./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/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 4266779bbe6f4bb49ffaaab7243596bd26eeda5dc295f430486a067412960e81
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 06:53:18,448 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 06:53:18,524 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 06:53:18,529 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 06:53:18,530 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 06:53:18,559 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 06:53:18,559 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 06:53:18,560 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 06:53:18,561 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 06:53:18,561 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 06:53:18,562 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 06:53:18,562 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 06:53:18,563 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 06:53:18,564 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 06:53:18,564 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 06:53:18,565 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 06:53:18,565 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 06:53:18,566 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 06:53:18,567 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 06:53:18,567 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 06:53:18,567 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 06:53:18,568 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 06:53:18,569 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 06:53:18,569 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 06:53:18,569 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 06:53:18,570 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 06:53:18,570 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 06:53:18,571 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 06:53:18,571 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:53:18,572 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 06:53:18,572 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 06:53:18,572 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 06:53:18,573 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 06:53:18,573 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 06:53:18,573 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 06:53:18,574 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 06:53:18,574 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 06:53:18,574 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 06:53:18,574 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 06:53:18,574 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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/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 -> 4266779bbe6f4bb49ffaaab7243596bd26eeda5dc295f430486a067412960e81
[2023-11-29 06:53:18,850 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 06:53:18,869 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 06:53:18,872 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 06:53:18,873 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 06:53:18,873 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 06:53:18,875 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c
[2023-11-29 06:53:21,695 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 06:53:22,061 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 06:53:22,061 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c
[2023-11-29 06:53:22,082 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/data/61a6bde4d/50beab13bb1f44899d77e01b16873e9d/FLAG36662fa43
[2023-11-29 06:53:22,095 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/data/61a6bde4d/50beab13bb1f44899d77e01b16873e9d
[2023-11-29 06:53:22,097 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 06:53:22,099 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 06:53:22,100 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 06:53:22,100 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 06:53:22,105 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 06:53:22,106 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:53:22" (1/1) ...
[2023-11-29 06:53:22,107 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4665befc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:22, skipping insertion in model container
[2023-11-29 06:53:22,107 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:53:22" (1/1) ...
[2023-11-29 06:53:22,210 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 06:53:22,425 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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c[1181,1194]
[2023-11-29 06:53:23,089 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:53:23,099 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 06:53:23,109 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_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c[1181,1194]
[2023-11-29 06:53:23,508 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 06:53:23,523 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 06:53:23,523 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23 WrapperNode
[2023-11-29 06:53:23,523 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 06:53:23,525 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 06:53:23,525 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 06:53:23,525 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 06:53:23,532 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:23,654 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:24,963 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20058
[2023-11-29 06:53:24,963 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 06:53:24,964 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 06:53:24,964 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 06:53:24,964 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 06:53:24,974 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:24,974 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:25,240 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:25,559 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 06:53:25,559 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:25,559 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:25,873 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:25,943 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:26,001 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:26,047 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:26,270 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 06:53:26,271 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 06:53:26,271 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 06:53:26,271 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 06:53:26,272 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (1/1) ...
[2023-11-29 06:53:26,278 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 06:53:26,287 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:26,299 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 06:53:26,304 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 06:53:26,336 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 06:53:26,336 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 06:53:26,336 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 06:53:26,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 06:53:27,301 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 06:53:27,304 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 06:53:38,436 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 06:53:38,711 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 06:53:38,711 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 06:53:38,713 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:53:38 BoogieIcfgContainer
[2023-11-29 06:53:38,714 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 06:53:38,715 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 06:53:38,715 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 06:53:38,718 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 06:53:38,719 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:53:22" (1/3) ...
[2023-11-29 06:53:38,719 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f6fe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:53:38, skipping insertion in model container
[2023-11-29 06:53:38,720 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:53:23" (2/3) ...
[2023-11-29 06:53:38,720 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f6fe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:53:38, skipping insertion in model container
[2023-11-29 06:53:38,720 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:53:38" (3/3) ...
