./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-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_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/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_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/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_330b43d1-c77f-4126-8215-12b2d21e937f/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 5005a66ba1901c31301891744d2f11ccbd93dc0352cb6ddb7683c66b3941543b
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 00:14:41,740 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 00:14:41,805 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 00:14:41,810 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 00:14:41,810 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 00:14:41,834 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 00:14:41,835 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 00:14:41,835 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 00:14:41,836 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 00:14:41,836 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 00:14:41,837 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 00:14:41,838 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 00:14:41,838 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 00:14:41,839 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 00:14:41,840 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 00:14:41,840 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 00:14:41,841 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 00:14:41,841 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 00:14:41,842 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 00:14:41,842 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 00:14:41,843 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 00:14:41,843 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 00:14:41,844 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 00:14:41,844 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 00:14:41,845 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 00:14:41,845 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 00:14:41,846 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 00:14:41,846 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 00:14:41,847 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:14:41,847 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 00:14:41,848 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 00:14:41,848 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 00:14:41,849 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 00:14:41,849 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 00:14:41,850 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 00:14:41,850 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 00:14:41,850 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 00:14:41,851 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 00:14:41,851 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 00:14:41,851 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_330b43d1-c77f-4126-8215-12b2d21e937f/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_330b43d1-c77f-4126-8215-12b2d21e937f/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 -> 5005a66ba1901c31301891744d2f11ccbd93dc0352cb6ddb7683c66b3941543b
[2023-11-29 00:14:42,109 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 00:14:42,131 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 00:14:42,134 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 00:14:42,135 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 00:14:42,136 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 00:14:42,137 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-11-29 00:14:44,916 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 00:14:45,406 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 00:14:45,406 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-11-29 00:14:45,452 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/data/96df23e76/e2468637442d41d3acc55ed6603beecb/FLAG3a7df8478
[2023-11-29 00:14:45,467 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/data/96df23e76/e2468637442d41d3acc55ed6603beecb
[2023-11-29 00:14:45,469 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 00:14:45,471 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 00:14:45,473 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 00:14:45,473 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 00:14:45,480 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 00:14:45,481 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:45" (1/1) ...
[2023-11-29 00:14:45,482 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f878cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:45, skipping insertion in model container
[2023-11-29 00:14:45,482 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:45" (1/1) ...
[2023-11-29 00:14:45,695 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 00:14:46,036 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_330b43d1-c77f-4126-8215-12b2d21e937f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c[1179,1192]
[2023-11-29 00:14:47,306 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:14:47,316 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 00:14:47,329 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_330b43d1-c77f-4126-8215-12b2d21e937f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c[1179,1192]
[2023-11-29 00:14:48,185 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:14:48,201 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 00:14:48,201 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48 WrapperNode
[2023-11-29 00:14:48,201 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 00:14:48,203 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 00:14:48,203 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 00:14:48,203 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 00:14:48,211 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:48,505 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:51,612 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49779
[2023-11-29 00:14:51,612 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 00:14:51,613 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 00:14:51,613 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 00:14:51,613 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 00:14:51,622 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:51,622 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:52,377 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:52,793 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 00:14:52,793 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:52,794 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:53,502 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:53,833 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:54,050 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:54,172 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:54,822 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 00:14:54,823 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 00:14:54,823 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 00:14:54,823 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 00:14:54,824 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (1/1) ...
[2023-11-29 00:14:54,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:14:54,837 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:14:54,849 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 00:14:54,851 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 00:14:54,884 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 00:14:54,884 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 00:14:54,884 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 00:14:54,884 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 00:14:56,769 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 00:14:56,771 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 00:15:18,699 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 00:15:19,261 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 00:15:19,261 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 00:15:19,267 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:19 BoogieIcfgContainer
[2023-11-29 00:15:19,267 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 00:15:19,269 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 00:15:19,269 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 00:15:19,273 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 00:15:19,273 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:14:45" (1/3) ...
[2023-11-29 00:15:19,274 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7339785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:19, skipping insertion in model container
[2023-11-29 00:15:19,274 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:48" (2/3) ...
[2023-11-29 00:15:19,274 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7339785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:19, skipping insertion in model container
[2023-11-29 00:15:19,274 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:19" (3/3) ...
[2023-11-29 00:15:19,276 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-11-29 00:15:19,294 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 00:15:19,294 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 00:15:19,490 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 00:15:19,497 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;@61ee6d1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 00:15:19,497 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 00:15:19,533 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:19,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-11-29 00:15:19,566 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:19,567 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 00:15:19,567 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:19,572 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:19,573 INFO  L85        PathProgramCache]: Analyzing trace with hash -2064861600, now seen corresponding path program 1 times
[2023-11-29 00:15:19,582 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:19,583 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140052724]
[2023-11-29 00:15:19,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:19,584 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:20,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:21,932 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 00:15:21,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:21,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140052724]
[2023-11-29 00:15:21,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140052724] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:21,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:21,934 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:15:21,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748756133]
[2023-11-29 00:15:21,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:21,942 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:15:21,942 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:21,973 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:15:21,974 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:15:22,006 INFO  L87              Difference]: Start difference. First operand  has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 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 00:15:22,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:22,833 INFO  L93              Difference]: Finished difference Result 21283 states and 35481 transitions.
[2023-11-29 00:15:22,835 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:15:22,836 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 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 00:15:22,839 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:22,910 INFO  L225             Difference]: With dead ends: 21283
[2023-11-29 00:15:22,910 INFO  L226             Difference]: Without dead ends: 10909
[2023-11-29 00:15:22,927 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 00:15:22,931 INFO  L413           NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36351 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54529 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:22,932 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54529 Invalid, 13 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:15:22,971 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10909 states.
[2023-11-29 00:15:23,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 10909.
[2023-11-29 00:15:23,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10909 states, 10908 states have (on average 1.6669416941694168) internal successors, (18183), 10908 states have internal predecessors, (18183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:23,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 18183 transitions.
[2023-11-29 00:15:23,302 INFO  L78                 Accepts]: Start accepts. Automaton has 10909 states and 18183 transitions. Word has length 490
[2023-11-29 00:15:23,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:23,304 INFO  L495      AbstractCegarLoop]: Abstraction has 10909 states and 18183 transitions.
[2023-11-29 00:15:23,305 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 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 00:15:23,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 10909 states and 18183 transitions.
[2023-11-29 00:15:23,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-11-29 00:15:23,318 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:23,318 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 00:15:23,318 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 00:15:23,319 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:23,319 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:23,320 INFO  L85        PathProgramCache]: Analyzing trace with hash 415527704, now seen corresponding path program 1 times
[2023-11-29 00:15:23,320 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:23,320 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648284884]
[2023-11-29 00:15:23,320 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:23,321 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:23,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:24,405 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 00:15:24,405 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:24,406 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648284884]
[2023-11-29 00:15:24,406 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648284884] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:24,406 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:24,406 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:15:24,407 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810403486]
[2023-11-29 00:15:24,407 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:24,409 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:15:24,409 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:24,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:15:24,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:15:24,412 INFO  L87              Difference]: Start difference. First operand 10909 states and 18183 transitions. Second operand  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 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 00:15:24,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:24,947 INFO  L93              Difference]: Finished difference Result 21286 states and 35479 transitions.
[2023-11-29 00:15:24,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:15:24,948 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 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 00:15:24,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:25,004 INFO  L225             Difference]: With dead ends: 21286
[2023-11-29 00:15:25,004 INFO  L226             Difference]: Without dead ends: 10912
[2023-11-29 00:15:25,017 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 00:15:25,019 INFO  L413           NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36349 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54527 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:25,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54527 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:15:25,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10912 states.
