./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/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_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/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_b4d60199-30bb-40db-af0d-9493b261db56/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 151f916d19a45d79e91e721154cb14124efb0c8a2e3cc9bfc6435e43f742a3b0
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 03:53:16,048 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 03:53:16,111 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 03:53:16,116 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 03:53:16,117 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 03:53:16,142 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 03:53:16,143 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 03:53:16,143 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 03:53:16,144 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 03:53:16,145 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 03:53:16,145 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 03:53:16,146 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 03:53:16,147 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 03:53:16,147 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 03:53:16,147 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 03:53:16,148 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 03:53:16,149 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 03:53:16,149 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 03:53:16,150 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 03:53:16,150 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 03:53:16,151 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 03:53:16,151 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 03:53:16,152 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 03:53:16,152 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 03:53:16,153 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 03:53:16,153 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 03:53:16,153 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 03:53:16,154 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 03:53:16,154 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 03:53:16,155 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 03:53:16,155 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 03:53:16,155 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 03:53:16,156 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 03:53:16,156 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 03:53:16,156 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 03:53:16,157 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 03:53:16,157 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 03:53:16,157 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 03:53:16,157 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 03:53:16,157 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/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_b4d60199-30bb-40db-af0d-9493b261db56/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 -> 151f916d19a45d79e91e721154cb14124efb0c8a2e3cc9bfc6435e43f742a3b0
[2023-11-29 03:53:16,370 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 03:53:16,390 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 03:53:16,392 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 03:53:16,393 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 03:53:16,394 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 03:53:16,395 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-11-29 03:53:19,138 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 03:53:19,599 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 03:53:19,599 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-11-29 03:53:19,643 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/data/ea21a7f81/d9c6dcf8d93e4b74812cefd2b8846359/FLAGd64ebc1f9
[2023-11-29 03:53:19,657 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/data/ea21a7f81/d9c6dcf8d93e4b74812cefd2b8846359
[2023-11-29 03:53:19,659 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 03:53:19,661 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 03:53:19,662 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 03:53:19,662 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 03:53:19,667 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 03:53:19,668 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:53:19" (1/1) ...
[2023-11-29 03:53:19,669 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645cefeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:19, skipping insertion in model container
[2023-11-29 03:53:19,669 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:53:19" (1/1) ...
[2023-11-29 03:53:19,838 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 03:53:20,169 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_b4d60199-30bb-40db-af0d-9493b261db56/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c[1179,1192]
[2023-11-29 03:53:21,423 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 03:53:21,434 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 03:53:21,447 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_b4d60199-30bb-40db-af0d-9493b261db56/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c[1179,1192]
[2023-11-29 03:53:22,360 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 03:53:22,375 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 03:53:22,376 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22 WrapperNode
[2023-11-29 03:53:22,376 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 03:53:22,377 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 03:53:22,377 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 03:53:22,377 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 03:53:22,385 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:22,639 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:25,466 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49602
[2023-11-29 03:53:25,466 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 03:53:25,467 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 03:53:25,467 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 03:53:25,467 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 03:53:25,479 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:25,479 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:26,100 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:26,627 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 03:53:26,628 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:26,628 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:27,303 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:27,443 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:27,560 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:27,672 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:28,309 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 03:53:28,310 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 03:53:28,310 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 03:53:28,310 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 03:53:28,311 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (1/1) ...
[2023-11-29 03:53:28,317 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 03:53:28,540 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:53:28,557 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 03:53:28,564 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 03:53:28,592 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 03:53:28,592 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 03:53:28,592 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 03:53:28,592 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 03:53:30,392 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 03:53:30,394 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 03:53:52,386 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 03:53:52,994 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 03:53:52,994 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 03:53:53,000 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:53:53 BoogieIcfgContainer
[2023-11-29 03:53:53,000 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 03:53:53,003 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 03:53:53,003 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 03:53:53,006 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 03:53:53,006 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:53:19" (1/3) ...
[2023-11-29 03:53:53,007 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e51c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:53:53, skipping insertion in model container
[2023-11-29 03:53:53,007 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:22" (2/3) ...
[2023-11-29 03:53:53,007 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e51c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:53:53, skipping insertion in model container
[2023-11-29 03:53:53,007 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:53:53" (3/3) ...
[2023-11-29 03:53:53,009 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-11-29 03:53:53,027 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 03:53:53,027 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 03:53:53,225 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 03:53:53,231 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;@6bc7c17e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 03:53:53,232 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 03:53:53,266 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states 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 03:53:53,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 487
[2023-11-29 03:53:53,300 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:53:53,301 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]
[2023-11-29 03:53:53,301 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:53:53,306 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:53:53,307 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606853880, now seen corresponding path program 1 times
[2023-11-29 03:53:53,316 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:53:53,316 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213593493]
[2023-11-29 03:53:53,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:53:53,317 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:53:53,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:53:56,109 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 03:53:56,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:53:56,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213593493]
[2023-11-29 03:53:56,111 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213593493] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:53:56,111 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:53:56,112 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 03:53:56,113 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504528801]
[2023-11-29 03:53:56,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:53:56,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:53:56,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:53:56,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:53:56,151 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 03:53:56,178 INFO  L87              Difference]: Start difference. First operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 03:54:09,705 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:09,706 INFO  L93              Difference]: Finished difference Result 31560 states and 52616 transitions.
[2023-11-29 03:54:09,707 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 03:54:09,708 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 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 486
[2023-11-29 03:54:09,710 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:09,819 INFO  L225             Difference]: With dead ends: 31560
[2023-11-29 03:54:09,819 INFO  L226             Difference]: Without dead ends: 21216
[2023-11-29 03:54:09,840 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-29 03:54:09,844 INFO  L413           NwaCegarLoop]: 13266 mSDtfsCounter, 52127 mSDsluCounter, 26526 mSDsCounter, 0 mSdLazyCounter, 14585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52127 SdHoareTripleChecker+Valid, 39792 SdHoareTripleChecker+Invalid, 14586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:09,846 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [52127 Valid, 39792 Invalid, 14586 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 14585 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time]
[2023-11-29 03:54:09,903 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21216 states.
[2023-11-29 03:54:10,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21216 to 11060.
[2023-11-29 03:54:10,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11060 states, 11059 states have (on average 1.6668776562076137) internal successors, (18434), 11059 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states 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 03:54:10,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11060 states to 11060 states and 18434 transitions.
[2023-11-29 03:54:10,226 INFO  L78                 Accepts]: Start accepts. Automaton has 11060 states and 18434 transitions. Word has length 486
[2023-11-29 03:54:10,229 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:10,229 INFO  L495      AbstractCegarLoop]: Abstraction has 11060 states and 18434 transitions.
[2023-11-29 03:54:10,230 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 03:54:10,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 11060 states and 18434 transitions.
[2023-11-29 03:54:10,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 488
[2023-11-29 03:54:10,238 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:10,239 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]
[2023-11-29 03:54:10,239 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 03:54:10,239 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:10,240 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:10,240 INFO  L85        PathProgramCache]: Analyzing trace with hash 1134022898, now seen corresponding path program 1 times
[2023-11-29 03:54:10,240 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:10,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566341984]
[2023-11-29 03:54:10,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:10,241 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:10,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:11,395 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 03:54:11,395 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:11,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566341984]
[2023-11-29 03:54:11,396 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566341984] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:11,396 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:11,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 03:54:11,397 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239670264]
[2023-11-29 03:54:11,397 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:11,399 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:54:11,400 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:11,401 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:54:11,401 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:54:11,402 INFO  L87              Difference]: Start difference. First operand 11060 states and 18434 transitions. Second operand  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 03:54:11,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:11,667 INFO  L93              Difference]: Finished difference Result 11064 states and 18438 transitions.
[2023-11-29 03:54:11,667 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:54:11,668 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 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 487
[2023-11-29 03:54:11,669 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:11,707 INFO  L225             Difference]: With dead ends: 11064
[2023-11-29 03:54:11,707 INFO  L226             Difference]: Without dead ends: 11062
[2023-11-29 03:54:11,710 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 03:54:11,711 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54364 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 03:54:11,712 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54364 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 03:54:11,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11062 states.
[2023-11-29 03:54:11,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 11062.
[2023-11-29 03:54:11,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11062 states, 11061 states have (on average 1.666757074405569) internal successors, (18436), 11061 states have internal predecessors, (18436), 0 states have call successors, (0), 0 states 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 03:54:11,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11062 states to 11062 states and 18436 transitions.
[2023-11-29 03:54:11,903 INFO  L78                 Accepts]: Start accepts. Automaton has 11062 states and 18436 transitions. Word has length 487
[2023-11-29 03:54:11,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:11,905 INFO  L495      AbstractCegarLoop]: Abstraction has 11062 states and 18436 transitions.
[2023-11-29 03:54:11,905 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 03:54:11,905 INFO  L276                IsEmpty]: Start isEmpty. Operand 11062 states and 18436 transitions.
[2023-11-29 03:54:11,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2023-11-29 03:54:11,912 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:11,912 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]
[2023-11-29 03:54:11,912 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 03:54:11,912 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:11,913 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:11,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 796699310, now seen corresponding path program 1 times
[2023-11-29 03:54:11,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:11,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155357377]
[2023-11-29 03:54:11,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:11,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:12,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:12,631 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 03:54:12,631 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:12,632 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155357377]
[2023-11-29 03:54:12,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155357377] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:12,632 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:12,632 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 03:54:12,633 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333670750]
[2023-11-29 03:54:12,633 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:12,634 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:54:12,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:12,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:54:12,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:54:12,636 INFO  L87              Difference]: Start difference. First operand 11062 states and 18436 transitions. Second operand  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 03:54:12,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:12,902 INFO  L93              Difference]: Finished difference Result 21409 states and 35682 transitions.
