (on average 1.66227553723874) internal successors, (22587), 13588 states have internal predecessors, (22587), 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 07:00:17,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13589 states to 13589 states and 22587 transitions.
[2023-11-29 07:00:17,154 INFO  L78                 Accepts]: Start accepts. Automaton has 13589 states and 22587 transitions. Word has length 9037
[2023-11-29 07:00:17,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:17,159 INFO  L495      AbstractCegarLoop]: Abstraction has 13589 states and 22587 transitions.
[2023-11-29 07:00:17,160 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1173.7142857142858) internal successors, (8216), 7 states have internal predecessors, (8216), 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 07:00:17,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 13589 states and 22587 transitions.
[2023-11-29 07:00:17,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9039
[2023-11-29 07:00:17,469 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:17,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 07:00:17,585 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-11-29 07:00:17,671 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45
[2023-11-29 07:00:17,672 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:17,672 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:17,673 INFO  L85        PathProgramCache]: Analyzing trace with hash 1595399528, now seen corresponding path program 1 times
[2023-11-29 07:00:17,673 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:17,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620873822]
[2023-11-29 07:00:17,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:17,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:18,456 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:18,457 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910531735]
[2023-11-29 07:00:18,458 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:18,458 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:18,458 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:18,459 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:18,460 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 07:00:29,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:30,163 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45252 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:00:30,258 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:30,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked.
[2023-11-29 07:00:30,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:00:30,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:30,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620873822]
[2023-11-29 07:00:30,707 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:30,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910531735]
[2023-11-29 07:00:30,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910531735] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:00:30,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:00:30,709 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 07:00:30,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323040009]
[2023-11-29 07:00:30,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:30,713 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 07:00:30,713 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:30,716 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 07:00:30,716 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 07:00:30,718 INFO  L87              Difference]: Start difference. First operand 13589 states and 22587 transitions. Second operand  has 7 states, 7 states have (on average 1174.142857142857) internal successors, (8219), 7 states have internal predecessors, (8219), 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 07:00:31,430 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:31,430 INFO  L93              Difference]: Finished difference Result 36986 states and 61461 transitions.
[2023-11-29 07:00:31,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 07:00:31,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1174.142857142857) internal successors, (8219), 7 states have internal predecessors, (8219), 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 9038
[2023-11-29 07:00:31,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:31,456 INFO  L225             Difference]: With dead ends: 36986
[2023-11-29 07:00:31,456 INFO  L226             Difference]: Without dead ends: 25158
[2023-11-29 07:00:31,465 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9047 GetRequests, 9035 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 07:00:31,466 INFO  L413           NwaCegarLoop]: 22276 mSDtfsCounter, 56262 mSDsluCounter, 87038 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56262 SdHoareTripleChecker+Valid, 109314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:31,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56262 Valid, 109314 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:00:31,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25158 states.
[2023-11-29 07:00:31,787 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25158 to 13591.
[2023-11-29 07:00:31,798 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13591 states, 13590 states have (on average 1.6621780721118469) internal successors, (22589), 13590 states have internal predecessors, (22589), 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 07:00:31,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13591 states to 13591 states and 22589 transitions.
[2023-11-29 07:00:31,812 INFO  L78                 Accepts]: Start accepts. Automaton has 13591 states and 22589 transitions. Word has length 9038
[2023-11-29 07:00:31,816 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:31,817 INFO  L495      AbstractCegarLoop]: Abstraction has 13591 states and 22589 transitions.
[2023-11-29 07:00:31,818 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1174.142857142857) internal successors, (8219), 7 states have internal predecessors, (8219), 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 07:00:31,818 INFO  L276                IsEmpty]: Start isEmpty. Operand 13591 states and 22589 transitions.
[2023-11-29 07:00:32,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9040
[2023-11-29 07:00:32,126 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:32,128 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 07:00:32,242 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2023-11-29 07:00:32,328 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-11-29 07:00:32,328 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:32,329 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:32,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 1183304904, now seen corresponding path program 1 times
[2023-11-29 07:00:32,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:32,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205748953]
[2023-11-29 07:00:32,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:32,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:33,101 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:33,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084610246]
[2023-11-29 07:00:33,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:33,103 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:33,103 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:33,104 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:33,104 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 07:00:44,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:44,957 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45256 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:00:45,058 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:45,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked.
[2023-11-29 07:00:45,477 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:00:45,477 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:45,477 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205748953]
[2023-11-29 07:00:45,477 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:45,477 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084610246]
[2023-11-29 07:00:45,477 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084610246] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:00:45,477 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:00:45,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 07:00:45,481 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163013691]
[2023-11-29 07:00:45,481 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:45,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 07:00:45,486 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:45,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 07:00:45,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 07:00:45,491 INFO  L87              Difference]: Start difference. First operand 13591 states and 22589 transitions. Second operand  has 7 states, 7 states have (on average 1174.5714285714287) internal successors, (8222), 7 states have internal predecessors, (8222), 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 07:00:46,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:46,329 INFO  L93              Difference]: Finished difference Result 36992 states and 61467 transitions.