[2023-11-29 00:15:25,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10911.
[2023-11-29 00:15:25,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10911 states, 10910 states have (on average 1.666819431714024) internal successors, (18185), 10910 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:25,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 18185 transitions.
[2023-11-29 00:15:25,278 INFO  L78                 Accepts]: Start accepts. Automaton has 10911 states and 18185 transitions. Word has length 491
[2023-11-29 00:15:25,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:25,279 INFO  L495      AbstractCegarLoop]: Abstraction has 10911 states and 18185 transitions.
[2023-11-29 00:15:25,279 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 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 00:15:25,279 INFO  L276                IsEmpty]: Start isEmpty. Operand 10911 states and 18185 transitions.
[2023-11-29 00:15:25,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 493
[2023-11-29 00:15:25,291 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:25,292 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:15:25,292 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 00:15:25,292 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:25,293 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:25,293 INFO  L85        PathProgramCache]: Analyzing trace with hash 1561034748, now seen corresponding path program 1 times
[2023-11-29 00:15:25,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:25,293 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939836512]
[2023-11-29 00:15:25,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:25,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:25,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:26,266 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 00:15:26,266 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:26,267 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939836512]
[2023-11-29 00:15:26,267 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939836512] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:26,267 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:26,268 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 00:15:26,268 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074503119]
[2023-11-29 00:15:26,268 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:26,269 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:15:26,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:26,270 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:15:26,270 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 00:15:26,271 INFO  L87              Difference]: Start difference. First operand 10911 states and 18185 transitions. Second operand  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:26,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:26,939 INFO  L93              Difference]: Finished difference Result 31663 states and 52774 transitions.
[2023-11-29 00:15:26,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 00:15:26,940 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 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 492
[2023-11-29 00:15:26,941 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:26,987 INFO  L225             Difference]: With dead ends: 31663
[2023-11-29 00:15:26,987 INFO  L226             Difference]: Without dead ends: 21287
[2023-11-29 00:15:27,001 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 00:15:27,003 INFO  L413           NwaCegarLoop]: 18491 mSDtfsCounter, 34566 mSDsluCounter, 54841 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34566 SdHoareTripleChecker+Valid, 73332 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:27,004 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34566 Valid, 73332 Invalid, 29 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:15:27,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21287 states.
[2023-11-29 00:15:27,199 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 10916.
[2023-11-29 00:15:27,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10916 states, 10915 states have (on average 1.6666972056802565) internal successors, (18192), 10915 states have internal predecessors, (18192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:27,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 18192 transitions.
[2023-11-29 00:15:27,229 INFO  L78                 Accepts]: Start accepts. Automaton has 10916 states and 18192 transitions. Word has length 492
[2023-11-29 00:15:27,229 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:27,230 INFO  L495      AbstractCegarLoop]: Abstraction has 10916 states and 18192 transitions.
[2023-11-29 00:15:27,230 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:27,230 INFO  L276                IsEmpty]: Start isEmpty. Operand 10916 states and 18192 transitions.
[2023-11-29 00:15:27,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 494
[2023-11-29 00:15:27,239 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:27,239 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, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:15:27,239 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 00:15:27,240 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:27,240 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:27,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 1310986150, now seen corresponding path program 1 times
[2023-11-29 00:15:27,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:27,241 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841873430]
[2023-11-29 00:15:27,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:27,241 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:27,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:27,978 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 00:15:27,978 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:27,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841873430]
[2023-11-29 00:15:27,979 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841873430] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:27,979 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:27,979 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:15:27,979 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526133437]
[2023-11-29 00:15:27,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:27,980 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:15:27,980 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:27,981 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:15:27,981 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:15:27,982 INFO  L87              Difference]: Start difference. First operand 10916 states and 18192 transitions. Second operand  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:28,423 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:28,423 INFO  L93              Difference]: Finished difference Result 31666 states and 52775 transitions.
[2023-11-29 00:15:28,423 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:15:28,424 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 493
[2023-11-29 00:15:28,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:28,451 INFO  L225             Difference]: With dead ends: 31666
[2023-11-29 00:15:28,451 INFO  L226             Difference]: Without dead ends: 21285
[2023-11-29 00:15:28,464 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 00:15:28,465 INFO  L413           NwaCegarLoop]: 18489 mSDtfsCounter, 17276 mSDsluCounter, 36656 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17276 SdHoareTripleChecker+Valid, 55145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:28,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17276 Valid, 55145 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:15:28,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21285 states.
[2023-11-29 00:15:28,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21285 to 10916.
[2023-11-29 00:15:28,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10916 states, 10915 states have (on average 1.6666972056802565) internal successors, (18192), 10915 states have internal predecessors, (18192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:28,657 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 18192 transitions.
[2023-11-29 00:15:28,657 INFO  L78                 Accepts]: Start accepts. Automaton has 10916 states and 18192 transitions. Word has length 493
[2023-11-29 00:15:28,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:28,658 INFO  L495      AbstractCegarLoop]: Abstraction has 10916 states and 18192 transitions.
[2023-11-29 00:15:28,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:28,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 10916 states and 18192 transitions.
[2023-11-29 00:15:28,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 495
[2023-11-29 00:15:28,666 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:28,666 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:15:28,667 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 00:15:28,667 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:28,667 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:28,667 INFO  L85        PathProgramCache]: Analyzing trace with hash 1875161366, now seen corresponding path program 1 times
[2023-11-29 00:15:28,667 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:28,668 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725083766]
[2023-11-29 00:15:28,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:28,668 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:28,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:29,808 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 00:15:29,808 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:29,808 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725083766]
[2023-11-29 00:15:29,808 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725083766] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:29,809 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:29,809 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 00:15:29,809 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068016221]
[2023-11-29 00:15:29,809 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:29,810 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:15:29,810 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:29,811 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:15:29,811 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 00:15:29,812 INFO  L87              Difference]: Start difference. First operand 10916 states and 18192 transitions. Second operand  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:30,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:30,753 INFO  L93              Difference]: Finished difference Result 31848 states and 53079 transitions.
[2023-11-29 00:15:30,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:15:30,754 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 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 494
[2023-11-29 00:15:30,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:30,797 INFO  L225             Difference]: With dead ends: 31848
[2023-11-29 00:15:30,797 INFO  L226             Difference]: Without dead ends: 21467
[2023-11-29 00:15:30,814 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-29 00:15:30,815 INFO  L413           NwaCegarLoop]: 18479 mSDtfsCounter, 69844 mSDsluCounter, 53619 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69844 SdHoareTripleChecker+Valid, 72098 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:30,816 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69844 Valid, 72098 Invalid, 30 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:15:30,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21467 states.
[2023-11-29 00:15:31,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21467 to 11101.
[2023-11-29 00:15:31,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6665765765765765) internal successors, (18499), 11100 states have internal predecessors, (18499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:31,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18499 transitions.
[2023-11-29 00:15:31,083 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18499 transitions. Word has length 494
[2023-11-29 00:15:31,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:31,084 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18499 transitions.
[2023-11-29 00:15:31,085 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:31,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18499 transitions.