[2023-11-29 03:54:12,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:54:12,903 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 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 488
[2023-11-29 03:54:12,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:12,919 INFO  L225             Difference]: With dead ends: 21409
[2023-11-29 03:54:12,919 INFO  L226             Difference]: Without dead ends: 11065
[2023-11-29 03:54:12,930 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 03:54:12,931 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36239 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54362 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 03:54:12,932 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54362 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 03:54:12,948 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11065 states.
[2023-11-29 03:54:13,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 11064.
[2023-11-29 03:54:13,093 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11064 states, 11063 states have (on average 1.6666365362017537) internal successors, (18438), 11063 states have internal predecessors, (18438), 0 states have call successors, (0), 0 states 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 03:54:13,116 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11064 states to 11064 states and 18438 transitions.
[2023-11-29 03:54:13,116 INFO  L78                 Accepts]: Start accepts. Automaton has 11064 states and 18438 transitions. Word has length 488
[2023-11-29 03:54:13,117 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:13,117 INFO  L495      AbstractCegarLoop]: Abstraction has 11064 states and 18438 transitions.
[2023-11-29 03:54:13,118 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 03:54:13,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 11064 states and 18438 transitions.
[2023-11-29 03:54:13,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 490
[2023-11-29 03:54:13,126 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:13,127 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]
[2023-11-29 03:54:13,127 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 03:54:13,127 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:13,128 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:13,128 INFO  L85        PathProgramCache]: Analyzing trace with hash -1282554740, now seen corresponding path program 1 times
[2023-11-29 03:54:13,129 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:13,129 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051467017]
[2023-11-29 03:54:13,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:13,129 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:13,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:15,138 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 03:54:15,138 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:15,138 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051467017]
[2023-11-29 03:54:15,139 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051467017] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:15,139 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:15,139 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 03:54:15,139 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371518427]
[2023-11-29 03:54:15,139 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:15,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 03:54:15,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:15,141 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 03:54:15,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 03:54:15,142 INFO  L87              Difference]: Start difference. First operand 11064 states and 18438 transitions. Second operand  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 03:54:16,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:16,000 INFO  L93              Difference]: Finished difference Result 31759 states and 52930 transitions.
[2023-11-29 03:54:16,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 03:54:16,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 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 489
[2023-11-29 03:54:16,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:16,032 INFO  L225             Difference]: With dead ends: 31759
[2023-11-29 03:54:16,033 INFO  L226             Difference]: Without dead ends: 21413
[2023-11-29 03:54:16,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:54:16,048 INFO  L413           NwaCegarLoop]: 18428 mSDtfsCounter, 69047 mSDsluCounter, 54664 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69047 SdHoareTripleChecker+Valid, 73092 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:16,049 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69047 Valid, 73092 Invalid, 33 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 03:54:16,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21413 states.
[2023-11-29 03:54:16,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21413 to 11072.
[2023-11-29 03:54:16,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11072 states, 11071 states have (on average 1.6663354710504923) internal successors, (18448), 11071 states have internal predecessors, (18448), 0 states have call successors, (0), 0 states 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 03:54:16,288 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 18448 transitions.
[2023-11-29 03:54:16,288 INFO  L78                 Accepts]: Start accepts. Automaton has 11072 states and 18448 transitions. Word has length 489
[2023-11-29 03:54:16,289 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:16,289 INFO  L495      AbstractCegarLoop]: Abstraction has 11072 states and 18448 transitions.
[2023-11-29 03:54:16,290 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 03:54:16,290 INFO  L276                IsEmpty]: Start isEmpty. Operand 11072 states and 18448 transitions.
[2023-11-29 03:54:16,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-11-29 03:54:16,298 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:16,298 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]
[2023-11-29 03:54:16,298 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 03:54:16,299 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:16,299 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:16,299 INFO  L85        PathProgramCache]: Analyzing trace with hash -1273575828, now seen corresponding path program 1 times
[2023-11-29 03:54:16,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:16,300 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820490304]
[2023-11-29 03:54:16,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:16,300 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:16,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:18,566 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 03:54:18,567 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:18,567 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820490304]
[2023-11-29 03:54:18,567 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820490304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:18,567 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:18,568 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 03:54:18,568 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366748401]
[2023-11-29 03:54:18,568 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:18,569 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 03:54:18,569 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:18,570 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 03:54:18,571 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 03:54:18,571 INFO  L87              Difference]: Start difference. First operand 11072 states and 18448 transitions. Second operand  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 03:54:20,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:20,756 INFO  L93              Difference]: Finished difference Result 31775 states and 52946 transitions.
[2023-11-29 03:54:20,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 03:54:20,757 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 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 490
[2023-11-29 03:54:20,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:20,803 INFO  L225             Difference]: With dead ends: 31775
[2023-11-29 03:54:20,803 INFO  L226             Difference]: Without dead ends: 21415
[2023-11-29 03:54:20,820 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2023-11-29 03:54:20,821 INFO  L413           NwaCegarLoop]: 18142 mSDtfsCounter, 69645 mSDsluCounter, 71977 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69645 SdHoareTripleChecker+Valid, 90119 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:20,822 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69645 Valid, 90119 Invalid, 1381 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-11-29 03:54:20,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21415 states.
[2023-11-29 03:54:21,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21415 to 11074.
[2023-11-29 03:54:21,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11074 states, 11073 states have (on average 1.6655829495168428) internal successors, (18443), 11073 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states 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 03:54:21,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 18443 transitions.
[2023-11-29 03:54:21,141 INFO  L78                 Accepts]: Start accepts. Automaton has 11074 states and 18443 transitions. Word has length 490
[2023-11-29 03:54:21,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:21,143 INFO  L495      AbstractCegarLoop]: Abstraction has 11074 states and 18443 transitions.
[2023-11-29 03:54:21,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 03:54:21,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 11074 states and 18443 transitions.
[2023-11-29 03:54:21,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-11-29 03:54:21,154 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:21,155 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]
[2023-11-29 03:54:21,155 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 03:54:21,155 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:21,156 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:21,156 INFO  L85        PathProgramCache]: Analyzing trace with hash -245322124, now seen corresponding path program 1 times
[2023-11-29 03:54:21,156 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:21,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733992565]
[2023-11-29 03:54:21,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:21,157 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:21,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:22,372 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 03:54:22,372 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:22,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733992565]
[2023-11-29 03:54:22,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733992565] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:22,373 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:22,373 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:54:22,373 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520355715]
[2023-11-29 03:54:22,373 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:22,374 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:54:22,375 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:22,376 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:54:22,376 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:54:22,376 INFO  L87              Difference]: Start difference. First operand 11074 states and 18443 transitions. Second operand  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 03:54:22,789 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:22,790 INFO  L93              Difference]: Finished difference Result 21427 states and 35689 transitions.
[2023-11-29 03:54:22,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:54:22,791 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 491
[2023-11-29 03:54:22,792 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:22,814 INFO  L225             Difference]: With dead ends: 21427
[2023-11-29 03:54:22,814 INFO  L226             Difference]: Without dead ends: 11066
[2023-11-29 03:54:22,826 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:54:22,827 INFO  L413           NwaCegarLoop]: 18359 mSDtfsCounter, 34874 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34874 SdHoareTripleChecker+Valid, 19539 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:22,828 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34874 Valid, 19539 Invalid, 55 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 03:54:22,848 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11066 states.
[2023-11-29 03:54:23,020 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11066 to 11066.
[2023-11-29 03:54:23,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11066 states, 11065 states have (on average 1.6656122910076818) internal successors, (18430), 11065 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states 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 03:54:23,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 18430 transitions.
[2023-11-29 03:54:23,061 INFO  L78                 Accepts]: Start accepts. Automaton has 11066 states and 18430 transitions. Word has length 491
[2023-11-29 03:54:23,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:23,062 INFO  L495      AbstractCegarLoop]: Abstraction has 11066 states and 18430 transitions.
[2023-11-29 03:54:23,062 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 03:54:23,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 11066 states and 18430 transitions.
[2023-11-29 03:54:23,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7366
[2023-11-29 03:54:23,680 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:23,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:54:23,685 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 03:54:23,685 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:23,686 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:23,689 INFO  L85        PathProgramCache]: Analyzing trace with hash 1637051711, now seen corresponding path program 1 times
[2023-11-29 03:54:23,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:23,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554777357]
[2023-11-29 03:54:23,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:23,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:25,042 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:54:25,042 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279875902]
[2023-11-29 03:54:25,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:25,045 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:54:25,045 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:54:25,048 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:54:25,052 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 03:54:34,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:34,824 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36900 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 03:54:35,168 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:54:35,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:54:35,378 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:54:35,379 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:35,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554777357]
[2023-11-29 03:54:35,379 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:54:35,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279875902]
[2023-11-29 03:54:35,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279875902] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:35,379 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:35,382 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:54:35,382 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113399071]
[2023-11-29 03:54:35,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:35,389 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:54:35,389 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:35,395 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:54:35,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:54:35,397 INFO  L87              Difference]: Start difference. First operand 11066 states and 18430 transitions. Second operand  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 03:54:35,570 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:35,570 INFO  L93              Difference]: Finished difference Result 21421 states and 35680 transitions.
[2023-11-29 03:54:35,571 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:54:35,573 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 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 7365
[2023-11-29 03:54:35,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:35,588 INFO  L225             Difference]: With dead ends: 21421
[2023-11-29 03:54:35,588 INFO  L226             Difference]: Without dead ends: 11071
[2023-11-29 03:54:35,597 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7364 GetRequests, 7363 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:54:35,598 INFO  L413           NwaCegarLoop]: 18115 mSDtfsCounter, 6 mSDsluCounter, 18110 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:35,598 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 03:54:35,613 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11071 states.