[2023-11-29 06:53:38,721 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.driving_phils.4.prop1-back-serstep.c
[2023-11-29 06:53:38,736 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 06:53:38,736 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 06:53:38,846 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 06:53:38,852 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;@14e31270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 06:53:38,853 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 06:53:38,868 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4852 states, 4850 states have (on average 1.6762886597938145) internal successors, (8130), 4851 states have internal predecessors, (8130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:38,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 431
[2023-11-29 06:53:38,896 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:38,897 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]
[2023-11-29 06:53:38,898 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:38,902 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:38,903 INFO  L85        PathProgramCache]: Analyzing trace with hash -1469033754, now seen corresponding path program 1 times
[2023-11-29 06:53:38,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:38,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394558214]
[2023-11-29 06:53:38,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:38,911 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:39,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:41,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:41,033 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:41,033 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394558214]
[2023-11-29 06:53:41,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394558214] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:41,034 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:41,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:41,036 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886852567]
[2023-11-29 06:53:41,037 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:41,043 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:41,043 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:41,073 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:41,074 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:41,088 INFO  L87              Difference]: Start difference. First operand  has 4852 states, 4850 states have (on average 1.6762886597938145) internal successors, (8130), 4851 states have internal predecessors, (8130), 0 states have call successors, (0), 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 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:41,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:41,412 INFO  L93              Difference]: Finished difference Result 9547 states and 16001 transitions.
[2023-11-29 06:53:41,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:53:41,415 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 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 430
[2023-11-29 06:53:41,418 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:41,458 INFO  L225             Difference]: With dead ends: 9547
[2023-11-29 06:53:41,458 INFO  L226             Difference]: Without dead ends: 4852
[2023-11-29 06:53:41,469 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:41,473 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 1 mSDsluCounter, 16241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24364 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:41,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24364 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:53:41,502 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4852 states.
[2023-11-29 06:53:41,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4852.
[2023-11-29 06:53:41,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4852 states, 4851 states have (on average 1.6755308183879611) internal successors, (8128), 4851 states have internal predecessors, (8128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:41,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 8128 transitions.
[2023-11-29 06:53:41,644 INFO  L78                 Accepts]: Start accepts. Automaton has 4852 states and 8128 transitions. Word has length 430
[2023-11-29 06:53:41,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:41,646 INFO  L495      AbstractCegarLoop]: Abstraction has 4852 states and 8128 transitions.
[2023-11-29 06:53:41,646 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:41,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 4852 states and 8128 transitions.
[2023-11-29 06:53:41,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 432
[2023-11-29 06:53:41,655 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:41,655 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]
[2023-11-29 06:53:41,656 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 06:53:41,656 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:41,656 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:41,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 1706321386, now seen corresponding path program 1 times
[2023-11-29 06:53:41,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:41,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806008645]
[2023-11-29 06:53:41,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:41,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:41,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:42,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:42,659 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:42,660 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806008645]
[2023-11-29 06:53:42,660 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806008645] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:42,660 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:42,661 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:42,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700977774]
[2023-11-29 06:53:42,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:42,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:42,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:42,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:42,665 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:42,665 INFO  L87              Difference]: Start difference. First operand 4852 states and 8128 transitions. Second operand  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:42,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:42,922 INFO  L93              Difference]: Finished difference Result 9550 states and 15999 transitions.
[2023-11-29 06:53:42,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:53:42,923 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 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 431
[2023-11-29 06:53:42,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:42,949 INFO  L225             Difference]: With dead ends: 9550
[2023-11-29 06:53:42,949 INFO  L226             Difference]: Without dead ends: 4855
[2023-11-29 06:53:42,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:42,956 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 1 mSDsluCounter, 16239 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24362 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:42,957 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24362 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:53:42,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4855 states.
[2023-11-29 06:53:43,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4854.
[2023-11-29 06:53:43,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4854 states, 4853 states have (on average 1.6752524211827735) internal successors, (8130), 4853 states have internal predecessors, (8130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:43,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4854 states to 4854 states and 8130 transitions.
[2023-11-29 06:53:43,072 INFO  L78                 Accepts]: Start accepts. Automaton has 4854 states and 8130 transitions. Word has length 431
[2023-11-29 06:53:43,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:43,074 INFO  L495      AbstractCegarLoop]: Abstraction has 4854 states and 8130 transitions.
[2023-11-29 06:53:43,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:43,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 4854 states and 8130 transitions.