[2023-11-29 00:15:31,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7390
[2023-11-29 00:15:31,573 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:31,577 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:31,578 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 00:15:31,578 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:31,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:31,581 INFO  L85        PathProgramCache]: Analyzing trace with hash 1916709481, now seen corresponding path program 1 times
[2023-11-29 00:15:31,582 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:31,582 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905047635]
[2023-11-29 00:15:31,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:31,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:32,748 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:15:32,748 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448380866]
[2023-11-29 00:15:32,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:32,750 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:15:32,751 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:15:32,754 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:15:32,759 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 00:15:41,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:15:41,878 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37068 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:15:42,082 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:15:44,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:15:44,870 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:15:44,870 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:15:44,870 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905047635]
[2023-11-29 00:15:44,870 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:15:44,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448380866]
[2023-11-29 00:15:44,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [448380866] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:15:44,871 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:15:44,873 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:15:44,874 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467507874]
[2023-11-29 00:15:44,874 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:15:44,881 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:15:44,882 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:15:44,888 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:15:44,888 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:15:44,890 INFO  L87              Difference]: Start difference. First operand 11101 states and 18499 transitions. Second operand  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:50,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:15:50,792 INFO  L93              Difference]: Finished difference Result 22059 states and 36759 transitions.
[2023-11-29 00:15:50,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:15:50,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 0 states have call successors, (0), 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 7389
[2023-11-29 00:15:50,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:15:50,819 INFO  L225             Difference]: With dead ends: 22059
[2023-11-29 00:15:50,819 INFO  L226             Difference]: Without dead ends: 11678
[2023-11-29 00:15:50,831 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7389 GetRequests, 7386 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 00:15:50,832 INFO  L413           NwaCegarLoop]: 14076 mSDtfsCounter, 34605 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34605 SdHoareTripleChecker+Valid, 15538 SdHoareTripleChecker+Invalid, 6064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 00:15:50,832 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34605 Valid, 15538 Invalid, 6064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 00:15:50,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11678 states.
[2023-11-29 00:15:50,987 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11678 to 11101.
[2023-11-29 00:15:51,001 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6664864864864866) internal successors, (18498), 11100 states have internal predecessors, (18498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:51,018 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18498 transitions.
[2023-11-29 00:15:51,018 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18498 transitions. Word has length 7389
[2023-11-29 00:15:51,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:15:51,021 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18498 transitions.
[2023-11-29 00:15:51,023 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:15:51,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18498 transitions.
[2023-11-29 00:15:51,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7391
[2023-11-29 00:15:51,299 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:15:51,303 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:51,390 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 00:15:51,503 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 00:15:51,504 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:15:51,504 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:15:51,507 INFO  L85        PathProgramCache]: Analyzing trace with hash 880036465, now seen corresponding path program 1 times
[2023-11-29 00:15:51,507 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:15:51,507 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454448757]
[2023-11-29 00:15:51,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:51,508 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:15:52,231 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:15:52,231 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891828994]
[2023-11-29 00:15:52,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:15:52,234 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:15:52,234 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:15:52,235 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:15:52,237 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 00:16:00,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:16:00,938 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37069 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:16:01,054 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:16:03,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:16:03,752 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:16:03,753 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:16:03,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454448757]
[2023-11-29 00:16:03,753 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:16:03,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891828994]
[2023-11-29 00:16:03,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891828994] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:16:03,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:16:03,756 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:16:03,756 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093851300]
[2023-11-29 00:16:03,756 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:16:03,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:16:03,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:16:03,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:16:03,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:16:03,776 INFO  L87              Difference]: Start difference. First operand 11101 states and 18498 transitions. Second operand  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:09,768 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:16:09,768 INFO  L93              Difference]: Finished difference Result 22072 states and 36778 transitions.
[2023-11-29 00:16:09,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:16:09,770 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 0 states have call successors, (0), 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 7390
[2023-11-29 00:16:09,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:16:09,793 INFO  L225             Difference]: With dead ends: 22072
[2023-11-29 00:16:09,793 INFO  L226             Difference]: Without dead ends: 11691
[2023-11-29 00:16:09,802 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7390 GetRequests, 7387 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 00:16:09,803 INFO  L413           NwaCegarLoop]: 14095 mSDtfsCounter, 34594 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34594 SdHoareTripleChecker+Valid, 15577 SdHoareTripleChecker+Invalid, 6066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-11-29 00:16:09,803 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34594 Valid, 15577 Invalid, 6066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-11-29 00:16:09,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11691 states.
[2023-11-29 00:16:09,951 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11691 to 11101.
[2023-11-29 00:16:09,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6663963963963964) internal successors, (18497), 11100 states have internal predecessors, (18497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:09,978 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18497 transitions.
[2023-11-29 00:16:09,978 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18497 transitions. Word has length 7390
[2023-11-29 00:16:09,981 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:16:09,981 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18497 transitions.
[2023-11-29 00:16:09,983 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:09,983 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18497 transitions.
[2023-11-29 00:16:10,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7392
[2023-11-29 00:16:10,509 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:16:10,512 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:10,605 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 00:16:10,713 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-29 00:16:10,713 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:16:10,714 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:16:10,718 INFO  L85        PathProgramCache]: Analyzing trace with hash 2031123590, now seen corresponding path program 1 times
[2023-11-29 00:16:10,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:16:10,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849753023]
[2023-11-29 00:16:10,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:10,720 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:16:11,534 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:16:11,534 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966666579]
[2023-11-29 00:16:11,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:11,536 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:16:11,536 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:16:11,537 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:16:11,539 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 00:16:20,876 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:16:21,102 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37070 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:16:21,272 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:16:25,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:16:25,133 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:16:25,133 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:16:25,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849753023]
[2023-11-29 00:16:25,133 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:16:25,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966666579]
[2023-11-29 00:16:25,133 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [966666579] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:16:25,133 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:16:25,136 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:16:25,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306096073]
[2023-11-29 00:16:25,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:16:25,145 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:16:25,145 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:16:25,154 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:16:25,154 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:16:25,156 INFO  L87              Difference]: Start difference. First operand 11101 states and 18497 transitions. Second operand  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:31,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:16:31,355 INFO  L93              Difference]: Finished difference Result 22088 states and 36802 transitions.
[2023-11-29 00:16:31,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:16:31,356 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 0 states have call successors, (0), 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 7391
[2023-11-29 00:16:31,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:16:31,367 INFO  L225             Difference]: With dead ends: 22088
[2023-11-29 00:16:31,367 INFO  L226             Difference]: Without dead ends: 11707
[2023-11-29 00:16:31,373 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7391 GetRequests, 7388 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 00:16:31,374 INFO  L413           NwaCegarLoop]: 14119 mSDtfsCounter, 34581 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34581 SdHoareTripleChecker+Valid, 15626 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-11-29 00:16:31,374 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34581 Valid, 15626 Invalid, 6068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6068 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-11-29 00:16:31,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11707 states.
[2023-11-29 00:16:31,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11707 to 11101.
[2023-11-29 00:16:31,528 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6663063063063064) internal successors, (18496), 11100 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:31,545 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18496 transitions.
[2023-11-29 00:16:31,546 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18496 transitions. Word has length 7391
[2023-11-29 00:16:31,548 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:16:31,549 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18496 transitions.
[2023-11-29 00:16:31,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:31,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18496 transitions.
[2023-11-29 00:16:31,812 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7393
[2023-11-29 00:16:31,812 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:16:31,817 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:31,908 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 00:16:32,017 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:16:32,018 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:16:32,018 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:16:32,021 INFO  L85        PathProgramCache]: Analyzing trace with hash -428473708, now seen corresponding path program 1 times
[2023-11-29 00:16:32,021 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:16:32,021 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187721809]
[2023-11-29 00:16:32,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:32,022 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:16:32,838 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:16:32,839 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727659855]
[2023-11-29 00:16:32,841 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:32,841 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:16:32,841 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:16:32,842 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:16:32,848 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 00:16:41,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:16:41,952 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37071 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:16:42,093 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:16:44,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:16:44,343 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:16:44,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:16:44,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187721809]
[2023-11-29 00:16:44,343 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:16:44,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727659855]
[2023-11-29 00:16:44,343 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727659855] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:16:44,343 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:16:44,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:16:44,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821681301]
[2023-11-29 00:16:44,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:16:44,352 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:16:44,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:16:44,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:16:44,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:16:44,359 INFO  L87              Difference]: Start difference. First operand 11101 states and 18496 transitions. Second operand  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:50,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:16:50,160 INFO  L93              Difference]: Finished difference Result 22095 states and 36811 transitions.