[2023-11-29 03:54:35,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 11067.
[2023-11-29 03:54:35,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6655521416952828) internal successors, (18431), 11066 states have internal predecessors, (18431), 0 states have call successors, (0), 0 states 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 03:54:35,727 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18431 transitions.
[2023-11-29 03:54:35,727 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18431 transitions. Word has length 7365
[2023-11-29 03:54:35,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:35,730 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18431 transitions.
[2023-11-29 03:54:35,732 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 03:54:35,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18431 transitions.
[2023-11-29 03:54:36,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7366
[2023-11-29 03:54:36,070 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:36,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:54:36,193 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-11-29 03:54:36,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:54:36,276 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:36,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:36,279 INFO  L85        PathProgramCache]: Analyzing trace with hash 174864781, now seen corresponding path program 1 times
[2023-11-29 03:54:36,279 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:36,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674756072]
[2023-11-29 03:54:36,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:36,280 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:36,987 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:54:36,987 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181670765]
[2023-11-29 03:54:36,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:36,989 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:54:36,989 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:54:36,989 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:54:36,990 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 03:54:45,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:54:46,161 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36901 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:54:46,326 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:54:49,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:54:49,067 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:54:49,067 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:54:49,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674756072]
[2023-11-29 03:54:49,067 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:54:49,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181670765]
[2023-11-29 03:54:49,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181670765] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:54:49,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:54:49,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:54:49,070 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91164824]
[2023-11-29 03:54:49,070 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:54:49,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:54:49,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:54:49,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:54:49,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:54:49,086 INFO  L87              Difference]: Start difference. First operand 11067 states and 18431 transitions. Second operand  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 03:54:55,034 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:54:55,034 INFO  L93              Difference]: Finished difference Result 21998 states and 36638 transitions.
[2023-11-29 03:54:55,034 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:54:55,036 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 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 7365
[2023-11-29 03:54:55,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:54:55,053 INFO  L225             Difference]: With dead ends: 21998
[2023-11-29 03:54:55,053 INFO  L226             Difference]: Without dead ends: 11647
[2023-11-29 03:54:55,058 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7365 GetRequests, 7362 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 03:54:55,059 INFO  L413           NwaCegarLoop]: 14034 mSDtfsCounter, 34481 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 6040 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34481 SdHoareTripleChecker+Valid, 15493 SdHoareTripleChecker+Invalid, 6040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-11-29 03:54:55,059 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34481 Valid, 15493 Invalid, 6040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6040 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-11-29 03:54:55,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11647 states.
[2023-11-29 03:54:55,187 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11067.
[2023-11-29 03:54:55,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6654617748057112) internal successors, (18430), 11066 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states 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 03:54:55,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18430 transitions.
[2023-11-29 03:54:55,219 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18430 transitions. Word has length 7365
[2023-11-29 03:54:55,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:54:55,221 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18430 transitions.
[2023-11-29 03:54:55,223 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 03:54:55,223 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18430 transitions.
[2023-11-29 03:54:55,472 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7367
[2023-11-29 03:54:55,472 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:54:55,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:54:55,569 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 03:54:55,676 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:54:55,677 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:54:55,677 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:54:55,680 INFO  L85        PathProgramCache]: Analyzing trace with hash 1691660989, now seen corresponding path program 1 times
[2023-11-29 03:54:55,680 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:54:55,680 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823193746]
[2023-11-29 03:54:55,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:55,681 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:54:56,457 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:54:56,458 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815348884]
[2023-11-29 03:54:56,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:54:56,460 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:54:56,460 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:54:56,462 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:54:56,464 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 03:55:05,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:55:05,518 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36902 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:55:05,616 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:55:08,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:55:08,028 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:55:08,029 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:55:08,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823193746]
[2023-11-29 03:55:08,029 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:55:08,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815348884]
[2023-11-29 03:55:08,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [815348884] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:55:08,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:55:08,031 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:55:08,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356847850]
[2023-11-29 03:55:08,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:55:08,036 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:55:08,036 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:55:08,042 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:55:08,042 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:55:08,045 INFO  L87              Difference]: Start difference. First operand 11067 states and 18430 transitions. Second operand  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states 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 03:55:13,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:55:13,637 INFO  L93              Difference]: Finished difference Result 22011 states and 36657 transitions.
[2023-11-29 03:55:13,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:55:13,639 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 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 7366
[2023-11-29 03:55:13,640 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:55:13,652 INFO  L225             Difference]: With dead ends: 22011
[2023-11-29 03:55:13,652 INFO  L226             Difference]: Without dead ends: 11660
[2023-11-29 03:55:13,658 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7366 GetRequests, 7363 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 03:55:13,658 INFO  L413           NwaCegarLoop]: 14053 mSDtfsCounter, 34470 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 6042 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34470 SdHoareTripleChecker+Valid, 15532 SdHoareTripleChecker+Invalid, 6042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-11-29 03:55:13,659 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34470 Valid, 15532 Invalid, 6042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6042 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-11-29 03:55:13,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11660 states.
[2023-11-29 03:55:13,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11660 to 11067.
[2023-11-29 03:55:13,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6653714079161395) internal successors, (18429), 11066 states have internal predecessors, (18429), 0 states have call successors, (0), 0 states 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 03:55:13,777 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18429 transitions.
[2023-11-29 03:55:13,777 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18429 transitions. Word has length 7366
[2023-11-29 03:55:13,779 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:55:13,779 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18429 transitions.
[2023-11-29 03:55:13,780 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states 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 03:55:13,781 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18429 transitions.
[2023-11-29 03:55:14,073 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-11-29 03:55:14,073 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:55:14,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:55:14,171 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 03:55:14,277 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 03:55:14,277 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:55:14,279 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:55:14,281 INFO  L85        PathProgramCache]: Analyzing trace with hash -684961840, now seen corresponding path program 1 times
[2023-11-29 03:55:14,281 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:55:14,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027896817]
[2023-11-29 03:55:14,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:14,282 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:55:14,999 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:55:14,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663204147]
[2023-11-29 03:55:15,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:15,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:55:15,001 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:55:15,002 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:55:15,004 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 03:55:23,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:55:24,208 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36903 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:55:24,303 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:55:26,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:55:26,526 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:55:26,526 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:55:26,526 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027896817]
[2023-11-29 03:55:26,527 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:55:26,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663204147]
[2023-11-29 03:55:26,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663204147] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:55:26,527 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:55:26,529 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:55:26,529 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914411118]
[2023-11-29 03:55:26,529 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:55:26,535 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:55:26,535 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:55:26,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:55:26,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:55:26,543 INFO  L87              Difference]: Start difference. First operand 11067 states and 18429 transitions. Second operand  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states 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 03:55:32,248 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:55:32,248 INFO  L93              Difference]: Finished difference Result 22027 states and 36681 transitions.
[2023-11-29 03:55:32,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:55:32,249 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 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 7367
[2023-11-29 03:55:32,250 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:55:32,264 INFO  L225             Difference]: With dead ends: 22027
[2023-11-29 03:55:32,264 INFO  L226             Difference]: Without dead ends: 11676
[2023-11-29 03:55:32,268 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7367 GetRequests, 7364 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 03:55:32,269 INFO  L413           NwaCegarLoop]: 14077 mSDtfsCounter, 34457 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6044 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34457 SdHoareTripleChecker+Valid, 15581 SdHoareTripleChecker+Invalid, 6044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 03:55:32,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34457 Valid, 15581 Invalid, 6044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6044 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 03:55:32,285 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11676 states.
[2023-11-29 03:55:32,358 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11067.
[2023-11-29 03:55:32,368 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.665281041026568) internal successors, (18428), 11066 states have internal predecessors, (18428), 0 states have call successors, (0), 0 states 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 03:55:32,380 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18428 transitions.
[2023-11-29 03:55:32,380 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18428 transitions. Word has length 7367
[2023-11-29 03:55:32,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:55:32,382 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18428 transitions.
[2023-11-29 03:55:32,383 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states 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 03:55:32,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18428 transitions.
[2023-11-29 03:55:32,653 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7369
[2023-11-29 03:55:32,653 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:55:32,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:55:32,750 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 03:55:32,857 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:55:32,857 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:55:32,858 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:55:32,860 INFO  L85        PathProgramCache]: Analyzing trace with hash -1328747974, now seen corresponding path program 1 times
[2023-11-29 03:55:32,860 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:55:32,860 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079020245]
[2023-11-29 03:55:32,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:32,861 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:55:33,516 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:55:33,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337793004]
[2023-11-29 03:55:33,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:33,518 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:55:33,518 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:55:33,518 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:55:33,519 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 03:55:42,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:55:42,269 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36904 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:55:42,446 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:55:45,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:55:45,028 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:55:45,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:55:45,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079020245]
[2023-11-29 03:55:45,028 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:55:45,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337793004]
[2023-11-29 03:55:45,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337793004] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:55:45,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:55:45,031 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:55:45,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27265812]
[2023-11-29 03:55:45,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:55:45,037 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:55:45,037 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:55:45,043 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:55:45,043 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:55:45,045 INFO  L87              Difference]: Start difference. First operand 11067 states and 18428 transitions. Second operand  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states 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 03:55:50,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:55:50,701 INFO  L93              Difference]: Finished difference Result 22034 states and 36690 transitions.
[2023-11-29 03:55:50,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:55:50,703 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 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 7368
[2023-11-29 03:55:50,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:55:50,713 INFO  L225             Difference]: With dead ends: 22034
[2023-11-29 03:55:50,713 INFO  L226             Difference]: Without dead ends: 11683
[2023-11-29 03:55:50,719 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7368 GetRequests, 7365 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 03:55:50,719 INFO  L413           NwaCegarLoop]: 14086 mSDtfsCounter, 34450 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34450 SdHoareTripleChecker+Valid, 15600 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 03:55:50,719 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34450 Valid, 15600 Invalid, 6046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 03:55:50,732 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11683 states.
