./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/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 ba98d4a3488cd06cbfadbbd0a3214ae6b65c22e6a73ed4705251d3389591ddca
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 02:35:03,470 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 02:35:03,534 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 02:35:03,539 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 02:35:03,540 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 02:35:03,565 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 02:35:03,565 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 02:35:03,566 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 02:35:03,566 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 02:35:03,567 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 02:35:03,568 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 02:35:03,568 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 02:35:03,569 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 02:35:03,569 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 02:35:03,570 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 02:35:03,570 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 02:35:03,571 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 02:35:03,571 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 02:35:03,571 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 02:35:03,572 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 02:35:03,572 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 02:35:03,576 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 02:35:03,577 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 02:35:03,577 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 02:35:03,578 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 02:35:03,578 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 02:35:03,579 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 02:35:03,579 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 02:35:03,580 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:35:03,580 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 02:35:03,580 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 02:35:03,581 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 02:35:03,582 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 02:35:03,582 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 02:35:03,582 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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/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 -> ba98d4a3488cd06cbfadbbd0a3214ae6b65c22e6a73ed4705251d3389591ddca
[2023-11-29 02:35:03,789 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 02:35:03,811 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 02:35:03,814 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 02:35:03,815 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 02:35:03,816 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 02:35:03,817 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-11-29 02:35:06,667 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 02:35:07,187 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 02:35:07,188 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-11-29 02:35:07,252 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/data/2f9e9f4f8/09c3bccd5d2d435a9ec4d28f4e559d31/FLAG928b55f75
[2023-11-29 02:35:07,267 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/data/2f9e9f4f8/09c3bccd5d2d435a9ec4d28f4e559d31
[2023-11-29 02:35:07,270 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 02:35:07,272 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 02:35:07,274 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 02:35:07,274 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 02:35:07,280 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 02:35:07,281 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:35:07" (1/1) ...
[2023-11-29 02:35:07,282 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f83e917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:07, skipping insertion in model container
[2023-11-29 02:35:07,283 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:35:07" (1/1) ...
[2023-11-29 02:35:07,478 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 02:35:07,791 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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c[1179,1192]
[2023-11-29 02:35:08,980 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:35:08,990 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 02:35:09,003 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_100998aa-6fe2-45cc-ac8d-16579c8ceb78/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c[1179,1192]
[2023-11-29 02:35:09,985 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 02:35:09,998 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 02:35:09,998 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09 WrapperNode
[2023-11-29 02:35:09,998 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 02:35:09,999 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 02:35:09,999 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 02:35:09,999 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 02:35:10,007 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:10,376 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:13,181 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49604
[2023-11-29 02:35:13,182 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 02:35:13,182 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 02:35:13,183 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 02:35:13,183 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 02:35:13,193 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:13,194 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:13,995 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:14,465 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 02:35:14,465 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:14,465 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:15,266 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:15,380 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:15,518 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:15,644 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:16,315 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 02:35:16,317 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 02:35:16,317 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 02:35:16,317 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 02:35:16,318 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (1/1) ...
[2023-11-29 02:35:16,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 02:35:16,335 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:35:16,348 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 02:35:16,350 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 02:35:16,376 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 02:35:16,376 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 02:35:16,376 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 02:35:16,376 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 02:35:18,352 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 02:35:18,354 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 02:35:40,807 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 02:35:41,581 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 02:35:41,581 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 02:35:41,585 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:35:41 BoogieIcfgContainer
[2023-11-29 02:35:41,586 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 02:35:41,588 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 02:35:41,588 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 02:35:41,591 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 02:35:41,591 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:35:07" (1/3) ...
[2023-11-29 02:35:41,592 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ed8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:35:41, skipping insertion in model container
[2023-11-29 02:35:41,592 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:09" (2/3) ...
[2023-11-29 02:35:41,593 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ed8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:35:41, skipping insertion in model container
[2023-11-29 02:35:41,593 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:35:41" (3/3) ...
[2023-11-29 02:35:41,594 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-11-29 02:35:41,607 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 02:35:41,608 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 02:35:41,789 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 02:35:41,796 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;@7c560f92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 02:35:41,797 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 02:35:41,834 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:41,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2023-11-29 02:35:41,867 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:41,868 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:35:41,869 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:41,874 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:41,875 INFO  L85        PathProgramCache]: Analyzing trace with hash -2001547807, now seen corresponding path program 1 times
[2023-11-29 02:35:41,884 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:41,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427098356]
[2023-11-29 02:35:41,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:41,885 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:42,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:35:44,523 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 02:35:44,524 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:35:44,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427098356]
[2023-11-29 02:35:44,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427098356] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:35:44,525 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:35:44,525 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:35:44,527 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342923991]
[2023-11-29 02:35:44,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:35:44,534 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:35:44,534 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:35:44,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:35:44,566 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:35:44,593 INFO  L87              Difference]: Start difference. First operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:45,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:35:45,215 INFO  L93              Difference]: Finished difference Result 21220 states and 35376 transitions.
[2023-11-29 02:35:45,217 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:35:45,218 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488
[2023-11-29 02:35:45,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:35:45,300 INFO  L225             Difference]: With dead ends: 21220
[2023-11-29 02:35:45,301 INFO  L226             Difference]: Without dead ends: 10876
[2023-11-29 02:35:45,322 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 02:35:45,326 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54364 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:35:45,327 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54364 Invalid, 13 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:35:45,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10876 states.
[2023-11-29 02:35:45,612 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10876 to 10876.
[2023-11-29 02:35:45,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10876 states, 10875 states have (on average 1.666942528735632) internal successors, (18128), 10875 states have internal predecessors, (18128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:45,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 18128 transitions.
[2023-11-29 02:35:45,682 INFO  L78                 Accepts]: Start accepts. Automaton has 10876 states and 18128 transitions. Word has length 488
[2023-11-29 02:35:45,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:35:45,685 INFO  L495      AbstractCegarLoop]: Abstraction has 10876 states and 18128 transitions.
[2023-11-29 02:35:45,686 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:45,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 10876 states and 18128 transitions.
[2023-11-29 02:35:45,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 490
[2023-11-29 02:35:45,699 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:45,700 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 02:35:45,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 02:35:45,700 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:45,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:45,701 INFO  L85        PathProgramCache]: Analyzing trace with hash -1916652439, now seen corresponding path program 1 times
[2023-11-29 02:35:45,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:45,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463699708]
[2023-11-29 02:35:45,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:45,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:45,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:35:46,928 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 02:35:46,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:35:46,929 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463699708]
[2023-11-29 02:35:46,930 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463699708] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:35:46,930 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:35:46,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:35:46,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813520723]
[2023-11-29 02:35:46,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:35:46,933 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:35:46,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:35:46,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:35:46,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:35:46,935 INFO  L87              Difference]: Start difference. First operand 10876 states and 18128 transitions. Second operand  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:47,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:35:47,471 INFO  L93              Difference]: Finished difference Result 21223 states and 35374 transitions.
[2023-11-29 02:35:47,472 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:35:47,473 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 489
[2023-11-29 02:35:47,474 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:35:47,530 INFO  L225             Difference]: With dead ends: 21223
[2023-11-29 02:35:47,530 INFO  L226             Difference]: Without dead ends: 10879
[2023-11-29 02:35:47,542 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 02:35:47,543 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36239 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54362 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:35:47,544 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54362 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:35:47,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10879 states.
[2023-11-29 02:35:47,955 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 10878.
[2023-11-29 02:35:47,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10878 states, 10877 states have (on average 1.6668198951916888) internal successors, (18130), 10877 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:48,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 18130 transitions.
[2023-11-29 02:35:48,008 INFO  L78                 Accepts]: Start accepts. Automaton has 10878 states and 18130 transitions. Word has length 489
[2023-11-29 02:35:48,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:35:48,009 INFO  L495      AbstractCegarLoop]: Abstraction has 10878 states and 18130 transitions.
[2023-11-29 02:35:48,010 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:48,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 10878 states and 18130 transitions.