[2023-11-29 00:16:50,160 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:16:50,162 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 0 states have call successors, (0), 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 7392
[2023-11-29 00:16:50,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:16:50,171 INFO  L225             Difference]: With dead ends: 22095
[2023-11-29 00:16:50,171 INFO  L226             Difference]: Without dead ends: 11714
[2023-11-29 00:16:50,178 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7392 GetRequests, 7389 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 00:16:50,179 INFO  L413           NwaCegarLoop]: 14128 mSDtfsCounter, 34574 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 6070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34574 SdHoareTripleChecker+Valid, 15645 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 00:16:50,179 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34574 Valid, 15645 Invalid, 6070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6070 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 00:16:50,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11714 states.
[2023-11-29 00:16:50,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 11101.
[2023-11-29 00:16:50,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6662162162162162) internal successors, (18495), 11100 states have internal predecessors, (18495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:50,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18495 transitions.
[2023-11-29 00:16:50,345 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18495 transitions. Word has length 7392
[2023-11-29 00:16:50,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:16:50,348 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18495 transitions.
[2023-11-29 00:16:50,350 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:16:50,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18495 transitions.
[2023-11-29 00:16:50,613 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7394
[2023-11-29 00:16:50,613 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:16:50,617 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:50,712 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 00:16:50,818 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:16:50,818 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:16:50,818 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:16:50,823 INFO  L85        PathProgramCache]: Analyzing trace with hash 1044960087, now seen corresponding path program 1 times
[2023-11-29 00:16:50,823 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:16:50,823 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69743971]
[2023-11-29 00:16:50,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:50,825 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:16:51,493 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:16:51,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867567696]
[2023-11-29 00:16:51,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:16:51,495 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:16:51,495 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:16:51,496 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:16:51,497 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 00:17:00,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:17:00,809 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37072 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:17:00,909 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:17:03,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:17:03,234 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:17:03,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:17:03,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69743971]
[2023-11-29 00:17:03,234 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:17:03,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867567696]
[2023-11-29 00:17:03,234 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867567696] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:17:03,234 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:17:03,236 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:17:03,236 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033800699]
[2023-11-29 00:17:03,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:17:03,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:17:03,242 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:17:03,247 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:17:03,247 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:17:03,249 INFO  L87              Difference]: Start difference. First operand 11101 states and 18495 transitions. Second operand  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:09,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:17:09,082 INFO  L93              Difference]: Finished difference Result 22099 states and 36815 transitions.
[2023-11-29 00:17:09,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:17:09,084 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 0 states have call successors, (0), 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 7393
[2023-11-29 00:17:09,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:17:09,095 INFO  L225             Difference]: With dead ends: 22099
[2023-11-29 00:17:09,095 INFO  L226             Difference]: Without dead ends: 11718
[2023-11-29 00:17:09,101 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7393 GetRequests, 7390 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 00:17:09,102 INFO  L413           NwaCegarLoop]: 14132 mSDtfsCounter, 34569 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 6072 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34569 SdHoareTripleChecker+Valid, 15654 SdHoareTripleChecker+Invalid, 6072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 00:17:09,103 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34569 Valid, 15654 Invalid, 6072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6072 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 00:17:09,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11718 states.
[2023-11-29 00:17:09,226 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11718 to 11101.
[2023-11-29 00:17:09,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6661261261261262) internal successors, (18494), 11100 states have internal predecessors, (18494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:09,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18494 transitions.
[2023-11-29 00:17:09,254 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18494 transitions. Word has length 7393
[2023-11-29 00:17:09,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:17:09,256 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18494 transitions.
[2023-11-29 00:17:09,257 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:09,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18494 transitions.
[2023-11-29 00:17:09,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7395
[2023-11-29 00:17:09,482 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:17:09,486 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:09,578 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 00:17:09,694 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 00:17:09,694 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:17:09,694 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:17:09,697 INFO  L85        PathProgramCache]: Analyzing trace with hash -549592289, now seen corresponding path program 1 times
[2023-11-29 00:17:09,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:17:09,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918683565]
[2023-11-29 00:17:09,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:09,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:17:10,364 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:17:10,364 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20674836]
[2023-11-29 00:17:10,365 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:10,366 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:17:10,366 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:17:10,366 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:17:10,368 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 00:17:19,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:17:19,407 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37073 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:17:19,505 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:17:21,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:17:21,847 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:17:21,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:17:21,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918683565]
[2023-11-29 00:17:21,847 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:17:21,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20674836]
[2023-11-29 00:17:21,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [20674836] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:17:21,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:17:21,850 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:17:21,850 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519079783]
[2023-11-29 00:17:21,850 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:17:21,856 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:17:21,856 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:17:21,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:17:21,861 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:17:21,863 INFO  L87              Difference]: Start difference. First operand 11101 states and 18494 transitions. Second operand  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:27,746 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:17:27,746 INFO  L93              Difference]: Finished difference Result 22124 states and 36854 transitions.
[2023-11-29 00:17:27,747 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:17:27,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 0 states have call successors, (0), 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 7394
[2023-11-29 00:17:27,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:17:27,762 INFO  L225             Difference]: With dead ends: 22124
[2023-11-29 00:17:27,762 INFO  L226             Difference]: Without dead ends: 11743
[2023-11-29 00:17:27,769 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7394 GetRequests, 7391 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 00:17:27,770 INFO  L413           NwaCegarLoop]: 14171 mSDtfsCounter, 34550 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 6074 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34550 SdHoareTripleChecker+Valid, 15733 SdHoareTripleChecker+Invalid, 6074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 00:17:27,770 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34550 Valid, 15733 Invalid, 6074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6074 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 00:17:27,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11743 states.
[2023-11-29 00:17:27,867 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 11101.
[2023-11-29 00:17:27,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.666036036036036) internal successors, (18493), 11100 states have internal predecessors, (18493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:27,892 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18493 transitions.
[2023-11-29 00:17:27,892 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18493 transitions. Word has length 7394
[2023-11-29 00:17:27,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:17:27,894 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18493 transitions.
[2023-11-29 00:17:27,896 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:27,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18493 transitions.
[2023-11-29 00:17:28,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7396
[2023-11-29 00:17:28,253 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:17:28,256 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:28,349 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 00:17:28,457 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 00:17:28,457 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:17:28,459 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:17:28,461 INFO  L85        PathProgramCache]: Analyzing trace with hash -1445315828, now seen corresponding path program 1 times
[2023-11-29 00:17:28,461 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:17:28,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154592296]
[2023-11-29 00:17:28,462 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:28,462 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:17:29,123 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:17:29,123 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752122542]
[2023-11-29 00:17:29,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:29,124 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:17:29,125 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:17:29,125 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:17:29,126 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 00:17:38,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:17:38,370 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37074 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:17:38,472 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:17:40,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:17:40,947 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:17:40,947 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:17:40,947 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154592296]
[2023-11-29 00:17:40,947 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:17:40,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752122542]
[2023-11-29 00:17:40,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752122542] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:17:40,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:17:40,950 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:17:40,950 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145172070]
[2023-11-29 00:17:40,951 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:17:40,956 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:17:40,956 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:17:40,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:17:40,961 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:17:40,963 INFO  L87              Difference]: Start difference. First operand 11101 states and 18493 transitions. Second operand  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:46,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:17:46,994 INFO  L93              Difference]: Finished difference Result 22143 states and 36883 transitions.