[2023-11-29 03:55:50,810 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 11067.
[2023-11-29 03:55:50,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6651906741369962) internal successors, (18427), 11066 states have internal predecessors, (18427), 0 states have call successors, (0), 0 states 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 03:55:50,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18427 transitions.
[2023-11-29 03:55:50,832 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18427 transitions. Word has length 7368
[2023-11-29 03:55:50,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:55:50,834 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18427 transitions.
[2023-11-29 03:55:50,835 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states 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 03:55:50,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18427 transitions.
[2023-11-29 03:55:51,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7370
[2023-11-29 03:55:51,115 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:55:51,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:55:51,212 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-29 03:55:51,319 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:55:51,319 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:55:51,321 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:55:51,323 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606246111, now seen corresponding path program 1 times
[2023-11-29 03:55:51,323 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:55:51,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632799339]
[2023-11-29 03:55:51,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:51,324 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:55:51,971 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:55:51,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590536800]
[2023-11-29 03:55:51,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:55:51,973 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:55:51,973 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:55:51,974 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:55:51,975 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 03:56:00,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:56:01,196 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36905 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:56:01,290 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:56:03,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:56:03,548 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:56:03,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:56:03,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632799339]
[2023-11-29 03:56:03,548 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:56:03,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590536800]
[2023-11-29 03:56:03,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590536800] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:56:03,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:56:03,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:56:03,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312246693]
[2023-11-29 03:56:03,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:56:03,557 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:56:03,557 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:56:03,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:56:03,562 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:56:03,564 INFO  L87              Difference]: Start difference. First operand 11067 states and 18427 transitions. Second operand  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states 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 03:56:09,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:56:09,223 INFO  L93              Difference]: Finished difference Result 22038 states and 36694 transitions.
[2023-11-29 03:56:09,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:56:09,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 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 7369
[2023-11-29 03:56:09,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:56:09,236 INFO  L225             Difference]: With dead ends: 22038
[2023-11-29 03:56:09,236 INFO  L226             Difference]: Without dead ends: 11687
[2023-11-29 03:56:09,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7369 GetRequests, 7366 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 03:56:09,244 INFO  L413           NwaCegarLoop]: 14090 mSDtfsCounter, 34445 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34445 SdHoareTripleChecker+Valid, 15609 SdHoareTripleChecker+Invalid, 6048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 03:56:09,244 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34445 Valid, 15609 Invalid, 6048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6048 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 03:56:09,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11687 states.
[2023-11-29 03:56:09,349 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11687 to 11067.
[2023-11-29 03:56:09,358 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6651003072474246) internal successors, (18426), 11066 states have internal predecessors, (18426), 0 states have call successors, (0), 0 states 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 03:56:09,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18426 transitions.
[2023-11-29 03:56:09,370 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18426 transitions. Word has length 7369
[2023-11-29 03:56:09,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:56:09,372 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18426 transitions.
[2023-11-29 03:56:09,373 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states 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 03:56:09,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18426 transitions.
[2023-11-29 03:56:09,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7371
[2023-11-29 03:56:09,621 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:56:09,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:56:09,720 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 03:56:09,824 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:56:09,824 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:56:09,825 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:56:09,828 INFO  L85        PathProgramCache]: Analyzing trace with hash -22391729, now seen corresponding path program 1 times
[2023-11-29 03:56:09,828 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:56:09,828 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355455546]
[2023-11-29 03:56:09,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:09,830 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:56:10,485 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:56:10,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793439963]
[2023-11-29 03:56:10,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:10,487 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:56:10,487 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:56:10,488 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:56:10,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 03:56:19,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:56:19,542 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36906 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:56:19,639 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:56:21,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:56:21,933 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:56:21,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:56:21,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355455546]
[2023-11-29 03:56:21,934 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:56:21,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793439963]
[2023-11-29 03:56:21,934 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793439963] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:56:21,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:56:21,936 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:56:21,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104295260]
[2023-11-29 03:56:21,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:56:21,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:56:21,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:56:21,947 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:56:21,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:56:21,949 INFO  L87              Difference]: Start difference. First operand 11067 states and 18426 transitions. Second operand  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states 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 03:56:27,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:56:27,594 INFO  L93              Difference]: Finished difference Result 22063 states and 36733 transitions.
[2023-11-29 03:56:27,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:56:27,596 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 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 7370
[2023-11-29 03:56:27,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:56:27,605 INFO  L225             Difference]: With dead ends: 22063
[2023-11-29 03:56:27,605 INFO  L226             Difference]: Without dead ends: 11712
[2023-11-29 03:56:27,611 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7370 GetRequests, 7367 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 03:56:27,611 INFO  L413           NwaCegarLoop]: 14129 mSDtfsCounter, 34426 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 6050 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34426 SdHoareTripleChecker+Valid, 15688 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 03:56:27,612 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34426 Valid, 15688 Invalid, 6050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6050 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 03:56:27,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11712 states.
[2023-11-29 03:56:27,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11067.
[2023-11-29 03:56:27,711 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6650099403578529) internal successors, (18425), 11066 states have internal predecessors, (18425), 0 states have call successors, (0), 0 states 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 03:56:27,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18425 transitions.
[2023-11-29 03:56:27,724 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18425 transitions. Word has length 7370
[2023-11-29 03:56:27,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:56:27,726 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18425 transitions.
[2023-11-29 03:56:27,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states 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 03:56:27,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18425 transitions.
[2023-11-29 03:56:27,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7372
[2023-11-29 03:56:27,999 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:56:28,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:56:28,097 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 03:56:28,202 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 03:56:28,203 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:56:28,204 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:56:28,208 INFO  L85        PathProgramCache]: Analyzing trace with hash -1953823606, now seen corresponding path program 1 times
[2023-11-29 03:56:28,208 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:56:28,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889537974]
[2023-11-29 03:56:28,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:28,209 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:56:28,855 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:56:28,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325305974]
[2023-11-29 03:56:28,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:28,857 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:56:28,857 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:56:28,858 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:56:28,860 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 03:56:37,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:56:37,831 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36907 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:56:37,927 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:56:40,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:56:40,385 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:56:40,385 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:56:40,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889537974]
[2023-11-29 03:56:40,385 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:56:40,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325305974]
[2023-11-29 03:56:40,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325305974] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:56:40,385 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:56:40,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:56:40,388 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54056574]
[2023-11-29 03:56:40,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:56:40,395 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:56:40,395 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:56:40,400 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:56:40,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:56:40,402 INFO  L87              Difference]: Start difference. First operand 11067 states and 18425 transitions. Second operand  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states 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 03:56:46,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:56:46,086 INFO  L93              Difference]: Finished difference Result 22082 states and 36762 transitions.
[2023-11-29 03:56:46,086 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:56:46,087 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 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 7371
[2023-11-29 03:56:46,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:56:46,096 INFO  L225             Difference]: With dead ends: 22082
[2023-11-29 03:56:46,096 INFO  L226             Difference]: Without dead ends: 11731
[2023-11-29 03:56:46,098 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7371 GetRequests, 7368 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 03:56:46,099 INFO  L413           NwaCegarLoop]: 14158 mSDtfsCounter, 34411 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34411 SdHoareTripleChecker+Valid, 15747 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 03:56:46,099 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34411 Valid, 15747 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6052 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 03:56:46,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11731 states.
[2023-11-29 03:56:46,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11731 to 11067.
[2023-11-29 03:56:46,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6649195734682811) internal successors, (18424), 11066 states have internal predecessors, (18424), 0 states have call successors, (0), 0 states 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 03:56:46,203 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18424 transitions.
[2023-11-29 03:56:46,203 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18424 transitions. Word has length 7371
[2023-11-29 03:56:46,204 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:56:46,204 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18424 transitions.
[2023-11-29 03:56:46,205 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states 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 03:56:46,205 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18424 transitions.
[2023-11-29 03:56:46,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7373
[2023-11-29 03:56:46,421 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:56:46,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:56:46,518 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 03:56:46,624 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:56:46,624 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:56:46,624 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:56:46,627 INFO  L85        PathProgramCache]: Analyzing trace with hash 2101407014, now seen corresponding path program 1 times
[2023-11-29 03:56:46,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:56:46,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640645561]
[2023-11-29 03:56:46,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:46,628 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:56:47,369 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:56:47,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027505253]
[2023-11-29 03:56:47,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:56:47,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:56:47,371 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:56:47,371 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:56:47,373 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 03:56:56,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:56:56,380 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36908 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:56:56,467 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:56:58,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:56:58,642 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:56:58,642 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:56:58,643 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640645561]
[2023-11-29 03:56:58,643 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:56:58,643 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027505253]
[2023-11-29 03:56:58,643 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027505253] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:56:58,643 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:56:58,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 03:56:58,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570315145]
[2023-11-29 03:56:58,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:56:58,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:56:58,649 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:56:58,653 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:56:58,653 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 03:56:58,655 INFO  L87              Difference]: Start difference. First operand 11067 states and 18424 transitions. Second operand  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states 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 03:57:04,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:57:04,448 INFO  L93              Difference]: Finished difference Result 22095 states and 36781 transitions.
[2023-11-29 03:57:04,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:57:04,450 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 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 7372
[2023-11-29 03:57:04,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:57:04,458 INFO  L225             Difference]: With dead ends: 22095
[2023-11-29 03:57:04,458 INFO  L226             Difference]: Without dead ends: 11744
[2023-11-29 03:57:04,462 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7372 GetRequests, 7369 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 03:57:04,463 INFO  L413           NwaCegarLoop]: 14177 mSDtfsCounter, 34400 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 6054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34400 SdHoareTripleChecker+Valid, 15786 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 03:57:04,463 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34400 Valid, 15786 Invalid, 6054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6054 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 03:57:04,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11744 states.