[2023-11-29 02:35:48,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-11-29 02:35:48,014 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:48,015 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 02:35:48,015 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 02:35:48,015 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:48,016 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:48,016 INFO  L85        PathProgramCache]: Analyzing trace with hash 501099513, now seen corresponding path program 1 times
[2023-11-29 02:35:48,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:48,017 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949218735]
[2023-11-29 02:35:48,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:48,017 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:48,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:35:49,244 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 02:35:49,245 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:35:49,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949218735]
[2023-11-29 02:35:49,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949218735] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:35:49,245 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:35:49,246 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 02:35:49,246 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178774806]
[2023-11-29 02:35:49,246 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:35:49,247 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:35:49,248 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:35:49,249 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:35:49,249 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:35:49,250 INFO  L87              Difference]: Start difference. First operand 10878 states and 18130 transitions. 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 02:35:49,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:35:49,856 INFO  L93              Difference]: Finished difference Result 31560 states and 52603 transitions.
[2023-11-29 02:35:49,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:35:49,857 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 02:35:49,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:35:49,909 INFO  L225             Difference]: With dead ends: 31560
[2023-11-29 02:35:49,909 INFO  L226             Difference]: Without dead ends: 21214
[2023-11-29 02:35:49,928 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 02:35:49,930 INFO  L413           NwaCegarLoop]: 18434 mSDtfsCounter, 17226 mSDsluCounter, 36546 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17226 SdHoareTripleChecker+Valid, 54980 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:35:49,931 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17226 Valid, 54980 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:35:49,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21214 states.
[2023-11-29 02:35:50,190 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21214 to 10880.
[2023-11-29 02:35:50,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10880 states, 10879 states have (on average 1.6666973067377517) internal successors, (18132), 10879 states have internal predecessors, (18132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:50,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 18132 transitions.
[2023-11-29 02:35:50,227 INFO  L78                 Accepts]: Start accepts. Automaton has 10880 states and 18132 transitions. Word has length 490
[2023-11-29 02:35:50,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:35:50,228 INFO  L495      AbstractCegarLoop]: Abstraction has 10880 states and 18132 transitions.
[2023-11-29 02:35:50,229 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 02:35:50,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 10880 states and 18132 transitions.
[2023-11-29 02:35:50,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-11-29 02:35:50,233 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:50,234 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 02:35:50,234 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 02:35:50,234 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:50,235 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:50,235 INFO  L85        PathProgramCache]: Analyzing trace with hash -47662065, now seen corresponding path program 1 times
[2023-11-29 02:35:50,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:50,236 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201195540]
[2023-11-29 02:35:50,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:50,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:50,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:35:51,353 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 02:35:51,354 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:35:51,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201195540]
[2023-11-29 02:35:51,354 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201195540] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:35:51,354 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:35:51,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:35:51,355 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711375480]
[2023-11-29 02:35:51,355 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:35:51,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:35:51,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:35:51,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:35:51,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:35:51,357 INFO  L87              Difference]: Start difference. First operand 10880 states and 18132 transitions. Second operand  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 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 02:35:52,041 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:35:52,042 INFO  L93              Difference]: Finished difference Result 31578 states and 52627 transitions.
[2023-11-29 02:35:52,042 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 02:35:52,042 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 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 02:35:52,043 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:35:52,090 INFO  L225             Difference]: With dead ends: 31578
[2023-11-29 02:35:52,091 INFO  L226             Difference]: Without dead ends: 21230
[2023-11-29 02:35:52,103 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 02:35:52,104 INFO  L413           NwaCegarLoop]: 18434 mSDtfsCounter, 34469 mSDsluCounter, 71897 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34469 SdHoareTripleChecker+Valid, 90331 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:35:52,104 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34469 Valid, 90331 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:35:52,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21230 states.
[2023-11-29 02:35:52,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 10883.
[2023-11-29 02:35:52,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10883 states, 10882 states have (on average 1.6666972982907553) internal successors, (18137), 10882 states have internal predecessors, (18137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:52,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 18137 transitions.
[2023-11-29 02:35:52,355 INFO  L78                 Accepts]: Start accepts. Automaton has 10883 states and 18137 transitions. Word has length 491
[2023-11-29 02:35:52,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:35:52,357 INFO  L495      AbstractCegarLoop]: Abstraction has 10883 states and 18137 transitions.
[2023-11-29 02:35:52,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 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 02:35:52,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 10883 states and 18137 transitions.
[2023-11-29 02:35:52,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 493
[2023-11-29 02:35:52,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:52,362 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 02:35:52,362 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 02:35:52,362 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:52,363 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:52,363 INFO  L85        PathProgramCache]: Analyzing trace with hash 32501587, now seen corresponding path program 1 times
[2023-11-29 02:35:52,363 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:52,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494695808]
[2023-11-29 02:35:52,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:52,364 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:52,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:35:53,345 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 02:35:53,346 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:35:53,346 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494695808]
[2023-11-29 02:35:53,346 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494695808] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:35:53,346 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:35:53,347 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:35:53,347 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456629297]
[2023-11-29 02:35:53,347 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:35:53,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:35:53,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:35:53,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:35:53,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:35:53,350 INFO  L87              Difference]: Start difference. First operand 10883 states and 18137 transitions. Second operand  has 6 states, 6 states have (on average 82.0) 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 02:35:54,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:35:54,267 INFO  L93              Difference]: Finished difference Result 31755 states and 52924 transitions.
[2023-11-29 02:35:54,267 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:35:54,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 82.0) 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 02:35:54,269 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:35:54,304 INFO  L225             Difference]: With dead ends: 31755
[2023-11-29 02:35:54,304 INFO  L226             Difference]: Without dead ends: 21404
[2023-11-29 02:35:54,316 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 02:35:54,317 INFO  L413           NwaCegarLoop]: 18424 mSDtfsCounter, 69641 mSDsluCounter, 53459 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69641 SdHoareTripleChecker+Valid, 71883 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 02:35:54,318 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69641 Valid, 71883 Invalid, 30 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:35:54,342 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21404 states.
[2023-11-29 02:35:54,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21404 to 11068.
[2023-11-29 02:35:54,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11068 states, 11067 states have (on average 1.6665763079425318) internal successors, (18444), 11067 states have internal predecessors, (18444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:35:54,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11068 states to 11068 states and 18444 transitions.
[2023-11-29 02:35:54,574 INFO  L78                 Accepts]: Start accepts. Automaton has 11068 states and 18444 transitions. Word has length 492
[2023-11-29 02:35:54,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:35:54,576 INFO  L495      AbstractCegarLoop]: Abstraction has 11068 states and 18444 transitions.
[2023-11-29 02:35:54,576 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 82.0) 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 02:35:54,576 INFO  L276                IsEmpty]: Start isEmpty. Operand 11068 states and 18444 transitions.
[2023-11-29 02:35:54,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-11-29 02:35:54,960 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:35:54,964 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]
[2023-11-29 02:35:54,965 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 02:35:54,965 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:35:54,965 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:35:54,968 INFO  L85        PathProgramCache]: Analyzing trace with hash -1869277280, now seen corresponding path program 1 times
[2023-11-29 02:35:54,968 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:35:54,968 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395504753]
[2023-11-29 02:35:54,969 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:54,969 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:35:55,877 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:35:55,877 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917678414]
[2023-11-29 02:35:55,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:35:55,879 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:35:55,879 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:35:55,880 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:35:55,883 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 02:36:05,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:36:05,664 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36908 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 02:36:05,848 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:36:06,217 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 02:36:06,218 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:36:06,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:36:06,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395504753]
[2023-11-29 02:36:06,218 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:36:06,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917678414]
[2023-11-29 02:36:06,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917678414] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:36:06,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:36:06,221 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:36:06,221 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065341234]
[2023-11-29 02:36:06,221 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:36:06,232 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 02:36:06,233 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:36:06,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 02:36:06,241 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 02:36:06,244 INFO  L87              Difference]: Start difference. First operand 11068 states and 18444 transitions. Second operand  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:06,448 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:36:06,448 INFO  L93              Difference]: Finished difference Result 21424 states and 35703 transitions.