[2023-11-29 00:17:46,995 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:17:46,996 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 0 states have call successors, (0), 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 7395
[2023-11-29 00:17:46,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:17:47,006 INFO  L225             Difference]: With dead ends: 22143
[2023-11-29 00:17:47,007 INFO  L226             Difference]: Without dead ends: 11762
[2023-11-29 00:17:47,010 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7395 GetRequests, 7392 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 00:17:47,011 INFO  L413           NwaCegarLoop]: 14200 mSDtfsCounter, 34535 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34535 SdHoareTripleChecker+Valid, 15792 SdHoareTripleChecker+Invalid, 6076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-11-29 00:17:47,011 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34535 Valid, 15792 Invalid, 6076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-11-29 00:17:47,025 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11762 states.
[2023-11-29 00:17:47,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11101.
[2023-11-29 00:17:47,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.665945945945946) internal successors, (18492), 11100 states have internal predecessors, (18492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:47,143 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18492 transitions.
[2023-11-29 00:17:47,143 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18492 transitions. Word has length 7395
[2023-11-29 00:17:47,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:17:47,146 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18492 transitions.
[2023-11-29 00:17:47,147 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:17:47,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18492 transitions.
[2023-11-29 00:17:47,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7397
[2023-11-29 00:17:47,374 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:17:47,377 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:47,469 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 00:17:47,578 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 00:17:47,578 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:17:47,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:17:47,581 INFO  L85        PathProgramCache]: Analyzing trace with hash 342037288, now seen corresponding path program 1 times
[2023-11-29 00:17:47,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:17:47,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167068338]
[2023-11-29 00:17:47,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:47,582 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:17:48,245 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:17:48,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365630506]
[2023-11-29 00:17:48,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:17:48,247 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:17:48,247 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:17:48,248 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:17:48,249 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 00:17:57,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:17:57,436 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37075 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-29 00:17:57,539 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:17:59,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:17:59,946 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:17:59,946 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:17:59,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167068338]
[2023-11-29 00:17:59,946 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:17:59,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365630506]
[2023-11-29 00:17:59,946 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365630506] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:17:59,946 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:17:59,948 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 00:17:59,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119392208]
[2023-11-29 00:17:59,948 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:17:59,953 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:17:59,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:17:59,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:17:59,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:17:59,961 INFO  L87              Difference]: Start difference. First operand 11101 states and 18492 transitions. Second operand  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:05,585 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:18:05,585 INFO  L93              Difference]: Finished difference Result 22156 states and 36902 transitions.
[2023-11-29 00:18:05,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:18:05,588 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 0 states have call successors, (0), 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 7396
[2023-11-29 00:18:05,589 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:18:05,597 INFO  L225             Difference]: With dead ends: 22156
[2023-11-29 00:18:05,597 INFO  L226             Difference]: Without dead ends: 11775
[2023-11-29 00:18:05,603 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7396 GetRequests, 7393 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 00:18:05,604 INFO  L413           NwaCegarLoop]: 14219 mSDtfsCounter, 34524 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 6078 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34524 SdHoareTripleChecker+Valid, 15831 SdHoareTripleChecker+Invalid, 6078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 00:18:05,604 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34524 Valid, 15831 Invalid, 6078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6078 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 00:18:05,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11775 states.
[2023-11-29 00:18:05,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11101.
[2023-11-29 00:18:05,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6658558558558558) internal successors, (18491), 11100 states have internal predecessors, (18491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:05,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18491 transitions.
[2023-11-29 00:18:05,719 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18491 transitions. Word has length 7396
[2023-11-29 00:18:05,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:18:05,720 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18491 transitions.
[2023-11-29 00:18:05,722 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:05,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18491 transitions.
[2023-11-29 00:18:06,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7398
[2023-11-29 00:18:06,094 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:18:06,096 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:06,190 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 00:18:06,296 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 00:18:06,297 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:18:06,299 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:18:06,300 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133202391, now seen corresponding path program 1 times
[2023-11-29 00:18:06,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:18:06,301 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329590223]
[2023-11-29 00:18:06,301 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:06,301 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:18:06,953 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:18:06,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452221547]
[2023-11-29 00:18:06,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:06,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:18:06,954 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:18:06,955 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:18:06,956 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 00:18:16,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:18:16,648 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37076 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-29 00:18:16,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:18:22,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:18:22,363 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:18:22,364 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:18:22,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329590223]
[2023-11-29 00:18:22,364 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:18:22,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452221547]
[2023-11-29 00:18:22,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452221547] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:18:22,364 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:18:22,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 00:18:22,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203633699]
[2023-11-29 00:18:22,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:18:22,370 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-29 00:18:22,370 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:18:22,375 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-29 00:18:22,376 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-29 00:18:22,378 INFO  L87              Difference]: Start difference. First operand 11101 states and 18491 transitions. Second operand  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:23,695 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:18:23,695 INFO  L93              Difference]: Finished difference Result 47827 states and 79676 transitions.
[2023-11-29 00:18:23,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-11-29 00:18:23,696 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 0 states have call successors, (0), 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 7397
[2023-11-29 00:18:23,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:18:23,732 INFO  L225             Difference]: With dead ends: 47827
[2023-11-29 00:18:23,732 INFO  L226             Difference]: Without dead ends: 37446
[2023-11-29 00:18:23,744 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7419 GetRequests, 7397 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552
[2023-11-29 00:18:23,745 INFO  L413           NwaCegarLoop]: 26386 mSDtfsCounter, 125671 mSDsluCounter, 134238 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125671 SdHoareTripleChecker+Valid, 160624 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:18:23,745 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [125671 Valid, 160624 Invalid, 117 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 00:18:23,776 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37446 states.
[2023-11-29 00:18:23,960 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37446 to 16526.
[2023-11-29 00:18:23,975 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16526 states, 16525 states have (on average 1.6660816944024206) internal successors, (27532), 16525 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:23,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 27532 transitions.
[2023-11-29 00:18:23,995 INFO  L78                 Accepts]: Start accepts. Automaton has 16526 states and 27532 transitions. Word has length 7397
[2023-11-29 00:18:23,999 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:18:23,999 INFO  L495      AbstractCegarLoop]: Abstraction has 16526 states and 27532 transitions.
[2023-11-29 00:18:24,001 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:24,001 INFO  L276                IsEmpty]: Start isEmpty. Operand 16526 states and 27532 transitions.
[2023-11-29 00:18:24,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7399
[2023-11-29 00:18:24,235 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:18:24,237 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:24,358 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 00:18:24,437 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 00:18:24,438 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:18:24,438 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:18:24,440 INFO  L85        PathProgramCache]: Analyzing trace with hash -1575431689, now seen corresponding path program 1 times
[2023-11-29 00:18:24,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:18:24,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887627165]
[2023-11-29 00:18:24,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:24,441 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:18:25,119 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:18:25,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844945834]
[2023-11-29 00:18:25,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:25,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:18:25,122 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:18:25,122 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:18:25,125 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 00:18:34,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:18:34,884 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37080 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:18:35,006 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:18:35,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:18:35,731 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:18:35,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:18:35,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887627165]
[2023-11-29 00:18:35,731 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:18:35,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844945834]
[2023-11-29 00:18:35,732 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [844945834] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:18:35,732 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:18:35,734 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:18:35,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360192269]
[2023-11-29 00:18:35,735 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:18:35,738 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:18:35,739 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:18:35,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:18:35,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:18:35,745 INFO  L87              Difference]: Start difference. First operand 16526 states and 27532 transitions. Second operand  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:36,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:18:36,515 INFO  L93              Difference]: Finished difference Result 42882 states and 71439 transitions.