[2023-11-29 03:57:04,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 11067.
[2023-11-29 03:57:04,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6648292065787096) internal successors, (18423), 11066 states have internal predecessors, (18423), 0 states have call successors, (0), 0 states 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 03:57:04,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18423 transitions.
[2023-11-29 03:57:04,576 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18423 transitions. Word has length 7372
[2023-11-29 03:57:04,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:57:04,577 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18423 transitions.
[2023-11-29 03:57:04,578 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states 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 03:57:04,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18423 transitions.
[2023-11-29 03:57:04,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7374
[2023-11-29 03:57:04,798 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:57:04,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:57:04,894 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 03:57:05,000 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 03:57:05,002 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:57:05,003 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:57:05,009 INFO  L85        PathProgramCache]: Analyzing trace with hash 987452365, now seen corresponding path program 1 times
[2023-11-29 03:57:05,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:57:05,010 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314690787]
[2023-11-29 03:57:05,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:57:05,015 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:57:05,778 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:57:05,778 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887195175]
[2023-11-29 03:57:05,780 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:57:05,780 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:57:05,780 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:57:05,781 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:57:05,781 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 03:57:14,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:57:15,200 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36909 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 03:57:15,285 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:57:54,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:57:54,252 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:57:54,252 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:57:54,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314690787]
[2023-11-29 03:57:54,252 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:57:54,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887195175]
[2023-11-29 03:57:54,252 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [887195175] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:57:54,253 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:57:54,255 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 03:57:54,255 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235328297]
[2023-11-29 03:57:54,255 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:57:54,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 03:57:54,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:57:54,268 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 03:57:54,268 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 03:57:54,271 INFO  L87              Difference]: Start difference. First operand 11067 states and 18423 transitions. Second operand  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states 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 03:58:08,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:58:08,470 INFO  L93              Difference]: Finished difference Result 31581 states and 52581 transitions.
[2023-11-29 03:58:08,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:58:08,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 states have internal predecessors, (7373), 0 states have call successors, (0), 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 7373
[2023-11-29 03:58:08,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:58:08,491 INFO  L225             Difference]: With dead ends: 31581
[2023-11-29 03:58:08,491 INFO  L226             Difference]: Without dead ends: 21230
[2023-11-29 03:58:08,498 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7374 GetRequests, 7369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-29 03:58:08,499 INFO  L413           NwaCegarLoop]: 13720 mSDtfsCounter, 10170 mSDsluCounter, 40208 mSDsCounter, 0 mSdLazyCounter, 18524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10170 SdHoareTripleChecker+Valid, 53928 SdHoareTripleChecker+Invalid, 18524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time
[2023-11-29 03:58:08,499 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10170 Valid, 53928 Invalid, 18524 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 18524 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time]
[2023-11-29 03:58:08,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21230 states.
[2023-11-29 03:58:08,698 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 21220.
[2023-11-29 03:58:08,715 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21220 states, 21219 states have (on average 1.6650643291389793) internal successors, (35331), 21219 states have internal predecessors, (35331), 0 states have call successors, (0), 0 states 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 03:58:08,737 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21220 states to 21220 states and 35331 transitions.
[2023-11-29 03:58:08,737 INFO  L78                 Accepts]: Start accepts. Automaton has 21220 states and 35331 transitions. Word has length 7373
[2023-11-29 03:58:08,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:58:08,740 INFO  L495      AbstractCegarLoop]: Abstraction has 21220 states and 35331 transitions.
[2023-11-29 03:58:08,741 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states 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 03:58:08,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 21220 states and 35331 transitions.
[2023-11-29 03:58:08,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7375
[2023-11-29 03:58:08,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:58:08,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:58:09,059 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 03:58:09,158 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 03:58:09,158 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:58:09,159 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:58:09,160 INFO  L85        PathProgramCache]: Analyzing trace with hash 82307911, now seen corresponding path program 1 times
[2023-11-29 03:58:09,160 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:58:09,160 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945028639]
[2023-11-29 03:58:09,161 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:58:09,161 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:58:09,929 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:58:09,929 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325317781]
[2023-11-29 03:58:09,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:58:09,931 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:58:09,931 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:58:09,932 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:58:09,933 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 03:58:18,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:58:18,693 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36912 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 03:58:18,783 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:58:19,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 4 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:58:19,635 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 03:58:19,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked.
[2023-11-29 03:58:19,751 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:58:19,751 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945028639]
[2023-11-29 03:58:19,751 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:58:19,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325317781]
[2023-11-29 03:58:19,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325317781] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 03:58:19,752 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 03:58:19,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10
[2023-11-29 03:58:19,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788232592]
[2023-11-29 03:58:19,756 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:58:19,759 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 03:58:19,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:58:19,763 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 03:58:19,763 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:58:19,765 INFO  L87              Difference]: Start difference. First operand 21220 states and 35331 transitions. Second operand  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states 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 03:58:20,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:58:20,169 INFO  L93              Difference]: Finished difference Result 41910 states and 69781 transitions.
[2023-11-29 03:58:20,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 03:58:20,172 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 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 7374
[2023-11-29 03:58:20,176 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:58:20,192 INFO  L225             Difference]: With dead ends: 41910
[2023-11-29 03:58:20,192 INFO  L226             Difference]: Without dead ends: 21406
[2023-11-29 03:58:20,202 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 14746 GetRequests, 14738 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:58:20,203 INFO  L413           NwaCegarLoop]: 35316 mSDtfsCounter, 17209 mSDsluCounter, 53409 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17209 SdHoareTripleChecker+Valid, 88725 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 03:58:20,203 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17209 Valid, 88725 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 03:58:20,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21406 states.
[2023-11-29 03:58:20,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21406 to 21212.
[2023-11-29 03:58:20,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21212 states, 21211 states have (on average 1.6650794399132525) internal successors, (35318), 21211 states have internal predecessors, (35318), 0 states have call successors, (0), 0 states 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 03:58:20,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21212 states to 21212 states and 35318 transitions.
[2023-11-29 03:58:20,411 INFO  L78                 Accepts]: Start accepts. Automaton has 21212 states and 35318 transitions. Word has length 7374
[2023-11-29 03:58:20,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:58:20,414 INFO  L495      AbstractCegarLoop]: Abstraction has 21212 states and 35318 transitions.
[2023-11-29 03:58:20,416 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states 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 03:58:20,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 21212 states and 35318 transitions.
[2023-11-29 03:58:20,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7376
[2023-11-29 03:58:20,631 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:58:20,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:58:20,726 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 03:58:20,833 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 03:58:20,834 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:58:20,834 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:58:20,835 INFO  L85        PathProgramCache]: Analyzing trace with hash -143512391, now seen corresponding path program 1 times
[2023-11-29 03:58:20,835 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:58:20,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877669516]
[2023-11-29 03:58:20,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:58:20,836 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:58:21,558 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:58:21,559 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786840691]
[2023-11-29 03:58:21,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:58:21,560 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:58:21,560 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:58:21,561 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:58:21,562 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 03:58:31,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:58:31,246 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36915 conjuncts, 29 conjunts are in the unsatisfiable core
[2023-11-29 03:58:31,347 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:59:01,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:59:01,391 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:59:01,391 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:59:01,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877669516]
[2023-11-29 03:59:01,391 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:59:01,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786840691]
[2023-11-29 03:59:01,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786840691] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:59:01,391 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:59:01,393 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 03:59:01,393 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515118722]
[2023-11-29 03:59:01,393 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:59:01,397 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 03:59:01,397 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:59:01,401 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 03:59:01,401 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-29 03:59:01,403 INFO  L87              Difference]: Start difference. First operand 21212 states and 35318 transitions. Second operand  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states 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 03:59:14,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:59:14,031 INFO  L93              Difference]: Finished difference Result 51983 states and 86536 transitions.
[2023-11-29 03:59:14,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 03:59:14,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 states have internal predecessors, (7375), 0 states have call successors, (0), 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 7375
[2023-11-29 03:59:14,036 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:59:14,066 INFO  L225             Difference]: With dead ends: 51983
[2023-11-29 03:59:14,066 INFO  L226             Difference]: Without dead ends: 31487
[2023-11-29 03:59:14,080 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7377 GetRequests, 7369 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-11-29 03:59:14,081 INFO  L413           NwaCegarLoop]: 13620 mSDtfsCounter, 69156 mSDsluCounter, 44595 mSDsCounter, 0 mSdLazyCounter, 14704 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69156 SdHoareTripleChecker+Valid, 58215 SdHoareTripleChecker+Invalid, 14763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 14704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-11-29 03:59:14,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69156 Valid, 58215 Invalid, 14763 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [59 Valid, 14704 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-11-29 03:59:14,107 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31487 states.
[2023-11-29 03:59:14,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31487 to 27037.
[2023-11-29 03:59:14,390 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27037 states, 27036 states have (on average 1.6649282438230508) internal successors, (45013), 27036 states have internal predecessors, (45013), 0 states have call successors, (0), 0 states 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 03:59:14,431 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27037 states to 27037 states and 45013 transitions.
[2023-11-29 03:59:14,431 INFO  L78                 Accepts]: Start accepts. Automaton has 27037 states and 45013 transitions. Word has length 7375
[2023-11-29 03:59:14,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:59:14,434 INFO  L495      AbstractCegarLoop]: Abstraction has 27037 states and 45013 transitions.
[2023-11-29 03:59:14,435 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states 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 03:59:14,436 INFO  L276                IsEmpty]: Start isEmpty. Operand 27037 states and 45013 transitions.