[2023-11-29 02:36:06,449 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 02:36:06,451 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7367
[2023-11-29 02:36:06,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:36:06,464 INFO  L225             Difference]: With dead ends: 21424
[2023-11-29 02:36:06,464 INFO  L226             Difference]: Without dead ends: 11073
[2023-11-29 02:36:06,475 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7366 GetRequests, 7365 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 02:36:06,476 INFO  L413           NwaCegarLoop]: 18124 mSDtfsCounter, 6 mSDsluCounter, 18119 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36243 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:36:06,477 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36243 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:36:06,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11073 states.
[2023-11-29 02:36:06,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 11069.
[2023-11-29 02:36:06,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666516082399711) internal successors, (18445), 11068 states have internal predecessors, (18445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:06,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18445 transitions.
[2023-11-29 02:36:06,625 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18445 transitions. Word has length 7367
[2023-11-29 02:36:06,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:36:06,627 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18445 transitions.
[2023-11-29 02:36:06,629 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:06,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18445 transitions.
[2023-11-29 02:36:06,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-11-29 02:36:06,912 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:36:06,916 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 02:36:07,021 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 02:36:07,116 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:36:07,117 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:36:07,117 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:36:07,121 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973174418, now seen corresponding path program 1 times
[2023-11-29 02:36:07,122 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:36:07,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617162769]
[2023-11-29 02:36:07,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:07,123 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:36:07,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:36:07,929 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567958219]
[2023-11-29 02:36:07,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:07,931 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:36:07,932 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:36:07,933 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:36:07,934 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 02:36:17,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:36:17,938 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36909 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:36:18,068 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:36:20,739 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 02:36:20,739 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:36:20,739 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:36:20,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617162769]
[2023-11-29 02:36:20,740 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:36:20,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567958219]
[2023-11-29 02:36:20,740 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567958219] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:36:20,740 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:36:20,741 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:36:20,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042490655]
[2023-11-29 02:36:20,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:36:20,750 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:36:20,751 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:36:20,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:36:20,756 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:36:20,758 INFO  L87              Difference]: Start difference. First operand 11069 states and 18445 transitions. Second operand  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:26,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:36:26,704 INFO  L93              Difference]: Finished difference Result 21998 states and 36656 transitions.
[2023-11-29 02:36:26,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:36:26,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7367
[2023-11-29 02:36:26,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:36:26,718 INFO  L225             Difference]: With dead ends: 21998
[2023-11-29 02:36:26,718 INFO  L226             Difference]: Without dead ends: 11646
[2023-11-29 02:36:26,724 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7367 GetRequests, 7364 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:36:26,725 INFO  L413           NwaCegarLoop]: 14041 mSDtfsCounter, 34502 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 6044 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34502 SdHoareTripleChecker+Valid, 15498 SdHoareTripleChecker+Invalid, 6044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-11-29 02:36:26,725 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34502 Valid, 15498 Invalid, 6044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6044 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-11-29 02:36:26,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11646 states.
[2023-11-29 02:36:26,836 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11646 to 11069.
[2023-11-29 02:36:26,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6664257318395375) internal successors, (18444), 11068 states have internal predecessors, (18444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:26,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18444 transitions.
[2023-11-29 02:36:26,866 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18444 transitions. Word has length 7367
[2023-11-29 02:36:26,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:36:26,868 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18444 transitions.
[2023-11-29 02:36:26,870 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:26,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18444 transitions.
[2023-11-29 02:36:27,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7369
[2023-11-29 02:36:27,177 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:36:27,181 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 02:36:27,286 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-29 02:36:27,382 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:36:27,382 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:36:27,383 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:36:27,386 INFO  L85        PathProgramCache]: Analyzing trace with hash -572587704, now seen corresponding path program 1 times
[2023-11-29 02:36:27,386 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:36:27,386 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653595092]
[2023-11-29 02:36:27,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:27,387 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:36:28,242 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:36:28,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350122616]
[2023-11-29 02:36:28,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:28,245 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:36:28,245 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:36:28,246 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:36:28,248 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 02:36:37,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:36:38,169 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36910 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:36:38,341 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:36:41,107 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 02:36:41,108 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:36:41,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:36:41,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653595092]
[2023-11-29 02:36:41,108 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:36:41,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350122616]
[2023-11-29 02:36:41,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [350122616] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:36:41,108 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:36:41,110 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:36:41,110 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002656573]
[2023-11-29 02:36:41,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:36:41,117 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:36:41,117 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:36:41,123 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:36:41,123 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:36:41,125 INFO  L87              Difference]: Start difference. First operand 11069 states and 18444 transitions. Second operand  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:46,822 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:36:46,822 INFO  L93              Difference]: Finished difference Result 22011 states and 36675 transitions.
[2023-11-29 02:36:46,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:36:46,824 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7368
[2023-11-29 02:36:46,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:36:46,834 INFO  L225             Difference]: With dead ends: 22011
[2023-11-29 02:36:46,834 INFO  L226             Difference]: Without dead ends: 11659
[2023-11-29 02:36:46,838 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7368 GetRequests, 7365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:36:46,838 INFO  L413           NwaCegarLoop]: 14060 mSDtfsCounter, 34491 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34491 SdHoareTripleChecker+Valid, 15537 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-11-29 02:36:46,839 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34491 Valid, 15537 Invalid, 6046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-11-29 02:36:46,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11659 states.
[2023-11-29 02:36:46,959 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 11069.
[2023-11-29 02:36:46,971 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666335381279364) internal successors, (18443), 11068 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:46,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18443 transitions.
[2023-11-29 02:36:46,991 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18443 transitions. Word has length 7368
[2023-11-29 02:36:46,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:36:46,993 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18443 transitions.
[2023-11-29 02:36:46,995 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:36:46,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18443 transitions.
[2023-11-29 02:36:47,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7370
[2023-11-29 02:36:47,260 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:36:47,264 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 02:36:47,368 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-29 02:36:47,465 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-29 02:36:47,465 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:36:47,466 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:36:47,468 INFO  L85        PathProgramCache]: Analyzing trace with hash 1236146415, now seen corresponding path program 1 times
[2023-11-29 02:36:47,468 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:36:47,468 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944213342]
[2023-11-29 02:36:47,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:47,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:36:48,266 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:36:48,266 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771523351]
[2023-11-29 02:36:48,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:36:48,268 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:36:48,268 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:36:48,269 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:36:48,270 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 02:36:57,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:36:58,009 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36911 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:36:58,186 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:37:00,802 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 02:37:00,802 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:37:00,802 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:37:00,802 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944213342]
[2023-11-29 02:37:00,802 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:37:00,802 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771523351]
[2023-11-29 02:37:00,802 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [771523351] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:37:00,802 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:37:00,804 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:37:00,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027799334]
[2023-11-29 02:37:00,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:37:00,814 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:37:00,814 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:37:00,823 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:37:00,823 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:37:00,825 INFO  L87              Difference]: Start difference. First operand 11069 states and 18443 transitions. Second operand  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:06,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:37:06,613 INFO  L93              Difference]: Finished difference Result 22027 states and 36699 transitions.
[2023-11-29 02:37:06,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:37:06,615 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7369
[2023-11-29 02:37:06,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:37:06,626 INFO  L225             Difference]: With dead ends: 22027
[2023-11-29 02:37:06,626 INFO  L226             Difference]: Without dead ends: 11675
[2023-11-29 02:37:06,633 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7369 GetRequests, 7366 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:37:06,634 INFO  L413           NwaCegarLoop]: 14084 mSDtfsCounter, 34478 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34478 SdHoareTripleChecker+Valid, 15586 SdHoareTripleChecker+Invalid, 6048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:37:06,635 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34478 Valid, 15586 Invalid, 6048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6048 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 02:37:06,648 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11675 states.
[2023-11-29 02:37:06,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 11069.