[2023-11-29 06:53:43,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 433
[2023-11-29 06:53:43,082 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:43,083 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]
[2023-11-29 06:53:43,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 06:53:43,083 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:43,084 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:43,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1145925504, now seen corresponding path program 1 times
[2023-11-29 06:53:43,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:43,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68435698]
[2023-11-29 06:53:43,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:43,085 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:43,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:44,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:44,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:44,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68435698]
[2023-11-29 06:53:44,249 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68435698] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:44,249 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:44,250 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:44,250 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788199759]
[2023-11-29 06:53:44,250 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:44,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:44,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:44,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:44,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:44,253 INFO  L87              Difference]: Start difference. First operand 4854 states and 8130 transitions. Second operand  has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:44,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:44,731 INFO  L93              Difference]: Finished difference Result 14242 states and 23859 transitions.
[2023-11-29 06:53:44,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 06:53:44,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 432
[2023-11-29 06:53:44,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:44,784 INFO  L225             Difference]: With dead ends: 14242
[2023-11-29 06:53:44,784 INFO  L226             Difference]: Without dead ends: 9545
[2023-11-29 06:53:44,793 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:53:44,794 INFO  L413           NwaCegarLoop]: 8918 mSDtfsCounter, 7856 mSDsluCounter, 17032 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7856 SdHoareTripleChecker+Valid, 25950 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:44,795 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7856 Valid, 25950 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:44,812 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9545 states.
[2023-11-29 06:53:44,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 4856.
[2023-11-29 06:53:44,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4856 states, 4855 states have (on average 1.6749742533470648) internal successors, (8132), 4855 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:44,978 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 8132 transitions.
[2023-11-29 06:53:44,978 INFO  L78                 Accepts]: Start accepts. Automaton has 4856 states and 8132 transitions. Word has length 432
[2023-11-29 06:53:44,979 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:44,979 INFO  L495      AbstractCegarLoop]: Abstraction has 4856 states and 8132 transitions.
[2023-11-29 06:53:44,980 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:44,980 INFO  L276                IsEmpty]: Start isEmpty. Operand 4856 states and 8132 transitions.
[2023-11-29 06:53:44,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 434
[2023-11-29 06:53:44,991 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:44,992 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]
[2023-11-29 06:53:44,992 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 06:53:44,993 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:44,993 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:44,993 INFO  L85        PathProgramCache]: Analyzing trace with hash -1531105712, now seen corresponding path program 1 times
[2023-11-29 06:53:44,994 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:44,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678627450]
[2023-11-29 06:53:44,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:44,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:45,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:46,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:46,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:46,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678627450]
[2023-11-29 06:53:46,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678627450] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:46,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:46,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:46,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328827494]
[2023-11-29 06:53:46,030 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:46,031 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:46,031 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:46,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:46,033 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:46,033 INFO  L87              Difference]: Start difference. First operand 4856 states and 8132 transitions. Second operand  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:46,364 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:46,365 INFO  L93              Difference]: Finished difference Result 14245 states and 23860 transitions.
[2023-11-29 06:53:46,365 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 06:53:46,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 433
[2023-11-29 06:53:46,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:46,406 INFO  L225             Difference]: With dead ends: 14245
[2023-11-29 06:53:46,406 INFO  L226             Difference]: Without dead ends: 9546
[2023-11-29 06:53:46,415 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:53:46,416 INFO  L413           NwaCegarLoop]: 8913 mSDtfsCounter, 7853 mSDsluCounter, 17027 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7853 SdHoareTripleChecker+Valid, 25940 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:46,417 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7853 Valid, 25940 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:46,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9546 states.
[2023-11-29 06:53:46,564 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 4858.
[2023-11-29 06:53:46,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4858 states, 4857 states have (on average 1.6746963145974882) internal successors, (8134), 4857 states have internal predecessors, (8134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:46,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 8134 transitions.
[2023-11-29 06:53:46,590 INFO  L78                 Accepts]: Start accepts. Automaton has 4858 states and 8134 transitions. Word has length 433
[2023-11-29 06:53:46,592 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:46,592 INFO  L495      AbstractCegarLoop]: Abstraction has 4858 states and 8134 transitions.
[2023-11-29 06:53:46,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:46,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 4858 states and 8134 transitions.