[2023-11-29 03:59:14,706 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7377
[2023-11-29 03:59:14,706 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:59:14,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:59:14,819 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 03:59:14,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 03:59:14,909 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:59:14,911 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:59:14,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 1778744179, now seen corresponding path program 1 times
[2023-11-29 03:59:14,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:59:14,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513765435]
[2023-11-29 03:59:14,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:59:14,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:59:15,590 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:59:15,590 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078677548]
[2023-11-29 03:59:15,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:59:15,592 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:59:15,592 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:59:15,593 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:59:15,593 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 03:59:24,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:59:24,619 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36918 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-29 03:59:24,701 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 03:59:32,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:59:32,407 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 03:59:32,407 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:59:32,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513765435]
[2023-11-29 03:59:32,407 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 03:59:32,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078677548]
[2023-11-29 03:59:32,407 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078677548] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:59:32,407 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:59:32,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 03:59:32,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437843517]
[2023-11-29 03:59:32,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:59:32,413 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 03:59:32,413 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:59:32,417 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 03:59:32,417 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 03:59:32,419 INFO  L87              Difference]: Start difference. First operand 27037 states and 45013 transitions. Second operand  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states 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 03:59:46,364 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:59:46,364 INFO  L93              Difference]: Finished difference Result 59866 states and 99694 transitions.
[2023-11-29 03:59:46,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 03:59:46,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 states have internal predecessors, (7376), 0 states have call successors, (0), 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 7376
[2023-11-29 03:59:46,368 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:59:46,392 INFO  L225             Difference]: With dead ends: 59866
[2023-11-29 03:59:46,392 INFO  L226             Difference]: Without dead ends: 38141
[2023-11-29 03:59:46,403 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7377 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 03:59:46,404 INFO  L413           NwaCegarLoop]: 19248 mSDtfsCounter, 24725 mSDsluCounter, 51711 mSDsCounter, 0 mSdLazyCounter, 23102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24725 SdHoareTripleChecker+Valid, 70959 SdHoareTripleChecker+Invalid, 23104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time
[2023-11-29 03:59:46,404 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24725 Valid, 70959 Invalid, 23104 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 23102 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time]
[2023-11-29 03:59:46,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38141 states.
[2023-11-29 03:59:46,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38141 to 29495.
[2023-11-29 03:59:46,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29495 states, 29494 states have (on average 1.6649488031464026) internal successors, (49106), 29494 states have internal predecessors, (49106), 0 states have call successors, (0), 0 states 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 03:59:46,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29495 states to 29495 states and 49106 transitions.
[2023-11-29 03:59:46,705 INFO  L78                 Accepts]: Start accepts. Automaton has 29495 states and 49106 transitions. Word has length 7376
[2023-11-29 03:59:46,707 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:59:46,707 INFO  L495      AbstractCegarLoop]: Abstraction has 29495 states and 49106 transitions.
[2023-11-29 03:59:46,708 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states 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 03:59:46,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 29495 states and 49106 transitions.
[2023-11-29 03:59:46,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-11-29 03:59:46,923 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:59:46,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:59:47,017 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 03:59:47,125 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:59:47,126 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:59:47,126 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:59:47,127 INFO  L85        PathProgramCache]: Analyzing trace with hash 1330081821, now seen corresponding path program 1 times
[2023-11-29 03:59:47,127 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:59:47,127 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959100959]
[2023-11-29 03:59:47,128 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:59:47,128 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:59:47,927 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 03:59:47,927 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61643073]
[2023-11-29 03:59:47,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:59:47,928 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 03:59:47,928 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:59:47,929 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 03:59:47,930 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 03:59:56,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:59:56,965 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36921 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 03:59:57,043 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:00:07,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:00:07,219 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:00:07,220 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:00:07,220 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959100959]
[2023-11-29 04:00:07,220 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:00:07,220 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61643073]
[2023-11-29 04:00:07,220 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [61643073] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:00:07,220 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:00:07,222 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:00:07,222 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594863962]
[2023-11-29 04:00:07,223 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:00:07,227 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:00:07,227 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:00:07,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:00:07,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:00:07,233 INFO  L87              Difference]: Start difference. First operand 29495 states and 49106 transitions. Second operand  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:22,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:00:22,453 INFO  L93              Difference]: Finished difference Result 64784 states and 107885 transitions.
[2023-11-29 04:00:22,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 04:00:22,456 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 states have internal predecessors, (7377), 0 states have call successors, (0), 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 7377
[2023-11-29 04:00:22,461 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:00:22,498 INFO  L225             Difference]: With dead ends: 64784
[2023-11-29 04:00:22,499 INFO  L226             Difference]: Without dead ends: 41830
[2023-11-29 04:00:22,517 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 04:00:22,518 INFO  L413           NwaCegarLoop]: 18389 mSDtfsCounter, 22990 mSDsluCounter, 57446 mSDsCounter, 0 mSdLazyCounter, 23718 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22990 SdHoareTripleChecker+Valid, 75835 SdHoareTripleChecker+Invalid, 23722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:00:22,518 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22990 Valid, 75835 Invalid, 23722 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 23718 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time]
[2023-11-29 04:00:22,555 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41830 states.
[2023-11-29 04:00:22,867 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41830 to 33461.
[2023-11-29 04:00:22,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33461 states, 33460 states have (on average 1.6649133293484757) internal successors, (55708), 33460 states have internal predecessors, (55708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:22,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 55708 transitions.
[2023-11-29 04:00:22,927 INFO  L78                 Accepts]: Start accepts. Automaton has 33461 states and 55708 transitions. Word has length 7377
[2023-11-29 04:00:22,929 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:00:22,929 INFO  L495      AbstractCegarLoop]: Abstraction has 33461 states and 55708 transitions.
[2023-11-29 04:00:22,930 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:22,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 33461 states and 55708 transitions.
[2023-11-29 04:00:23,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-11-29 04:00:23,147 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:00:23,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:00:23,238 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 04:00:23,350 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:00:23,350 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:00:23,351 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:00:23,352 INFO  L85        PathProgramCache]: Analyzing trace with hash 653768607, now seen corresponding path program 1 times
[2023-11-29 04:00:23,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:00:23,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566336891]
[2023-11-29 04:00:23,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:00:23,354 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:00:23,979 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:00:23,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132716043]
[2023-11-29 04:00:23,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:00:23,981 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:00:23,981 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:00:23,982 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:00:23,983 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 04:00:32,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:00:33,156 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36922 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:00:33,236 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:00:41,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:00:41,776 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:00:41,776 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:00:41,777 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566336891]
[2023-11-29 04:00:41,777 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:00:41,777 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132716043]
[2023-11-29 04:00:41,777 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [132716043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:00:41,777 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:00:41,779 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:00:41,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057155097]
[2023-11-29 04:00:41,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:00:41,783 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:00:41,783 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:00:41,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:00:41,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:00:41,789 INFO  L87              Difference]: Start difference. First operand 33461 states and 55708 transitions. Second operand  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:55,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:00:55,661 INFO  L93              Difference]: Finished difference Result 69027 states and 114942 transitions.
[2023-11-29 04:00:55,661 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:00:55,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 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 7377
[2023-11-29 04:00:55,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:00:55,695 INFO  L225             Difference]: With dead ends: 69027
[2023-11-29 04:00:55,695 INFO  L226             Difference]: Without dead ends: 42107
[2023-11-29 04:00:55,711 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:00:55,712 INFO  L413           NwaCegarLoop]: 18390 mSDtfsCounter, 20941 mSDsluCounter, 49995 mSDsCounter, 0 mSdLazyCounter, 21914 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20941 SdHoareTripleChecker+Valid, 68385 SdHoareTripleChecker+Invalid, 21916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:00:55,712 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20941 Valid, 68385 Invalid, 21916 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 21914 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2023-11-29 04:00:55,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42107 states.
[2023-11-29 04:00:55,987 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42107 to 33461.
[2023-11-29 04:00:56,012 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33461 states, 33460 states have (on average 1.6649133293484757) internal successors, (55708), 33460 states have internal predecessors, (55708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:56,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 55708 transitions.
[2023-11-29 04:00:56,048 INFO  L78                 Accepts]: Start accepts. Automaton has 33461 states and 55708 transitions. Word has length 7377
[2023-11-29 04:00:56,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:00:56,050 INFO  L495      AbstractCegarLoop]: Abstraction has 33461 states and 55708 transitions.
[2023-11-29 04:00:56,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:00:56,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 33461 states and 55708 transitions.
[2023-11-29 04:00:56,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-11-29 04:00:56,339 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:00:56,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:00:56,430 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 04:00:56,541 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2023-11-29 04:00:56,541 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:00:56,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:00:56,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 1295989469, now seen corresponding path program 1 times
[2023-11-29 04:00:56,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:00:56,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818941527]
[2023-11-29 04:00:56,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:00:56,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:00:57,165 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:00:57,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084444023]
[2023-11-29 04:00:57,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:00:57,166 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:00:57,166 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:00:57,167 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:00:57,168 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 04:01:06,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:01:06,318 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36923 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:01:06,397 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:01:14,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:01:14,519 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:01:14,519 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:01:14,519 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818941527]
[2023-11-29 04:01:14,519 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:01:14,519 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084444023]
[2023-11-29 04:01:14,519 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084444023] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:01:14,519 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:01:14,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:01:14,522 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334992099]
[2023-11-29 04:01:14,522 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:01:14,527 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:01:14,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:01:14,533 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:01:14,534 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:01:14,536 INFO  L87              Difference]: Start difference. First operand 33461 states and 55708 transitions. Second operand  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:01:26,830 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:01:26,831 INFO  L93              Difference]: Finished difference Result 69027 states and 114942 transitions.