[2023-11-29 00:18:36,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 00:18:36,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 0 states have call successors, (0), 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 7398
[2023-11-29 00:18:36,521 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:18:36,544 INFO  L225             Difference]: With dead ends: 42882
[2023-11-29 00:18:36,545 INFO  L226             Difference]: Without dead ends: 26891
[2023-11-29 00:18:36,556 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7406 GetRequests, 7395 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-11-29 00:18:36,557 INFO  L413           NwaCegarLoop]: 26386 mSDtfsCounter, 44126 mSDsluCounter, 97305 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44126 SdHoareTripleChecker+Valid, 123691 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:18:36,557 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44126 Valid, 123691 Invalid, 54 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:18:36,584 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26891 states.
[2023-11-29 00:18:36,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26891 to 16528.
[2023-11-29 00:18:36,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16528 states, 16527 states have (on average 1.6660010891268833) internal successors, (27534), 16527 states have internal predecessors, (27534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:36,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16528 states to 16528 states and 27534 transitions.
[2023-11-29 00:18:36,787 INFO  L78                 Accepts]: Start accepts. Automaton has 16528 states and 27534 transitions. Word has length 7398
[2023-11-29 00:18:36,789 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:18:36,789 INFO  L495      AbstractCegarLoop]: Abstraction has 16528 states and 27534 transitions.
[2023-11-29 00:18:36,791 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:18:36,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 16528 states and 27534 transitions.
[2023-11-29 00:18:37,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7400
[2023-11-29 00:18:37,169 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:18:37,170 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:37,273 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 00:18:37,371 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 00:18:37,371 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:18:37,371 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:18:37,373 INFO  L85        PathProgramCache]: Analyzing trace with hash 1758942673, now seen corresponding path program 1 times
[2023-11-29 00:18:37,373 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:18:37,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460975626]
[2023-11-29 00:18:37,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:37,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:18:38,121 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:18:38,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366928044]
[2023-11-29 00:18:38,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:18:38,123 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:18:38,123 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:18:38,124 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:18:38,125 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 00:18:47,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:18:47,639 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37083 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 00:18:47,717 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:18:49,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:18:49,262 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:18:49,262 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:18:49,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460975626]
[2023-11-29 00:18:49,263 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:18:49,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366928044]
[2023-11-29 00:18:49,263 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [366928044] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:18:49,263 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:18:49,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 00:18:49,265 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164167320]
[2023-11-29 00:18:49,266 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:18:49,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:18:49,271 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:18:49,277 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:18:49,277 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 00:18:49,279 INFO  L87              Difference]: Start difference. First operand 16528 states and 27534 transitions. Second operand  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:00,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:19:00,600 INFO  L93              Difference]: Finished difference Result 38013 states and 63329 transitions.
[2023-11-29 00:19:00,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:19:00,602 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 0 states have call successors, (0), 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 7399
[2023-11-29 00:19:00,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:19:00,620 INFO  L225             Difference]: With dead ends: 38013
[2023-11-29 00:19:00,620 INFO  L226             Difference]: Without dead ends: 22020
[2023-11-29 00:19:00,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7400 GetRequests, 7395 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 00:19:00,630 INFO  L413           NwaCegarLoop]: 25497 mSDtfsCounter, 8800 mSDsluCounter, 59348 mSDsCounter, 0 mSdLazyCounter, 15292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8800 SdHoareTripleChecker+Valid, 84845 SdHoareTripleChecker+Invalid, 15292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2023-11-29 00:19:00,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8800 Valid, 84845 Invalid, 15292 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15292 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2023-11-29 00:19:00,651 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22020 states.
[2023-11-29 00:19:00,787 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 17070.
[2023-11-29 00:19:00,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17070 states, 17069 states have (on average 1.665885523463589) internal successors, (28435), 17069 states have internal predecessors, (28435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:00,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 28435 transitions.
[2023-11-29 00:19:00,821 INFO  L78                 Accepts]: Start accepts. Automaton has 17070 states and 28435 transitions. Word has length 7399
[2023-11-29 00:19:00,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:19:00,823 INFO  L495      AbstractCegarLoop]: Abstraction has 17070 states and 28435 transitions.
[2023-11-29 00:19:00,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:00,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 17070 states and 28435 transitions.
[2023-11-29 00:19:01,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7401
[2023-11-29 00:19:01,057 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:19:01,059 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:01,161 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 00:19:01,259 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 00:19:01,260 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:19:01,260 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:19:01,262 INFO  L85        PathProgramCache]: Analyzing trace with hash 473957739, now seen corresponding path program 1 times
[2023-11-29 00:19:01,262 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:19:01,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132741560]
[2023-11-29 00:19:01,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:19:01,264 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:19:01,984 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:19:01,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054321282]
[2023-11-29 00:19:01,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:19:01,986 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:19:01,987 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:19:01,987 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:19:01,992 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 00:19:10,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:19:11,107 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37086 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 00:19:11,197 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:19:23,687 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:19:23,687 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:19:23,687 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:19:23,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132741560]
[2023-11-29 00:19:23,687 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:19:23,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054321282]
[2023-11-29 00:19:23,687 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054321282] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:19:23,687 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:19:23,689 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-29 00:19:23,689 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615191488]
[2023-11-29 00:19:23,689 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:19:23,693 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 00:19:23,693 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:19:23,697 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 00:19:23,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-29 00:19:23,698 INFO  L87              Difference]: Start difference. First operand 17070 states and 28435 transitions. Second operand  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:40,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:19:40,221 INFO  L93              Difference]: Finished difference Result 44592 states and 74286 transitions.
[2023-11-29 00:19:40,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 00:19:40,224 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 0 states have call successors, (0), 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 7400
[2023-11-29 00:19:40,229 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:19:40,293 INFO  L225             Difference]: With dead ends: 44592
[2023-11-29 00:19:40,294 INFO  L226             Difference]: Without dead ends: 28057
[2023-11-29 00:19:40,298 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7401 GetRequests, 7394 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-11-29 00:19:40,299 INFO  L413           NwaCegarLoop]: 25497 mSDtfsCounter, 6944 mSDsluCounter, 79944 mSDsCounter, 0 mSdLazyCounter, 22016 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6944 SdHoareTripleChecker+Valid, 105441 SdHoareTripleChecker+Invalid, 22018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time
[2023-11-29 00:19:40,299 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6944 Valid, 105441 Invalid, 22018 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 22016 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time]
[2023-11-29 00:19:40,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28057 states.
[2023-11-29 00:19:40,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28057 to 23715.
[2023-11-29 00:19:40,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23715 states, 23714 states have (on average 1.665767057434427) internal successors, (39502), 23714 states have internal predecessors, (39502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:40,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23715 states to 23715 states and 39502 transitions.
[2023-11-29 00:19:40,549 INFO  L78                 Accepts]: Start accepts. Automaton has 23715 states and 39502 transitions. Word has length 7400
[2023-11-29 00:19:40,552 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:19:40,552 INFO  L495      AbstractCegarLoop]: Abstraction has 23715 states and 39502 transitions.
[2023-11-29 00:19:40,554 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:19:40,554 INFO  L276                IsEmpty]: Start isEmpty. Operand 23715 states and 39502 transitions.