[2023-11-29 02:37:06,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6662450307191905) internal successors, (18442), 11068 states have internal predecessors, (18442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:06,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18442 transitions.
[2023-11-29 02:37:06,754 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18442 transitions. Word has length 7369
[2023-11-29 02:37:06,755 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:37:06,755 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18442 transitions.
[2023-11-29 02:37:06,757 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:06,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18442 transitions.
[2023-11-29 02:37:07,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7371
[2023-11-29 02:37:07,004 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:37:07,008 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 02:37:07,107 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 02:37:07,209 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-29 02:37:07,210 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:37:07,213 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:37:07,221 INFO  L85        PathProgramCache]: Analyzing trace with hash -858846421, now seen corresponding path program 1 times
[2023-11-29 02:37:07,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:37:07,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575362730]
[2023-11-29 02:37:07,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:07,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:37:07,906 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:37:07,906 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111662861]
[2023-11-29 02:37:07,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:07,908 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:37:07,908 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:37:07,909 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:37:07,910 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 02:37:17,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:37:17,708 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36912 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:37:18,005 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:37:20,184 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 02:37:20,185 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:37:20,185 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:37:20,185 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575362730]
[2023-11-29 02:37:20,185 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:37:20,185 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111662861]
[2023-11-29 02:37:20,185 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111662861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:37:20,185 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:37:20,186 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:37:20,186 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616306998]
[2023-11-29 02:37:20,186 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:37:20,192 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:37:20,192 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:37:20,198 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:37:20,198 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:37:20,200 INFO  L87              Difference]: Start difference. First operand 11069 states and 18442 transitions. Second operand  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:26,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:37:26,012 INFO  L93              Difference]: Finished difference Result 22034 states and 36708 transitions.
[2023-11-29 02:37:26,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:37:26,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7370
[2023-11-29 02:37:26,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:37:26,023 INFO  L225             Difference]: With dead ends: 22034
[2023-11-29 02:37:26,023 INFO  L226             Difference]: Without dead ends: 11682
[2023-11-29 02:37:26,028 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7370 GetRequests, 7367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:37:26,028 INFO  L413           NwaCegarLoop]: 14093 mSDtfsCounter, 34471 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 6050 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34471 SdHoareTripleChecker+Valid, 15605 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:37:26,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34471 Valid, 15605 Invalid, 6050 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 6050 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 02:37:26,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11682 states.
[2023-11-29 02:37:26,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11682 to 11069.
[2023-11-29 02:37:26,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666154680159017) internal successors, (18441), 11068 states have internal predecessors, (18441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:26,139 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18441 transitions.
[2023-11-29 02:37:26,139 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18441 transitions. Word has length 7370
[2023-11-29 02:37:26,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:37:26,141 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18441 transitions.
[2023-11-29 02:37:26,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:26,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18441 transitions.
[2023-11-29 02:37:26,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7372
[2023-11-29 02:37:26,355 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:37:26,359 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 02:37:26,462 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 02:37:26,559 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:37:26,560 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:37:26,560 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:37:26,563 INFO  L85        PathProgramCache]: Analyzing trace with hash 1476028416, now seen corresponding path program 1 times
[2023-11-29 02:37:26,563 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:37:26,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693889809]
[2023-11-29 02:37:26,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:26,565 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:37:27,292 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:37:27,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944801307]
[2023-11-29 02:37:27,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:27,294 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:37:27,294 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:37:27,295 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:37:27,296 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 02:37:36,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:37:36,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36913 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:37:36,852 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:37:39,235 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 02:37:39,235 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:37:39,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:37:39,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693889809]
[2023-11-29 02:37:39,236 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:37:39,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944801307]
[2023-11-29 02:37:39,236 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [944801307] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:37:39,236 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:37:39,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:37:39,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233417849]
[2023-11-29 02:37:39,237 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:37:39,245 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:37:39,245 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:37:39,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:37:39,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:37:39,255 INFO  L87              Difference]: Start difference. First operand 11069 states and 18441 transitions. Second operand  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:45,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:37:45,078 INFO  L93              Difference]: Finished difference Result 22038 states and 36712 transitions.
[2023-11-29 02:37:45,078 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:37:45,080 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7371
[2023-11-29 02:37:45,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:37:45,094 INFO  L225             Difference]: With dead ends: 22038
[2023-11-29 02:37:45,095 INFO  L226             Difference]: Without dead ends: 11686
[2023-11-29 02:37:45,102 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7371 GetRequests, 7368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:37:45,103 INFO  L413           NwaCegarLoop]: 14097 mSDtfsCounter, 34466 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34466 SdHoareTripleChecker+Valid, 15614 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:37:45,103 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34466 Valid, 15614 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6052 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 02:37:45,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11686 states.
[2023-11-29 02:37:45,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 11069.
[2023-11-29 02:37:45,358 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6660643295988435) internal successors, (18440), 11068 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:45,372 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18440 transitions.
[2023-11-29 02:37:45,373 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18440 transitions. Word has length 7371
[2023-11-29 02:37:45,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:37:45,375 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18440 transitions.
[2023-11-29 02:37:45,376 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:37:45,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18440 transitions.
[2023-11-29 02:37:45,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7373
[2023-11-29 02:37:45,599 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:37:45,602 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 02:37:45,710 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 02:37:45,802 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:37:45,802 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:37:45,803 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:37:45,805 INFO  L85        PathProgramCache]: Analyzing trace with hash -1290800778, now seen corresponding path program 1 times
[2023-11-29 02:37:45,806 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:37:45,806 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626962667]
[2023-11-29 02:37:45,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:45,807 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:37:46,505 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:37:46,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899075443]
[2023-11-29 02:37:46,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:37:46,506 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:37:46,507 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:37:46,507 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:37:46,510 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 02:37:56,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:37:56,362 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36914 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:37:56,471 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:37:58,993 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 02:37:58,993 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:37:58,993 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:37:58,993 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626962667]
[2023-11-29 02:37:58,994 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:37:58,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899075443]
[2023-11-29 02:37:58,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899075443] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:37:58,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:37:58,995 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:37:58,995 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377001834]
[2023-11-29 02:37:58,995 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:37:59,000 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:37:59,000 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:37:59,005 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:37:59,006 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:37:59,007 INFO  L87              Difference]: Start difference. First operand 11069 states and 18440 transitions. Second operand  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:04,924 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:38:04,924 INFO  L93              Difference]: Finished difference Result 22063 states and 36751 transitions.
[2023-11-29 02:38:04,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:38:04,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7372
[2023-11-29 02:38:04,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:38:04,938 INFO  L225             Difference]: With dead ends: 22063
[2023-11-29 02:38:04,938 INFO  L226             Difference]: Without dead ends: 11711
[2023-11-29 02:38:04,945 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7372 GetRequests, 7369 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:38:04,946 INFO  L413           NwaCegarLoop]: 14136 mSDtfsCounter, 34447 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 6054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34447 SdHoareTripleChecker+Valid, 15693 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:38:04,946 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34447 Valid, 15693 Invalid, 6054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6054 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 02:38:04,963 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11711 states.
[2023-11-29 02:38:05,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11711 to 11069.
[2023-11-29 02:38:05,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.66597397903867) internal successors, (18439), 11068 states have internal predecessors, (18439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:05,080 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18439 transitions.
[2023-11-29 02:38:05,080 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18439 transitions. Word has length 7372
[2023-11-29 02:38:05,082 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:38:05,082 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18439 transitions.
[2023-11-29 02:38:05,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:05,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18439 transitions.