[2023-11-29 04:01:26,831 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:01:26,833 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 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 7377
[2023-11-29 04:01:26,836 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:01:26,865 INFO  L225             Difference]: With dead ends: 69027
[2023-11-29 04:01:26,865 INFO  L226             Difference]: Without dead ends: 42107
[2023-11-29 04:01:26,881 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:01:26,882 INFO  L413           NwaCegarLoop]: 13246 mSDtfsCounter, 20946 mSDsluCounter, 39718 mSDsCounter, 0 mSdLazyCounter, 19467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20946 SdHoareTripleChecker+Valid, 52964 SdHoareTripleChecker+Invalid, 19468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:01:26,882 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20946 Valid, 52964 Invalid, 19468 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19467 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time]
[2023-11-29 04:01:26,914 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42107 states.
[2023-11-29 04:01:27,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42107 to 34965.
[2023-11-29 04:01:27,240 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34965 states, 34964 states have (on average 1.6649124814094498) internal successors, (58212), 34964 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:01:27,276 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34965 states to 34965 states and 58212 transitions.
[2023-11-29 04:01:27,277 INFO  L78                 Accepts]: Start accepts. Automaton has 34965 states and 58212 transitions. Word has length 7377
[2023-11-29 04:01:27,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:01:27,279 INFO  L495      AbstractCegarLoop]: Abstraction has 34965 states and 58212 transitions.
[2023-11-29 04:01:27,280 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:01:27,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 34965 states and 58212 transitions.
[2023-11-29 04:01:27,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-11-29 04:01:27,497 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:01:27,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:01:27,585 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-11-29 04:01:27,698 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 04:01:27,699 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:01:27,699 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:01:27,700 INFO  L85        PathProgramCache]: Analyzing trace with hash 205014349, now seen corresponding path program 1 times
[2023-11-29 04:01:27,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:01:27,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802950263]
[2023-11-29 04:01:27,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:01:27,701 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:01:28,326 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:01:28,326 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978117686]
[2023-11-29 04:01:28,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:01:28,328 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:01:28,328 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:01:28,329 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:01:28,330 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 04:01:37,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:01:37,281 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36924 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:01:37,358 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:01:53,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:01:53,431 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:01:53,431 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:01:53,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802950263]
[2023-11-29 04:01:53,431 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:01:53,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978117686]
[2023-11-29 04:01:53,432 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [978117686] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:01:53,432 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:01:53,434 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:01:53,434 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857241972]
[2023-11-29 04:01:53,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:01:53,439 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:01:53,439 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:01:53,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:01:53,445 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:01:53,447 INFO  L87              Difference]: Start difference. First operand 34965 states and 58212 transitions. Second operand  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:09,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:02:09,863 INFO  L93              Difference]: Finished difference Result 72035 states and 119946 transitions.
[2023-11-29 04:02:09,863 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 04:02:09,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 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 7378
[2023-11-29 04:02:09,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:02:09,895 INFO  L225             Difference]: With dead ends: 72035
[2023-11-29 04:02:09,895 INFO  L226             Difference]: Without dead ends: 43611
[2023-11-29 04:02:09,910 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 04:02:09,910 INFO  L413           NwaCegarLoop]: 16786 mSDtfsCounter, 22111 mSDsluCounter, 63561 mSDsCounter, 0 mSdLazyCounter, 25237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22111 SdHoareTripleChecker+Valid, 80347 SdHoareTripleChecker+Invalid, 25239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:02:09,911 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22111 Valid, 80347 Invalid, 25239 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 25237 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time]
[2023-11-29 04:02:09,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43611 states.
[2023-11-29 04:02:10,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43611 to 39105.
[2023-11-29 04:02:10,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39105 states, 39104 states have (on average 1.6648936170212767) internal successors, (65104), 39104 states have internal predecessors, (65104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:10,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39105 states to 39105 states and 65104 transitions.
[2023-11-29 04:02:10,268 INFO  L78                 Accepts]: Start accepts. Automaton has 39105 states and 65104 transitions. Word has length 7378
[2023-11-29 04:02:10,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:02:10,271 INFO  L495      AbstractCegarLoop]: Abstraction has 39105 states and 65104 transitions.
[2023-11-29 04:02:10,272 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:10,272 INFO  L276                IsEmpty]: Start isEmpty. Operand 39105 states and 65104 transitions.
[2023-11-29 04:02:10,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-11-29 04:02:10,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:02:10,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:02:10,587 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-11-29 04:02:10,696 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 04:02:10,696 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:02:10,697 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:02:10,698 INFO  L85        PathProgramCache]: Analyzing trace with hash 714141195, now seen corresponding path program 1 times
[2023-11-29 04:02:10,698 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:02:10,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55118301]
[2023-11-29 04:02:10,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:02:10,699 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:02:11,416 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:02:11,416 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801527035]
[2023-11-29 04:02:11,417 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:02:11,417 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:02:11,418 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:02:11,418 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:02:11,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 04:02:20,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:02:20,273 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36925 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:02:20,358 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:02:32,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:02:32,626 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:02:32,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:02:32,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55118301]
[2023-11-29 04:02:32,627 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:02:32,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801527035]
[2023-11-29 04:02:32,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [801527035] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:02:32,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:02:32,629 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:02:32,629 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647861199]
[2023-11-29 04:02:32,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:02:32,633 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:02:32,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:02:32,637 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:02:32,637 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:02:32,639 INFO  L87              Difference]: Start difference. First operand 39105 states and 65104 transitions. Second operand  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:50,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:02:50,401 INFO  L93              Difference]: Finished difference Result 88571 states and 147488 transitions.
[2023-11-29 04:02:50,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:02:50,403 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 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 7378
[2023-11-29 04:02:50,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:02:50,447 INFO  L225             Difference]: With dead ends: 88571
[2023-11-29 04:02:50,447 INFO  L226             Difference]: Without dead ends: 56007
[2023-11-29 04:02:50,467 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:02:50,468 INFO  L413           NwaCegarLoop]: 21919 mSDtfsCounter, 28069 mSDsluCounter, 73820 mSDsCounter, 0 mSdLazyCounter, 27691 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28069 SdHoareTripleChecker+Valid, 95739 SdHoareTripleChecker+Invalid, 27695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:02:50,468 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28069 Valid, 95739 Invalid, 27695 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [4 Valid, 27691 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time]
[2023-11-29 04:02:50,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56007 states.
[2023-11-29 04:02:50,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56007 to 37599.
[2023-11-29 04:02:50,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37599 states, 37598 states have (on average 1.6649289855843397) internal successors, (62598), 37598 states have internal predecessors, (62598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:50,999 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37599 states to 37599 states and 62598 transitions.
[2023-11-29 04:02:50,999 INFO  L78                 Accepts]: Start accepts. Automaton has 37599 states and 62598 transitions. Word has length 7378
[2023-11-29 04:02:51,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:02:51,001 INFO  L495      AbstractCegarLoop]: Abstraction has 37599 states and 62598 transitions.
[2023-11-29 04:02:51,003 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:02:51,003 INFO  L276                IsEmpty]: Start isEmpty. Operand 37599 states and 62598 transitions.
[2023-11-29 04:02:51,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-11-29 04:02:51,220 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:02:51,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:02:51,309 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 04:02:51,422 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-11-29 04:02:51,422 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:02:51,423 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:02:51,424 INFO  L85        PathProgramCache]: Analyzing trace with hash -851848563, now seen corresponding path program 1 times
[2023-11-29 04:02:51,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:02:51,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370068914]
[2023-11-29 04:02:51,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:02:51,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:02:52,056 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:02:52,056 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862094924]
[2023-11-29 04:02:52,057 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:02:52,057 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:02:52,057 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:02:52,058 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:02:52,059 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 04:03:00,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:03:00,962 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36926 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:03:01,037 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:03:12,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:03:12,374 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:03:12,374 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:03:12,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370068914]
[2023-11-29 04:03:12,374 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:03:12,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862094924]
[2023-11-29 04:03:12,374 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [862094924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:03:12,374 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:03:12,377 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:03:12,377 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64140628]
[2023-11-29 04:03:12,377 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:03:12,380 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:03:12,380 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:03:12,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:03:12,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:03:12,385 INFO  L87              Difference]: Start difference. First operand 37599 states and 62598 transitions. Second operand  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:24,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:03:24,810 INFO  L93              Difference]: Finished difference Result 75797 states and 126212 transitions.
[2023-11-29 04:03:24,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:03:24,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 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 7378
[2023-11-29 04:03:24,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:03:24,847 INFO  L225             Difference]: With dead ends: 75797
[2023-11-29 04:03:24,847 INFO  L226             Difference]: Without dead ends: 44739
[2023-11-29 04:03:24,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:03:24,864 INFO  L413           NwaCegarLoop]: 16788 mSDtfsCounter, 18807 mSDsluCounter, 46791 mSDsCounter, 0 mSdLazyCounter, 20135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18807 SdHoareTripleChecker+Valid, 63579 SdHoareTripleChecker+Invalid, 20137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:03:24,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18807 Valid, 63579 Invalid, 20137 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 20135 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-11-29 04:03:24,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44739 states.
[2023-11-29 04:03:25,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44739 to 37599.
[2023-11-29 04:03:25,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37599 states, 37598 states have (on average 1.6649289855843397) internal successors, (62598), 37598 states have internal predecessors, (62598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:25,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37599 states to 37599 states and 62598 transitions.
[2023-11-29 04:03:25,234 INFO  L78                 Accepts]: Start accepts. Automaton has 37599 states and 62598 transitions. Word has length 7378
[2023-11-29 04:03:25,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:03:25,237 INFO  L495      AbstractCegarLoop]: Abstraction has 37599 states and 62598 transitions.
[2023-11-29 04:03:25,239 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:25,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 37599 states and 62598 transitions.