[2023-11-29 00:19:40,780 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7401
[2023-11-29 00:19:40,780 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:19:40,782 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:40,877 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 00:19:40,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 00:19:40,982 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:19:40,983 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:19:40,984 INFO  L85        PathProgramCache]: Analyzing trace with hash 927904237, now seen corresponding path program 1 times
[2023-11-29 00:19:40,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:19:40,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577740351]
[2023-11-29 00:19:40,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:19:40,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:19:41,665 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:19:41,665 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407223998]
[2023-11-29 00:19:41,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:19:41,666 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:19:41,666 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:19:41,667 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:19:41,668 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 00:19:50,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:19:50,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37087 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 00:19:51,057 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:20:01,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:20:01,256 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:20:01,256 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:20:01,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577740351]
[2023-11-29 00:20:01,256 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:20:01,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407223998]
[2023-11-29 00:20:01,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407223998] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:20:01,257 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:20:01,259 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 00:20:01,260 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880184115]
[2023-11-29 00:20:01,260 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:20:01,263 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:20:01,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:20:01,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:20:01,268 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 00:20:01,270 INFO  L87              Difference]: Start difference. First operand 23715 states and 39502 transitions. Second operand  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:20:15,622 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:20:15,622 INFO  L93              Difference]: Finished difference Result 51846 states and 86362 transitions.
[2023-11-29 00:20:15,623 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 00:20:15,624 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 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 7400
[2023-11-29 00:20:15,629 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:20:15,651 INFO  L225             Difference]: With dead ends: 51846
[2023-11-29 00:20:15,651 INFO  L226             Difference]: Without dead ends: 28666
[2023-11-29 00:20:15,664 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7401 GetRequests, 7395 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 00:20:15,665 INFO  L413           NwaCegarLoop]: 19971 mSDtfsCounter, 24206 mSDsluCounter, 53172 mSDsCounter, 0 mSdLazyCounter, 24275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24206 SdHoareTripleChecker+Valid, 73143 SdHoareTripleChecker+Invalid, 24277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time
[2023-11-29 00:20:15,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24206 Valid, 73143 Invalid, 24277 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 24275 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time]
[2023-11-29 00:20:15,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28666 states.
[2023-11-29 00:20:15,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28666 to 26492.
[2023-11-29 00:20:15,992 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26492 states, 26491 states have (on average 1.6657732814918274) internal successors, (44128), 26491 states have internal predecessors, (44128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:20:16,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26492 states to 26492 states and 44128 transitions.
[2023-11-29 00:20:16,020 INFO  L78                 Accepts]: Start accepts. Automaton has 26492 states and 44128 transitions. Word has length 7400
[2023-11-29 00:20:16,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:20:16,023 INFO  L495      AbstractCegarLoop]: Abstraction has 26492 states and 44128 transitions.
[2023-11-29 00:20:16,025 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:20:16,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 26492 states and 44128 transitions.
[2023-11-29 00:20:16,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7402
[2023-11-29 00:20:16,256 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:20:16,258 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:20:16,356 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 00:20:16,458 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 00:20:16,459 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:20:16,460 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:20:16,463 INFO  L85        PathProgramCache]: Analyzing trace with hash -382151035, now seen corresponding path program 1 times
[2023-11-29 00:20:16,463 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:20:16,463 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459935240]
[2023-11-29 00:20:16,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:20:16,464 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:20:17,097 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:20:17,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239147913]
[2023-11-29 00:20:17,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:20:17,099 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:20:17,099 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:20:17,100 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:20:17,101 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 00:20:26,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:20:27,147 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37089 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-11-29 00:20:27,236 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:20:30,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:20:30,947 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:20:30,947 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:20:30,947 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459935240]
[2023-11-29 00:20:30,947 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:20:30,947 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239147913]
[2023-11-29 00:20:30,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [239147913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:20:30,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:20:30,950 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-29 00:20:30,950 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492536419]
[2023-11-29 00:20:30,950 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:20:30,954 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-29 00:20:30,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:20:30,958 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-29 00:20:30,958 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2023-11-29 00:20:30,960 INFO  L87              Difference]: Start difference. First operand 26492 states and 44128 transitions. Second operand  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:22:26,474 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:22:26,475 INFO  L93              Difference]: Finished difference Result 219607 states and 365769 transitions.
[2023-11-29 00:22:26,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2023-11-29 00:22:26,476 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 0 states have call successors, (0), 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 7401
[2023-11-29 00:22:26,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:22:26,594 INFO  L225             Difference]: With dead ends: 219607
[2023-11-29 00:22:26,594 INFO  L226             Difference]: Without dead ends: 193650
[2023-11-29 00:22:26,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7459 GetRequests, 7398 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=3261, Unknown=0, NotChecked=0, Total=3906
[2023-11-29 00:22:26,617 INFO  L413           NwaCegarLoop]: 55620 mSDtfsCounter, 220993 mSDsluCounter, 488698 mSDsCounter, 0 mSdLazyCounter, 214397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220993 SdHoareTripleChecker+Valid, 544318 SdHoareTripleChecker+Invalid, 214400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.4s IncrementalHoareTripleChecker+Time
[2023-11-29 00:22:26,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [220993 Valid, 544318 Invalid, 214400 Unknown, 0 Unchecked, 2.1s Time], IncrementalHoareTripleChecker [3 Valid, 214397 Invalid, 0 Unknown, 0 Unchecked, 105.4s Time]
[2023-11-29 00:22:26,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193650 states.
[2023-11-29 00:22:27,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193650 to 26512.
[2023-11-29 00:22:27,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26512 states, 26511 states have (on average 1.6653841801516351) internal successors, (44151), 26511 states have internal predecessors, (44151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:22:27,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26512 states to 26512 states and 44151 transitions.
[2023-11-29 00:22:27,703 INFO  L78                 Accepts]: Start accepts. Automaton has 26512 states and 44151 transitions. Word has length 7401
[2023-11-29 00:22:27,705 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:22:27,705 INFO  L495      AbstractCegarLoop]: Abstraction has 26512 states and 44151 transitions.
[2023-11-29 00:22:27,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:22:27,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 26512 states and 44151 transitions.
[2023-11-29 00:22:27,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7402
[2023-11-29 00:22:27,993 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:22:27,995 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:28,118 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 00:22:28,196 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:22:28,196 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:22:28,196 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:22:28,198 INFO  L85        PathProgramCache]: Analyzing trace with hash 918710597, now seen corresponding path program 1 times
[2023-11-29 00:22:28,198 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:22:28,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151904914]
[2023-11-29 00:22:28,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:22:28,199 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:22:28,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:22:28,825 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852904707]
[2023-11-29 00:22:28,826 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:22:28,826 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:22:28,826 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:22:28,827 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:22:28,828 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 00:22:38,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:22:38,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37091 conjuncts, 70 conjunts are in the unsatisfiable core
[2023-11-29 00:22:38,772 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:22:50,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:22:50,148 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:22:50,148 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:22:50,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151904914]
[2023-11-29 00:22:50,148 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:22:50,149 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852904707]
[2023-11-29 00:22:50,149 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [852904707] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:22:50,149 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:22:50,151 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2023-11-29 00:22:50,151 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450607678]
[2023-11-29 00:22:50,151 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:22:50,154 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2023-11-29 00:22:50,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:22:50,159 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2023-11-29 00:22:50,159 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702
[2023-11-29 00:22:50,161 INFO  L87              Difference]: Start difference. First operand 26512 states and 44151 transitions. Second operand  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:23:11,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:23:11,543 INFO  L93              Difference]: Finished difference Result 451213 states and 751387 transitions.