[2023-11-29 02:38:05,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7374
[2023-11-29 02:38:05,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:38:05,391 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 02:38:05,501 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 02:38:05,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:05,592 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:38:05,593 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:38:05,596 INFO  L85        PathProgramCache]: Analyzing trace with hash -1173638667, now seen corresponding path program 1 times
[2023-11-29 02:38:05,596 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:38:05,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980136557]
[2023-11-29 02:38:05,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:05,597 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:38:06,338 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:38:06,338 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072157452]
[2023-11-29 02:38:06,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:06,341 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:06,342 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:38:06,342 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:38:06,343 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 02:38:16,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:38:16,544 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36915 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:38:16,654 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:38:19,032 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 02:38:19,032 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:38:19,032 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:38:19,032 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980136557]
[2023-11-29 02:38:19,032 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:38:19,033 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072157452]
[2023-11-29 02:38:19,033 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072157452] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:38:19,033 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:38:19,034 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:38:19,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686480858]
[2023-11-29 02:38:19,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:38:19,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:38:19,040 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:38:19,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:38:19,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:38:19,047 INFO  L87              Difference]: Start difference. First operand 11069 states and 18439 transitions. Second operand  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:24,963 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:38:24,963 INFO  L93              Difference]: Finished difference Result 22082 states and 36780 transitions.
[2023-11-29 02:38:24,963 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:38:24,965 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7373
[2023-11-29 02:38:24,965 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:38:24,973 INFO  L225             Difference]: With dead ends: 22082
[2023-11-29 02:38:24,973 INFO  L226             Difference]: Without dead ends: 11730
[2023-11-29 02:38:24,978 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7373 GetRequests, 7370 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 02:38:24,979 INFO  L413           NwaCegarLoop]: 14165 mSDtfsCounter, 34432 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34432 SdHoareTripleChecker+Valid, 15752 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:38:24,979 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34432 Valid, 15752 Invalid, 6056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 02:38:24,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11730 states.
[2023-11-29 02:38:25,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 11069.
[2023-11-29 02:38:25,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6658836284784966) internal successors, (18438), 11068 states have internal predecessors, (18438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:25,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18438 transitions.
[2023-11-29 02:38:25,087 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18438 transitions. Word has length 7373
[2023-11-29 02:38:25,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:38:25,088 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18438 transitions.
[2023-11-29 02:38:25,089 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:25,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18438 transitions.
[2023-11-29 02:38:25,325 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7375
[2023-11-29 02:38:25,325 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:38:25,327 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 02:38:25,436 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-11-29 02:38:25,527 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:25,528 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:38:25,528 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:38:25,531 INFO  L85        PathProgramCache]: Analyzing trace with hash 2043331135, now seen corresponding path program 1 times
[2023-11-29 02:38:25,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:38:25,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232442457]
[2023-11-29 02:38:25,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:25,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:38:26,311 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:38:26,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243617608]
[2023-11-29 02:38:26,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:26,313 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:26,313 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:38:26,314 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:38:26,315 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 02:38:35,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:38:35,854 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36916 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 02:38:35,961 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:38:38,536 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 02:38:38,536 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:38:38,536 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:38:38,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232442457]
[2023-11-29 02:38:38,537 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:38:38,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243617608]
[2023-11-29 02:38:38,537 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [243617608] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:38:38,537 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:38:38,539 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 02:38:38,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044210138]
[2023-11-29 02:38:38,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:38:38,544 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 02:38:38,544 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:38:38,549 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 02:38:38,550 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 02:38:38,552 INFO  L87              Difference]: Start difference. First operand 11069 states and 18438 transitions. Second operand  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:44,457 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:38:44,458 INFO  L93              Difference]: Finished difference Result 22095 states and 36799 transitions.
[2023-11-29 02:38:44,458 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 02:38:44,460 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7374
[2023-11-29 02:38:44,461 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:38:44,473 INFO  L225             Difference]: With dead ends: 22095
[2023-11-29 02:38:44,473 INFO  L226             Difference]: Without dead ends: 11743
[2023-11-29 02:38:44,480 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7374 GetRequests, 7371 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 02:38:44,481 INFO  L413           NwaCegarLoop]: 14184 mSDtfsCounter, 34421 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 6058 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34421 SdHoareTripleChecker+Valid, 15791 SdHoareTripleChecker+Invalid, 6058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-11-29 02:38:44,481 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34421 Valid, 15791 Invalid, 6058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6058 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-11-29 02:38:44,499 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11743 states.
[2023-11-29 02:38:44,625 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 11069.
[2023-11-29 02:38:44,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.665793277918323) internal successors, (18437), 11068 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:44,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18437 transitions.
[2023-11-29 02:38:44,657 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18437 transitions. Word has length 7374
[2023-11-29 02:38:44,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:38:44,658 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18437 transitions.
[2023-11-29 02:38:44,660 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:38:44,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18437 transitions.
[2023-11-29 02:38:44,974 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7376
[2023-11-29 02:38:44,974 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:38:44,976 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 02:38:45,086 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 02:38:45,176 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:45,177 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:38:45,178 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:38:45,181 INFO  L85        PathProgramCache]: Analyzing trace with hash -1746378414, now seen corresponding path program 1 times
[2023-11-29 02:38:45,182 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:38:45,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867086629]
[2023-11-29 02:38:45,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:45,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:38:45,950 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:38:45,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315529395]
[2023-11-29 02:38:45,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:38:45,952 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:38:45,952 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:38:45,953 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:38:45,954 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 02:38:55,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:38:55,776 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36917 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-29 02:38:55,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:38:59,955 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 02:38:59,956 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:38:59,956 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:38:59,956 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867086629]
[2023-11-29 02:38:59,956 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:38:59,956 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315529395]
[2023-11-29 02:38:59,956 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315529395] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:38:59,956 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:38:59,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-29 02:38:59,957 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284213702]
[2023-11-29 02:38:59,957 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:38:59,961 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-29 02:38:59,961 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:38:59,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-29 02:38:59,965 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-29 02:38:59,967 INFO  L87              Difference]: Start difference. First operand 11069 states and 18437 transitions. Second operand  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:01,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:39:01,333 INFO  L93              Difference]: Finished difference Result 47708 states and 79475 transitions.
[2023-11-29 02:39:01,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-11-29 02:39:01,335 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7375
[2023-11-29 02:39:01,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:39:01,370 INFO  L225             Difference]: With dead ends: 47708
[2023-11-29 02:39:01,370 INFO  L226             Difference]: Without dead ends: 37356
[2023-11-29 02:39:01,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7397 GetRequests, 7375 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 02:39:01,383 INFO  L413           NwaCegarLoop]: 26281 mSDtfsCounter, 125418 mSDsluCounter, 133758 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125418 SdHoareTripleChecker+Valid, 160039 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 02:39:01,384 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [125418 Valid, 160039 Invalid, 117 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-29 02:39:01,414 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37356 states.
[2023-11-29 02:39:01,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37356 to 16494.
[2023-11-29 02:39:01,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16494 states, 16493 states have (on average 1.6660401382404657) internal successors, (27478), 16493 states have internal predecessors, (27478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:01,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16494 states to 16494 states and 27478 transitions.
[2023-11-29 02:39:01,684 INFO  L78                 Accepts]: Start accepts. Automaton has 16494 states and 27478 transitions. Word has length 7375
[2023-11-29 02:39:01,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:39:01,688 INFO  L495      AbstractCegarLoop]: Abstraction has 16494 states and 27478 transitions.
[2023-11-29 02:39:01,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:01,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 16494 states and 27478 transitions.
[2023-11-29 02:39:01,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7377
[2023-11-29 02:39:01,902 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:39:01,903 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 02:39:02,030 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-29 02:39:02,104 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 02:39:02,104 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:39:02,104 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:39:02,106 INFO  L85        PathProgramCache]: Analyzing trace with hash -1968463152, now seen corresponding path program 1 times
[2023-11-29 02:39:02,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:39:02,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348068040]
[2023-11-29 02:39:02,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:02,108 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:39:02,797 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:39:02,797 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821550846]
[2023-11-29 02:39:02,798 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:02,798 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:39:02,799 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:39:02,799 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:39:02,800 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 02:39:11,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:39:12,027 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36920 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 02:39:12,127 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:39:12,545 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 02:39:12,545 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:39:12,545 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:39:12,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348068040]
[2023-11-29 02:39:12,545 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:39:12,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821550846]
[2023-11-29 02:39:12,545 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821550846] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:39:12,546 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:39:12,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 02:39:12,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851286644]
[2023-11-29 02:39:12,548 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:39:12,551 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 02:39:12,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:39:12,555 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 02:39:12,556 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 02:39:12,557 INFO  L87              Difference]: Start difference. First operand 16494 states and 27478 transitions. Second operand  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:13,415 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:39:13,415 INFO  L93              Difference]: Finished difference Result 42792 states and 71287 transitions.