[2023-11-29 04:03:25,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-11-29 04:03:25,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:03:25,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:03:25,623 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 04:03:25,735 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:03:25,736 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:03:25,738 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:03:25,740 INFO  L85        PathProgramCache]: Analyzing trace with hash -503029685, now seen corresponding path program 1 times
[2023-11-29 04:03:25,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:03:25,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199746929]
[2023-11-29 04:03:25,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:03:25,741 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:03:26,398 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:03:26,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530397437]
[2023-11-29 04:03:26,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:03:26,399 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:03:26,400 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:03:26,400 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:03:26,401 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 04:03:35,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:03:35,552 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36927 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 04:03:35,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:03:47,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:03:47,324 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:03:47,324 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:03:47,324 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199746929]
[2023-11-29 04:03:47,324 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:03:47,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530397437]
[2023-11-29 04:03:47,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [530397437] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:03:47,325 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:03:47,327 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:03:47,327 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256114938]
[2023-11-29 04:03:47,327 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:03:47,332 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:03:47,332 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:03:47,337 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:03:47,337 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:03:47,338 INFO  L87              Difference]: Start difference. First operand 37599 states and 62598 transitions. Second operand  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:59,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:03:59,354 INFO  L93              Difference]: Finished difference Result 78433 states and 130602 transitions.
[2023-11-29 04:03:59,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:03:59,356 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 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 7378
[2023-11-29 04:03:59,360 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:03:59,389 INFO  L225             Difference]: With dead ends: 78433
[2023-11-29 04:03:59,390 INFO  L226             Difference]: Without dead ends: 47375
[2023-11-29 04:03:59,405 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:03:59,406 INFO  L413           NwaCegarLoop]: 13246 mSDtfsCounter, 20067 mSDsluCounter, 39718 mSDsCounter, 0 mSdLazyCounter, 19467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20067 SdHoareTripleChecker+Valid, 52964 SdHoareTripleChecker+Invalid, 19468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2023-11-29 04:03:59,406 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20067 Valid, 52964 Invalid, 19468 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19467 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time]
[2023-11-29 04:03:59,440 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47375 states.
[2023-11-29 04:03:59,727 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47375 to 40233.
[2023-11-29 04:03:59,756 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40233 states, 40232 states have (on average 1.664993040365878) internal successors, (66986), 40232 states have internal predecessors, (66986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:59,798 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40233 states to 40233 states and 66986 transitions.
[2023-11-29 04:03:59,798 INFO  L78                 Accepts]: Start accepts. Automaton has 40233 states and 66986 transitions. Word has length 7378
[2023-11-29 04:03:59,801 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:03:59,801 INFO  L495      AbstractCegarLoop]: Abstraction has 40233 states and 66986 transitions.
[2023-11-29 04:03:59,802 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:03:59,802 INFO  L276                IsEmpty]: Start isEmpty. Operand 40233 states and 66986 transitions.
[2023-11-29 04:04:00,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-11-29 04:04:00,021 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:04:00,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:04:00,110 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 04:04:00,223 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:04:00,223 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:04:00,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:04:00,224 INFO  L85        PathProgramCache]: Analyzing trace with hash -1293577101, now seen corresponding path program 1 times
[2023-11-29 04:04:00,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:04:00,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067591691]
[2023-11-29 04:04:00,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:04:00,225 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:04:00,862 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:04:00,862 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959749561]
[2023-11-29 04:04:00,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:04:00,864 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:04:00,864 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:04:00,865 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:04:00,865 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 04:04:09,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:04:10,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36927 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:04:10,120 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:04:27,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:04:27,933 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:04:27,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:04:27,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067591691]
[2023-11-29 04:04:27,933 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:04:27,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959749561]
[2023-11-29 04:04:27,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [959749561] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:04:27,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:04:27,935 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:04:27,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417527946]
[2023-11-29 04:04:27,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:04:27,939 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:04:27,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:04:27,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:04:27,942 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:04:27,944 INFO  L87              Difference]: Start difference. First operand 40233 states and 66986 transitions. Second operand  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:04:43,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:04:43,928 INFO  L93              Difference]: Finished difference Result 82571 states and 137490 transitions.
[2023-11-29 04:04:43,928 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 04:04:43,930 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 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 7379
[2023-11-29 04:04:43,933 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:04:43,967 INFO  L225             Difference]: With dead ends: 82571
[2023-11-29 04:04:43,967 INFO  L226             Difference]: Without dead ends: 48879
[2023-11-29 04:04:43,984 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 04:04:43,985 INFO  L413           NwaCegarLoop]: 16713 mSDtfsCounter, 25419 mSDsluCounter, 63344 mSDsCounter, 0 mSdLazyCounter, 25107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25419 SdHoareTripleChecker+Valid, 80057 SdHoareTripleChecker+Invalid, 25109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time
[2023-11-29 04:04:43,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25419 Valid, 80057 Invalid, 25109 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 25107 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time]
[2023-11-29 04:04:44,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48879 states.
[2023-11-29 04:04:44,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48879 to 44499.
[2023-11-29 04:04:44,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44499 states, 44498 states have (on average 1.6648838150029215) internal successors, (74084), 44498 states have internal predecessors, (74084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:04:44,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44499 states to 44499 states and 74084 transitions.
[2023-11-29 04:04:44,483 INFO  L78                 Accepts]: Start accepts. Automaton has 44499 states and 74084 transitions. Word has length 7379
[2023-11-29 04:04:44,486 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:04:44,486 INFO  L495      AbstractCegarLoop]: Abstraction has 44499 states and 74084 transitions.
[2023-11-29 04:04:44,487 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:04:44,487 INFO  L276                IsEmpty]: Start isEmpty. Operand 44499 states and 74084 transitions.
[2023-11-29 04:04:44,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-11-29 04:04:44,705 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:04:44,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:04:44,794 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-11-29 04:04:44,907 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:04:44,907 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:04:44,907 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:04:44,908 INFO  L85        PathProgramCache]: Analyzing trace with hash 1604453237, now seen corresponding path program 1 times
[2023-11-29 04:04:44,908 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:04:44,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46628792]
[2023-11-29 04:04:44,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:04:44,909 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:04:45,521 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:04:45,521 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654283956]
[2023-11-29 04:04:45,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:04:45,523 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:04:45,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:04:45,524 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:04:45,524 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 04:04:54,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:04:54,658 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36928 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-29 04:04:54,734 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:05:06,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:05:06,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:05:06,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:05:06,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46628792]
[2023-11-29 04:05:06,707 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:05:06,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654283956]
[2023-11-29 04:05:06,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654283956] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:05:06,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:05:06,709 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 04:05:06,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667838758]
[2023-11-29 04:05:06,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:05:06,712 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 04:05:06,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:05:06,715 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 04:05:06,715 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-29 04:05:06,717 INFO  L87              Difference]: Start difference. First operand 44499 states and 74084 transitions. Second operand  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:05:22,076 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:05:22,077 INFO  L93              Difference]: Finished difference Result 99485 states and 165646 transitions.
[2023-11-29 04:05:22,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:05:22,078 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 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 7379
[2023-11-29 04:05:22,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:05:22,119 INFO  L225             Difference]: With dead ends: 99485
[2023-11-29 04:05:22,120 INFO  L226             Difference]: Without dead ends: 61527
[2023-11-29 04:05:22,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7381 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-11-29 04:05:22,139 INFO  L413           NwaCegarLoop]: 21846 mSDtfsCounter, 28092 mSDsluCounter, 62894 mSDsCounter, 0 mSdLazyCounter, 23697 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28092 SdHoareTripleChecker+Valid, 84740 SdHoareTripleChecker+Invalid, 23701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:05:22,139 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28092 Valid, 84740 Invalid, 23701 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 23697 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time]
[2023-11-29 04:05:22,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61527 states.
[2023-11-29 04:05:22,588 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61527 to 42993.
[2023-11-29 04:05:22,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42993 states, 42992 states have (on average 1.6649144026795684) internal successors, (71578), 42992 states have internal predecessors, (71578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:05:22,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42993 states to 42993 states and 71578 transitions.
[2023-11-29 04:05:22,663 INFO  L78                 Accepts]: Start accepts. Automaton has 42993 states and 71578 transitions. Word has length 7379
[2023-11-29 04:05:22,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:05:22,666 INFO  L495      AbstractCegarLoop]: Abstraction has 42993 states and 71578 transitions.
[2023-11-29 04:05:22,668 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:05:22,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 42993 states and 71578 transitions.
[2023-11-29 04:05:22,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-11-29 04:05:22,885 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:05:22,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:05:22,971 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-11-29 04:05:23,087 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:05:23,088 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:05:23,088 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:05:23,089 INFO  L85        PathProgramCache]: Analyzing trace with hash 303410995, now seen corresponding path program 1 times
[2023-11-29 04:05:23,089 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:05:23,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705847675]
[2023-11-29 04:05:23,090 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:05:23,090 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:05:23,701 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:05:23,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015404514]
[2023-11-29 04:05:23,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:05:23,702 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:05:23,702 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:05:23,703 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:05:23,704 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4d60199-30bb-40db-af0d-9493b261db56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 04:05:32,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:05:32,627 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36929 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:05:32,703 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:05:44,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:05:44,243 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:05:44,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:05:44,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705847675]
[2023-11-29 04:05:44,243 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:05:44,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015404514]
[2023-11-29 04:05:44,243 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015404514] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:05:44,243 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:05:44,245 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 04:05:44,245 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996947556]
[2023-11-29 04:05:44,245 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:05:44,248 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 04:05:44,248 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:05:44,251 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 04:05:44,252 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 04:05:44,253 INFO  L87              Difference]: Start difference. First operand 42993 states and 71578 transitions. Second operand  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)