[2023-11-29 00:23:11,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. 
[2023-11-29 00:23:11,544 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 0 states have call successors, (0), 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 7401
[2023-11-29 00:23:11,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:23:12,040 INFO  L225             Difference]: With dead ends: 451213
[2023-11-29 00:23:12,040 INFO  L226             Difference]: Without dead ends: 425236
[2023-11-29 00:23:12,102 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7638 GetRequests, 7401 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24456 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=10157, Invalid=46725, Unknown=0, NotChecked=0, Total=56882
[2023-11-29 00:23:12,103 INFO  L413           NwaCegarLoop]: 34992 mSDtfsCounter, 1724045 mSDsluCounter, 747517 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724045 SdHoareTripleChecker+Valid, 782509 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.8s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:23:12,103 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1724045 Valid, 782509 Invalid, 1594 Unknown, 0 Unchecked, 2.8s Time], IncrementalHoareTripleChecker [125 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2023-11-29 00:23:12,298 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 425236 states.
[2023-11-29 00:23:13,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 425236 to 47016.
[2023-11-29 00:23:13,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47016 states, 47015 states have (on average 1.6651706902052537) internal successors, (78288), 47015 states have internal predecessors, (78288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:23:13,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47016 states to 47016 states and 78288 transitions.
[2023-11-29 00:23:13,958 INFO  L78                 Accepts]: Start accepts. Automaton has 47016 states and 78288 transitions. Word has length 7401
[2023-11-29 00:23:13,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:23:13,961 INFO  L495      AbstractCegarLoop]: Abstraction has 47016 states and 78288 transitions.
[2023-11-29 00:23:13,963 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:23:13,963 INFO  L276                IsEmpty]: Start isEmpty. Operand 47016 states and 78288 transitions.
[2023-11-29 00:23:14,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7403
[2023-11-29 00:23:14,411 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:23:14,413 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:23:14,540 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 00:23:14,613 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:23:14,613 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:23:14,614 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:23:14,615 INFO  L85        PathProgramCache]: Analyzing trace with hash -1228868471, now seen corresponding path program 1 times
[2023-11-29 00:23:14,615 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:23:14,615 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294183163]
[2023-11-29 00:23:14,617 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:23:14,617 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:23:15,278 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:23:15,278 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963329031]
[2023-11-29 00:23:15,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:23:15,279 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:23:15,279 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:23:15,280 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:23:15,281 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 00:23:25,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:23:25,400 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37094 conjuncts, 40 conjunts are in the unsatisfiable core
[2023-11-29 00:23:25,490 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:23:36,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked.
[2023-11-29 00:23:36,032 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:23:55,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 127 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:23:55,043 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:23:55,044 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294183163]
[2023-11-29 00:23:55,044 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:23:55,044 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963329031]
[2023-11-29 00:23:55,044 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [963329031] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 00:23:55,044 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 00:23:55,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22
[2023-11-29 00:23:55,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926103280]
[2023-11-29 00:23:55,049 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 00:23:55,057 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-11-29 00:23:55,058 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:23:55,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-11-29 00:23:55,065 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506
[2023-11-29 00:23:55,069 INFO  L87              Difference]: Start difference. First operand 47016 states and 78288 transitions. Second operand  has 23 states, 23 states have (on average 638.0869565217391) internal successors, (14676), 22 states have internal predecessors, (14676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:30,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:25:30,088 INFO  L93              Difference]: Finished difference Result 326066 states and 542928 transitions.
[2023-11-29 00:25:30,089 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-11-29 00:25:30,091 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 23 states have (on average 638.0869565217391) internal successors, (14676), 22 states have internal predecessors, (14676), 0 states have call successors, (0), 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 7402
[2023-11-29 00:25:30,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:25:30,282 INFO  L225             Difference]: With dead ends: 326066
[2023-11-29 00:25:30,282 INFO  L226             Difference]: Without dead ends: 279585
[2023-11-29 00:25:30,315 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 14830 GetRequests, 14781 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=626, Invalid=1924, Unknown=0, NotChecked=0, Total=2550
[2023-11-29 00:25:30,315 INFO  L413           NwaCegarLoop]: 38596 mSDtfsCounter, 218894 mSDsluCounter, 323565 mSDsCounter, 0 mSdLazyCounter, 135947 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218894 SdHoareTripleChecker+Valid, 362161 SdHoareTripleChecker+Invalid, 135950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:25:30,316 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [218894 Valid, 362161 Invalid, 135950 Unknown, 0 Unchecked, 1.4s Time], IncrementalHoareTripleChecker [3 Valid, 135947 Invalid, 0 Unknown, 0 Unchecked, 86.2s Time]
[2023-11-29 00:25:30,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 279585 states.
[2023-11-29 00:25:31,498 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 279585 to 47022.
[2023-11-29 00:25:31,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47022 states, 47021 states have (on average 1.665128346908828) internal successors, (78296), 47021 states have internal predecessors, (78296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:31,586 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47022 states to 47022 states and 78296 transitions.
[2023-11-29 00:25:31,586 INFO  L78                 Accepts]: Start accepts. Automaton has 47022 states and 78296 transitions. Word has length 7402
[2023-11-29 00:25:31,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:25:31,590 INFO  L495      AbstractCegarLoop]: Abstraction has 47022 states and 78296 transitions.
[2023-11-29 00:25:31,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 638.0869565217391) internal successors, (14676), 22 states have internal predecessors, (14676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:31,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 47022 states and 78296 transitions.
[2023-11-29 00:25:31,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7403
[2023-11-29 00:25:31,989 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:25:31,990 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:32,118 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 00:25:32,191 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:25:32,191 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:25:32,191 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:25:32,192 INFO  L85        PathProgramCache]: Analyzing trace with hash 1291091463, now seen corresponding path program 1 times
[2023-11-29 00:25:32,192 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:25:32,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374234821]
[2023-11-29 00:25:32,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:32,193 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:25:32,934 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:25:32,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257614301]
[2023-11-29 00:25:32,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:32,936 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:25:32,936 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:25:32,936 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:25:32,937 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b43d1-c77f-4126-8215-12b2d21e937f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 00:25:44,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:44,756 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37093 conjuncts, 166 conjunts are in the unsatisfiable core
[2023-11-29 00:25:45,032 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:26:07,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:26:07,245 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 00:26:07,246 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:26:07,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374234821]
[2023-11-29 00:26:07,246 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:26:07,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257614301]
[2023-11-29 00:26:07,246 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257614301] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:26:07,246 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:26:07,248 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2023-11-29 00:26:07,248 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113810529]
[2023-11-29 00:26:07,248 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:26:07,253 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2023-11-29 00:26:07,253 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:26:07,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2023-11-29 00:26:07,260 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=3064, Unknown=0, NotChecked=0, Total=3192
[2023-11-29 00:26:07,262 INFO  L87              Difference]: Start difference. First operand 47022 states and 78296 transitions. Second operand  has 57 states, 57 states have (on average 129.859649122807) internal successors, (7402), 57 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:14,828 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:27:14,829 INFO  L93              Difference]: Finished difference Result 526166 states and 875986 transitions.
[2023-11-29 00:27:14,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. 
[2023-11-29 00:27:14,831 INFO  L78                 Accepts]: Start accepts. Automaton has  has 57 states, 57 states have (on average 129.859649122807) internal successors, (7402), 57 states have internal predecessors, (7402), 0 states have call successors, (0), 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 7402
[2023-11-29 00:27:14,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:27:15,301 INFO  L225             Difference]: With dead ends: 526166
[2023-11-29 00:27:15,301 INFO  L226             Difference]: Without dead ends: 479679