[2023-11-29 07:00:46,330 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 07:00:46,331 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1174.5714285714287) internal successors, (8222), 7 states have internal predecessors, (8222), 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 9039
[2023-11-29 07:00:46,337 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:46,354 INFO  L225             Difference]: With dead ends: 36992
[2023-11-29 07:00:46,354 INFO  L226             Difference]: Without dead ends: 25159
[2023-11-29 07:00:46,363 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9048 GetRequests, 9036 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 07:00:46,363 INFO  L413           NwaCegarLoop]: 22271 mSDtfsCounter, 56261 mSDsluCounter, 87023 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56261 SdHoareTripleChecker+Valid, 109294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:46,364 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56261 Valid, 109294 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 07:00:46,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25159 states.
[2023-11-29 07:00:46,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25159 to 13593.
[2023-11-29 07:00:46,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13593 states, 13592 states have (on average 1.66208063566804) internal successors, (22591), 13592 states have internal predecessors, (22591), 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 07:00:46,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13593 states to 13593 states and 22591 transitions.
[2023-11-29 07:00:46,529 INFO  L78                 Accepts]: Start accepts. Automaton has 13593 states and 22591 transitions. Word has length 9039
[2023-11-29 07:00:46,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:46,534 INFO  L495      AbstractCegarLoop]: Abstraction has 13593 states and 22591 transitions.
[2023-11-29 07:00:46,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1174.5714285714287) internal successors, (8222), 7 states have internal predecessors, (8222), 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 07:00:46,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 13593 states and 22591 transitions.
[2023-11-29 07:00:46,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9041
[2023-11-29 07:00:46,845 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:46,846 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 07:00:46,964 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-11-29 07:00:47,047 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-11-29 07:00:47,047 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:47,047 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:47,049 INFO  L85        PathProgramCache]: Analyzing trace with hash -393981616, now seen corresponding path program 1 times
[2023-11-29 07:00:47,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:47,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595707976]
[2023-11-29 07:00:47,051 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:47,052 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:47,826 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:47,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022666912]
[2023-11-29 07:00:47,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:47,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:47,828 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:47,829 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:47,830 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 07:00:59,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:59,417 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45259 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:00:59,513 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:59,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked.
[2023-11-29 07:00:59,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:00:59,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:59,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595707976]
[2023-11-29 07:00:59,963 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:59,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022666912]
[2023-11-29 07:00:59,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022666912] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:00:59,963 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:00:59,966 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 07:00:59,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696806018]
[2023-11-29 07:00:59,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:59,971 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 07:00:59,971 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:59,974 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 07:00:59,974 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 07:00:59,976 INFO  L87              Difference]: Start difference. First operand 13593 states and 22591 transitions. Second operand  has 7 states, 7 states have (on average 1175.0) internal successors, (8225), 7 states have internal predecessors, (8225), 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 07:01:00,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:00,673 INFO  L93              Difference]: Finished difference Result 36998 states and 61473 transitions.
[2023-11-29 07:01:00,674 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-29 07:01:00,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1175.0) internal successors, (8225), 7 states have internal predecessors, (8225), 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 9040
[2023-11-29 07:01:00,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:00,699 INFO  L225             Difference]: With dead ends: 36998
[2023-11-29 07:01:00,699 INFO  L226             Difference]: Without dead ends: 25160
[2023-11-29 07:01:00,708 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9049 GetRequests, 9037 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-11-29 07:01:00,708 INFO  L413           NwaCegarLoop]: 22266 mSDtfsCounter, 56260 mSDsluCounter, 87008 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56260 SdHoareTripleChecker+Valid, 109274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:00,708 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56260 Valid, 109274 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:01:00,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25160 states.
[2023-11-29 07:01:01,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25160 to 13595.
[2023-11-29 07:01:01,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13595 states, 13594 states have (on average 1.6619832278946594) internal successors, (22593), 13594 states have internal predecessors, (22593), 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 07:01:01,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13595 states to 13595 states and 22593 transitions.
[2023-11-29 07:01:01,048 INFO  L78                 Accepts]: Start accepts. Automaton has 13595 states and 22593 transitions. Word has length 9040
[2023-11-29 07:01:01,052 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:01,053 INFO  L495      AbstractCegarLoop]: Abstraction has 13595 states and 22593 transitions.
[2023-11-29 07:01:01,054 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1175.0) internal successors, (8225), 7 states have internal predecessors, (8225), 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 07:01:01,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 13595 states and 22593 transitions.
[2023-11-29 07:01:01,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9042
[2023-11-29 07:01:01,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:01,364 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 07:01:01,479 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-11-29 07:01:01,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2023-11-29 07:01:01,565 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:01,565 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:01,566 INFO  L85        PathProgramCache]: Analyzing trace with hash 1662951778, now seen corresponding path program 1 times
[2023-11-29 07:01:01,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:01,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90691865]
[2023-11-29 07:01:01,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:01,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:02,344 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:02,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867723923]
[2023-11-29 07:01:02,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:02,346 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:02,346 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:02,346 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:02,347 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ceb53d-56a8-4ca3-a836-b5a17e0fbd99/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process