[2023-11-29 02:39:13,416 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 02:39:13,417 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7376
[2023-11-29 02:39:13,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:39:13,442 INFO  L225             Difference]: With dead ends: 42792
[2023-11-29 02:39:13,442 INFO  L226             Difference]: Without dead ends: 26830
[2023-11-29 02:39:13,453 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7384 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 02:39:13,453 INFO  L413           NwaCegarLoop]: 26281 mSDtfsCounter, 44023 mSDsluCounter, 114144 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44023 SdHoareTripleChecker+Valid, 140425 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:39:13,453 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44023 Valid, 140425 Invalid, 59 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 02:39:13,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26830 states.
[2023-11-29 02:39:13,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26830 to 16496.
[2023-11-29 02:39:13,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16496 states, 16495 states have (on average 1.6659593816307972) internal successors, (27480), 16495 states have internal predecessors, (27480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:13,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 27480 transitions.
[2023-11-29 02:39:13,662 INFO  L78                 Accepts]: Start accepts. Automaton has 16496 states and 27480 transitions. Word has length 7376
[2023-11-29 02:39:13,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:39:13,664 INFO  L495      AbstractCegarLoop]: Abstraction has 16496 states and 27480 transitions.
[2023-11-29 02:39:13,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:13,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 16496 states and 27480 transitions.
[2023-11-29 02:39:13,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-11-29 02:39:13,990 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:39:13,991 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 02:39:14,095 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 02:39:14,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 02:39:14,192 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:39:14,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:39:14,194 INFO  L85        PathProgramCache]: Analyzing trace with hash -2129484042, now seen corresponding path program 1 times
[2023-11-29 02:39:14,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:39:14,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589800849]
[2023-11-29 02:39:14,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:14,195 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:39:14,849 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:39:14,849 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411748535]
[2023-11-29 02:39:14,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:14,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:39:14,851 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:39:14,852 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:39:14,852 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 02:39:24,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:39:24,283 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36924 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-29 02:39:24,380 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:39:37,471 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 02:39:37,471 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:39:37,471 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:39:37,472 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589800849]
[2023-11-29 02:39:37,472 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:39:37,472 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411748535]
[2023-11-29 02:39:37,472 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411748535] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:39:37,472 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:39:37,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:39:37,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547601896]
[2023-11-29 02:39:37,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:39:37,478 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:39:37,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:39:37,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:39:37,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:39:37,485 INFO  L87              Difference]: Start difference. First operand 16496 states and 27480 transitions. Second operand  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:49,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:39:49,560 INFO  L93              Difference]: Finished difference Result 37952 states and 63226 transitions.
[2023-11-29 02:39:49,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:39:49,562 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7377
[2023-11-29 02:39:49,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:39:49,579 INFO  L225             Difference]: With dead ends: 37952
[2023-11-29 02:39:49,579 INFO  L226             Difference]: Without dead ends: 21988
[2023-11-29 02:39:49,586 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7373 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 02:39:49,587 INFO  L413           NwaCegarLoop]: 25442 mSDtfsCounter, 6948 mSDsluCounter, 59223 mSDsCounter, 0 mSdLazyCounter, 15252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6948 SdHoareTripleChecker+Valid, 84665 SdHoareTripleChecker+Invalid, 15252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time
[2023-11-29 02:39:49,587 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6948 Valid, 84665 Invalid, 15252 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15252 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time]
[2023-11-29 02:39:49,602 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21988 states.
[2023-11-29 02:39:49,765 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21988 to 19816.
[2023-11-29 02:39:49,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19816 states, 19815 states have (on average 1.6659601312137269) internal successors, (33011), 19815 states have internal predecessors, (33011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:49,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19816 states to 19816 states and 33011 transitions.
[2023-11-29 02:39:49,803 INFO  L78                 Accepts]: Start accepts. Automaton has 19816 states and 33011 transitions. Word has length 7377
[2023-11-29 02:39:49,806 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:39:49,806 INFO  L495      AbstractCegarLoop]: Abstraction has 19816 states and 33011 transitions.
[2023-11-29 02:39:49,808 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:39:49,808 INFO  L276                IsEmpty]: Start isEmpty. Operand 19816 states and 33011 transitions.
[2023-11-29 02:39:50,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-11-29 02:39:50,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:39:50,025 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 02:39:50,130 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 02:39:50,225 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 02:39:50,226 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:39:50,226 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:39:50,227 INFO  L85        PathProgramCache]: Analyzing trace with hash 1641753536, now seen corresponding path program 1 times
[2023-11-29 02:39:50,227 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:39:50,227 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294847291]
[2023-11-29 02:39:50,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:50,229 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:39:51,127 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:39:51,128 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970993761]
[2023-11-29 02:39:51,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:39:51,129 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:39:51,130 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:39:51,130 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:39:51,131 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 02:40:00,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:40:00,682 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36928 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 02:40:00,777 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:40:05,984 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 02:40:05,984 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:40:05,984 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:40:05,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294847291]
[2023-11-29 02:40:05,984 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:40:05,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970993761]
[2023-11-29 02:40:05,984 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [970993761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:40:05,984 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:40:05,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 02:40:05,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502176903]
[2023-11-29 02:40:05,987 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:40:05,992 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 02:40:05,992 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:40:05,998 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 02:40:05,999 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-29 02:40:06,001 INFO  L87              Difference]: Start difference. First operand 19816 states and 33011 transitions. Second operand  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:40:18,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:40:18,462 INFO  L93              Difference]: Finished difference Result 49602 states and 82635 transitions.
[2023-11-29 02:40:18,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 02:40:18,464 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7378
[2023-11-29 02:40:18,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:40:18,488 INFO  L225             Difference]: With dead ends: 49602
[2023-11-29 02:40:18,489 INFO  L226             Difference]: Without dead ends: 24764
[2023-11-29 02:40:18,500 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7381 GetRequests, 7374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-11-29 02:40:18,501 INFO  L413           NwaCegarLoop]: 13280 mSDtfsCounter, 32278 mSDsluCounter, 39770 mSDsCounter, 0 mSdLazyCounter, 19750 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32278 SdHoareTripleChecker+Valid, 53050 SdHoareTripleChecker+Invalid, 19751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-11-29 02:40:18,501 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32278 Valid, 53050 Invalid, 19751 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 19750 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-11-29 02:40:18,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24764 states.
[2023-11-29 02:40:18,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24764 to 22593.
[2023-11-29 02:40:18,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22593 states, 22592 states have (on average 1.6658994334277621) internal successors, (37636), 22592 states have internal predecessors, (37636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:40:18,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 37636 transitions.
[2023-11-29 02:40:18,751 INFO  L78                 Accepts]: Start accepts. Automaton has 22593 states and 37636 transitions. Word has length 7378
[2023-11-29 02:40:18,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:40:18,754 INFO  L495      AbstractCegarLoop]: Abstraction has 22593 states and 37636 transitions.
[2023-11-29 02:40:18,755 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:40:18,755 INFO  L276                IsEmpty]: Start isEmpty. Operand 22593 states and 37636 transitions.
[2023-11-29 02:40:18,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-11-29 02:40:18,977 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:40:18,979 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 02:40:19,090 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 02:40:19,179 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 02:40:19,180 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:40:19,180 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:40:19,181 INFO  L85        PathProgramCache]: Analyzing trace with hash 1919544812, now seen corresponding path program 1 times
[2023-11-29 02:40:19,181 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:40:19,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96545110]
[2023-11-29 02:40:19,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:40:19,182 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:40:20,003 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:40:20,003 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762326444]
[2023-11-29 02:40:20,004 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:40:20,005 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:40:20,005 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:40:20,006 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:40:20,007 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 02:40:29,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:40:30,141 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36931 conjuncts, 74 conjunts are in the unsatisfiable core
[2023-11-29 02:40:30,250 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:41:04,502 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 02:41:04,502 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:41:04,502 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:41:04,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96545110]
[2023-11-29 02:41:04,502 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:41:04,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762326444]
[2023-11-29 02:41:04,502 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [762326444] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:41:04,502 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:41:04,503 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-11-29 02:41:04,504 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352745575]
[2023-11-29 02:41:04,504 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:41:04,507 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-11-29 02:41:04,507 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:41:04,511 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-11-29 02:41:04,512 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756
[2023-11-29 02:41:04,514 INFO  L87              Difference]: Start difference. First operand 22593 states and 37636 transitions. Second operand  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:41:25,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:41:25,568 INFO  L93              Difference]: Finished difference Result 261819 states and 436088 transitions.
[2023-11-29 02:41:25,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. 
[2023-11-29 02:41:25,570 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7379
[2023-11-29 02:41:25,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:41:25,759 INFO  L225             Difference]: With dead ends: 261819
[2023-11-29 02:41:25,759 INFO  L226             Difference]: Without dead ends: 239758
[2023-11-29 02:41:25,799 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7585 GetRequests, 7378 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17777 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7706, Invalid=35766, Unknown=0, NotChecked=0, Total=43472
[2023-11-29 02:41:25,800 INFO  L413           NwaCegarLoop]: 34884 mSDtfsCounter, 1280107 mSDsluCounter, 762546 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280107 SdHoareTripleChecker+Valid, 797430 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.3s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-11-29 02:41:25,800 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1280107 Valid, 797430 Invalid, 1644 Unknown, 0 Unchecked, 3.3s Time], IncrementalHoareTripleChecker [96 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-11-29 02:41:26,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 239758 states.
[2023-11-29 02:41:27,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 239758 to 39210.
[2023-11-29 02:41:27,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39210 states, 39209 states have (on average 1.6657400086714784) internal successors, (65312), 39209 states have internal predecessors, (65312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:41:27,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39210 states to 39210 states and 65312 transitions.
[2023-11-29 02:41:27,142 INFO  L78                 Accepts]: Start accepts. Automaton has 39210 states and 65312 transitions. Word has length 7379
[2023-11-29 02:41:27,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:41:27,146 INFO  L495      AbstractCegarLoop]: Abstraction has 39210 states and 65312 transitions.
[2023-11-29 02:41:27,147 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:41:27,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 39210 states and 65312 transitions.
[2023-11-29 02:41:27,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7381
[2023-11-29 02:41:27,375 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:41:27,377 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 02:41:27,499 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 02:41:27,577 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:41:27,578 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:41:27,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:41:27,579 INFO  L85        PathProgramCache]: Analyzing trace with hash 745020198, now seen corresponding path program 1 times
[2023-11-29 02:41:27,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:41:27,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372755136]
[2023-11-29 02:41:27,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:41:27,580 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:41:28,277 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:41:28,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313311526]
[2023-11-29 02:41:28,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:41:28,279 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:41:28,279 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:41:28,279 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:41:28,280 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 02:41:39,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:41:40,202 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36934 conjuncts, 166 conjunts are in the unsatisfiable core
[2023-11-29 02:41:40,333 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:41:59,658 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 02:41:59,658 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:41:59,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:41:59,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372755136]
[2023-11-29 02:41:59,658 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:41:59,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313311526]
[2023-11-29 02:41:59,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313311526] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:41:59,659 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:41:59,661 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2023-11-29 02:41:59,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910764173]
[2023-11-29 02:41:59,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:41:59,664 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2023-11-29 02:41:59,664 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:41:59,668 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2023-11-29 02:41:59,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=3064, Unknown=0, NotChecked=0, Total=3192
[2023-11-29 02:41:59,671 INFO  L87              Difference]: Start difference. First operand 39210 states and 65312 transitions. Second operand  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:08,723 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:08,723 INFO  L93              Difference]: Finished difference Result 479373 states and 798215 transitions.
[2023-11-29 02:43:08,724 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. 
[2023-11-29 02:43:08,725 INFO  L78                 Accepts]: Start accepts. Automaton has  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 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 7380
[2023-11-29 02:43:08,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:09,183 INFO  L225             Difference]: With dead ends: 479373
[2023-11-29 02:43:09,183 INFO  L226             Difference]: Without dead ends: 440695
[2023-11-29 02:43:09,234 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7644 GetRequests, 7345 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33680 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=15052, Invalid=75248, Unknown=0, NotChecked=0, Total=90300
[2023-11-29 02:43:09,235 INFO  L413           NwaCegarLoop]: 36271 mSDtfsCounter, 1267301 mSDsluCounter, 1829927 mSDsCounter, 0 mSdLazyCounter, 10256 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267301 SdHoareTripleChecker+Valid, 1866198 SdHoareTripleChecker+Invalid, 10321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 10256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:09,236 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1267301 Valid, 1866198 Invalid, 10321 Unknown, 0 Unchecked, 6.1s Time], IncrementalHoareTripleChecker [65 Valid, 10256 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-11-29 02:43:09,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 440695 states.
[2023-11-29 02:43:11,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 440695 to 70290.
[2023-11-29 02:43:11,598 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70290 states, 70289 states have (on average 1.6644851968302294) internal successors, (116995), 70289 states have internal predecessors, (116995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:11,676 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70290 states to 70290 states and 116995 transitions.
[2023-11-29 02:43:11,676 INFO  L78                 Accepts]: Start accepts. Automaton has 70290 states and 116995 transitions. Word has length 7380
[2023-11-29 02:43:11,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:11,679 INFO  L495      AbstractCegarLoop]: Abstraction has 70290 states and 116995 transitions.
[2023-11-29 02:43:11,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:11,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 70290 states and 116995 transitions.
[2023-11-29 02:43:12,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-11-29 02:43:12,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:12,190 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 02:43:12,313 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 02:43:12,390 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:12,391 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:12,391 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:12,392 INFO  L85        PathProgramCache]: Analyzing trace with hash -878064822, now seen corresponding path program 1 times
[2023-11-29 02:43:12,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:12,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71206592]
[2023-11-29 02:43:12,393 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:12,393 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:13,080 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:13,080 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221059608]
[2023-11-29 02:43:13,081 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:13,081 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:13,082 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:13,082 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:13,083 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 02:43:29,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:29,324 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36937 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-29 02:43:29,407 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:43:33,363 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 02:43:33,363 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:43:33,363 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:43:33,363 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71206592]
[2023-11-29 02:43:33,363 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:43:33,363 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221059608]
[2023-11-29 02:43:33,363 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221059608] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:43:33,363 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:43:33,365 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 02:43:33,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006645647]
[2023-11-29 02:43:33,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:43:33,369 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 02:43:33,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:43:33,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 02:43:33,374 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 02:43:33,375 INFO  L87              Difference]: Start difference. First operand 70290 states and 116995 transitions. Second operand  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:44,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:43:44,428 INFO  L93              Difference]: Finished difference Result 182006 states and 302920 transitions.
[2023-11-29 02:43:44,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 02:43:44,430 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 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 7381
[2023-11-29 02:43:44,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:43:44,500 INFO  L225             Difference]: With dead ends: 182006
[2023-11-29 02:43:44,500 INFO  L226             Difference]: Without dead ends: 112248
[2023-11-29 02:43:44,524 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7382 GetRequests, 7377 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 02:43:44,524 INFO  L413           NwaCegarLoop]: 24786 mSDtfsCounter, 6400 mSDsluCounter, 57913 mSDsCounter, 0 mSdLazyCounter, 14498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6400 SdHoareTripleChecker+Valid, 82699 SdHoareTripleChecker+Invalid, 14498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time
[2023-11-29 02:43:44,525 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6400 Valid, 82699 Invalid, 14498 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 14498 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time]
[2023-11-29 02:43:44,575 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112248 states.
[2023-11-29 02:43:45,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112248 to 103622.
[2023-11-29 02:43:45,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103622 states, 103621 states have (on average 1.6650196388762895) internal successors, (172531), 103621 states have internal predecessors, (172531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:45,634 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103622 states to 103622 states and 172531 transitions.
[2023-11-29 02:43:45,635 INFO  L78                 Accepts]: Start accepts. Automaton has 103622 states and 172531 transitions. Word has length 7381
[2023-11-29 02:43:45,637 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:43:45,638 INFO  L495      AbstractCegarLoop]: Abstraction has 103622 states and 172531 transitions.
[2023-11-29 02:43:45,639 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:43:45,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 103622 states and 172531 transitions.
[2023-11-29 02:43:46,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-11-29 02:43:46,284 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:43:46,285 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 02:43:46,414 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 02:43:46,485 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:46,486 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:43:46,486 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:43:46,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 1792464072, now seen corresponding path program 1 times
[2023-11-29 02:43:46,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:43:46,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881485866]
[2023-11-29 02:43:46,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:46,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:43:47,154 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:43:47,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064483030]
[2023-11-29 02:43:47,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:43:47,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:43:47,155 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:43:47,156 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:43:47,157 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 02:43:56,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:43:56,848 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36936 conjuncts, 46 conjunts are in the unsatisfiable core
[2023-11-29 02:43:56,942 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:44:00,278 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 02:44:00,278 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:44:00,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:44:00,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881485866]
[2023-11-29 02:44:00,279 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:44:00,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064483030]
[2023-11-29 02:44:00,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064483030] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:44:00,279 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:44:00,281 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-11-29 02:44:00,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771094066]
[2023-11-29 02:44:00,281 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:44:00,285 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-29 02:44:00,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:44:00,289 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-29 02:44:00,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2023-11-29 02:44:00,291 INFO  L87              Difference]: Start difference. First operand 103622 states and 172531 transitions. Second operand  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:08,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:45:08,895 INFO  L93              Difference]: Finished difference Result 578804 states and 963778 transitions.
[2023-11-29 02:45:08,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-11-29 02:45:08,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 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 7381
[2023-11-29 02:45:08,900 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:45:09,491 INFO  L225             Difference]: With dead ends: 578804
[2023-11-29 02:45:09,491 INFO  L226             Difference]: Without dead ends: 475714
[2023-11-29 02:45:09,557 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7415 GetRequests, 7375 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722
[2023-11-29 02:45:09,558 INFO  L413           NwaCegarLoop]: 35042 mSDtfsCounter, 169479 mSDsluCounter, 279649 mSDsCounter, 0 mSdLazyCounter, 125911 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169479 SdHoareTripleChecker+Valid, 314691 SdHoareTripleChecker+Invalid, 125914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.0s IncrementalHoareTripleChecker+Time
[2023-11-29 02:45:09,559 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [169479 Valid, 314691 Invalid, 125914 Unknown, 0 Unchecked, 1.4s Time], IncrementalHoareTripleChecker [3 Valid, 125911 Invalid, 0 Unknown, 0 Unchecked, 62.0s Time]
[2023-11-29 02:45:09,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 475714 states.
[2023-11-29 02:45:12,617 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 475714 to 103710.
[2023-11-29 02:45:12,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103710 states, 103709 states have (on average 1.6646096288653829) internal successors, (172635), 103709 states have internal predecessors, (172635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:12,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103710 states to 103710 states and 172635 transitions.
[2023-11-29 02:45:12,837 INFO  L78                 Accepts]: Start accepts. Automaton has 103710 states and 172635 transitions. Word has length 7381
[2023-11-29 02:45:12,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:45:12,841 INFO  L495      AbstractCegarLoop]: Abstraction has 103710 states and 172635 transitions.
[2023-11-29 02:45:12,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:45:12,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 103710 states and 172635 transitions.
[2023-11-29 02:45:13,593 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-11-29 02:45:13,593 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:45:13,594 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 02:45:13,737 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 02:45:13,795 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 02:45:13,795 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:45:13,796 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:45:13,797 INFO  L85        PathProgramCache]: Analyzing trace with hash 537199624, now seen corresponding path program 1 times
[2023-11-29 02:45:13,797 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:45:13,797 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359794616]
[2023-11-29 02:45:13,798 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:13,798 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:45:14,649 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:45:14,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030952032]
[2023-11-29 02:45:14,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:45:14,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:45:14,651 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:45:14,651 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:45:14,652 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 02:45:44,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 02:45:44,608 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36938 conjuncts, 136 conjunts are in the unsatisfiable core
[2023-11-29 02:45:44,721 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 02:46:24,161 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 02:46:24,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 02:46:24,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 02:46:24,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359794616]
[2023-11-29 02:46:24,161 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 02:46:24,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030952032]
[2023-11-29 02:46:24,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030952032] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 02:46:24,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 02:46:24,163 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-11-29 02:46:24,163 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552929795]
[2023-11-29 02:46:24,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 02:46:24,166 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2023-11-29 02:46:24,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 02:46:24,172 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2023-11-29 02:46:24,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380
[2023-11-29 02:46:24,174 INFO  L87              Difference]: Start difference. First operand 103710 states and 172635 transitions. Second operand  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:25,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 02:47:25,214 INFO  L93              Difference]: Finished difference Result 535854 states and 891863 transitions.
[2023-11-29 02:47:25,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2023-11-29 02:47:25,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 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 7381
[2023-11-29 02:47:25,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 02:47:25,726 INFO  L225             Difference]: With dead ends: 535854
[2023-11-29 02:47:25,726 INFO  L226             Difference]: Without dead ends: 432676
[2023-11-29 02:47:25,787 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7398 GetRequests, 7362 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406
[2023-11-29 02:47:25,788 INFO  L413           NwaCegarLoop]: 20534 mSDtfsCounter, 192779 mSDsluCounter, 262639 mSDsCounter, 0 mSdLazyCounter, 95989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192779 SdHoareTripleChecker+Valid, 283173 SdHoareTripleChecker+Invalid, 95990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.1s IncrementalHoareTripleChecker+Time
[2023-11-29 02:47:25,788 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [192779 Valid, 283173 Invalid, 95990 Unknown, 0 Unchecked, 1.4s Time], IncrementalHoareTripleChecker [1 Valid, 95989 Invalid, 0 Unknown, 0 Unchecked, 55.1s Time]
[2023-11-29 02:47:26,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 432676 states.
[2023-11-29 02:47:28,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 432676 to 126206.
[2023-11-29 02:47:28,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 126206 states, 126205 states have (on average 1.6646250148567807) internal successors, (210084), 126205 states have internal predecessors, (210084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:28,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126206 states to 126206 states and 210084 transitions.
[2023-11-29 02:47:28,684 INFO  L78                 Accepts]: Start accepts. Automaton has 126206 states and 210084 transitions. Word has length 7381
[2023-11-29 02:47:28,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 02:47:28,688 INFO  L495      AbstractCegarLoop]: Abstraction has 126206 states and 210084 transitions.
[2023-11-29 02:47:28,690 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 02:47:28,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 126206 states and 210084 transitions.
[2023-11-29 02:47:29,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-11-29 02:47:29,200 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 02:47:29,201 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 02:47:29,341 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 02:47:29,402 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 02:47:29,402 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 02:47:29,402 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 02:47:29,403 INFO  L85        PathProgramCache]: Analyzing trace with hash 991146122, now seen corresponding path program 1 times
[2023-11-29 02:47:29,403 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 02:47:29,404 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005794675]
[2023-11-29 02:47:29,404 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:29,404 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 02:47:30,137 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 02:47:30,137 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144282821]
[2023-11-29 02:47:30,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 02:47:30,139 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 02:47:30,139 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 02:47:30,140 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 02:47:30,143 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_100998aa-6fe2-45cc-ac8d-16579c8ceb78/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process