[2023-11-29 06:53:46,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 435
[2023-11-29 06:53:46,603 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:46,604 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]
[2023-11-29 06:53:46,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 06:53:46,605 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:46,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:46,605 INFO  L85        PathProgramCache]: Analyzing trace with hash 705369884, now seen corresponding path program 1 times
[2023-11-29 06:53:46,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:46,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645861609]
[2023-11-29 06:53:46,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:46,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:46,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:47,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:47,713 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:47,713 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645861609]
[2023-11-29 06:53:47,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645861609] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:47,714 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:47,714 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:47,714 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114987447]
[2023-11-29 06:53:47,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:47,715 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:47,716 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:47,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:47,717 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:47,717 INFO  L87              Difference]: Start difference. First operand 4858 states and 8134 transitions. Second operand  has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:47,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:47,903 INFO  L93              Difference]: Finished difference Result 14248 states and 23861 transitions.
[2023-11-29 06:53:47,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 06:53:47,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 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 434
[2023-11-29 06:53:47,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:47,924 INFO  L225             Difference]: With dead ends: 14248
[2023-11-29 06:53:47,924 INFO  L226             Difference]: Without dead ends: 9547
[2023-11-29 06:53:47,932 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:53:47,933 INFO  L413           NwaCegarLoop]: 8908 mSDtfsCounter, 7850 mSDsluCounter, 17022 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7850 SdHoareTripleChecker+Valid, 25930 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:47,933 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7850 Valid, 25930 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:53:47,946 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9547 states.
[2023-11-29 06:53:48,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 4860.
[2023-11-29 06:53:48,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4860 states, 4859 states have (on average 1.6744186046511629) internal successors, (8136), 4859 states have internal predecessors, (8136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:48,067 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 8136 transitions.
[2023-11-29 06:53:48,067 INFO  L78                 Accepts]: Start accepts. Automaton has 4860 states and 8136 transitions. Word has length 434
[2023-11-29 06:53:48,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:48,068 INFO  L495      AbstractCegarLoop]: Abstraction has 4860 states and 8136 transitions.
[2023-11-29 06:53:48,068 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:48,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 4860 states and 8136 transitions.
[2023-11-29 06:53:48,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 436
[2023-11-29 06:53:48,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:48,078 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]
[2023-11-29 06:53:48,078 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 06:53:48,079 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:48,079 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:48,079 INFO  L85        PathProgramCache]: Analyzing trace with hash 2066544056, now seen corresponding path program 1 times
[2023-11-29 06:53:48,079 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:48,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573157475]
[2023-11-29 06:53:48,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:48,080 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:48,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:48,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:48,991 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:48,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573157475]
[2023-11-29 06:53:48,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573157475] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:48,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:48,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:48,992 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370261328]
[2023-11-29 06:53:48,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:48,993 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:53:48,993 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:48,994 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:53:48,994 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 06:53:48,995 INFO  L87              Difference]: Start difference. First operand 4860 states and 8136 transitions. Second operand  has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:49,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:49,321 INFO  L93              Difference]: Finished difference Result 14741 states and 24676 transitions.
[2023-11-29 06:53:49,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:53:49,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 435
[2023-11-29 06:53:49,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:49,341 INFO  L225             Difference]: With dead ends: 14741
[2023-11-29 06:53:49,341 INFO  L226             Difference]: Without dead ends: 10038
[2023-11-29 06:53:49,349 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 06:53:49,350 INFO  L413           NwaCegarLoop]: 8917 mSDtfsCounter, 32066 mSDsluCounter, 16240 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32066 SdHoareTripleChecker+Valid, 25157 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:49,350 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32066 Valid, 25157 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:53:49,363 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10038 states.
[2023-11-29 06:53:49,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 5337.
[2023-11-29 06:53:49,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5337 states, 5336 states have (on average 1.6737256371814093) internal successors, (8931), 5336 states have internal predecessors, (8931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:49,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 8931 transitions.
[2023-11-29 06:53:49,469 INFO  L78                 Accepts]: Start accepts. Automaton has 5337 states and 8931 transitions. Word has length 435
[2023-11-29 06:53:49,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:49,470 INFO  L495      AbstractCegarLoop]: Abstraction has 5337 states and 8931 transitions.
[2023-11-29 06:53:49,470 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:49,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 5337 states and 8931 transitions.
[2023-11-29 06:53:49,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:53:49,594 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:49,596 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2023-11-29 06:53:49,596 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 06:53:49,597 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:49,597 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:49,598 INFO  L85        PathProgramCache]: Analyzing trace with hash -1749596648, now seen corresponding path program 1 times
[2023-11-29 06:53:49,598 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:49,598 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392833743]
[2023-11-29 06:53:49,599 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:49,599 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:50,149 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:50,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095499308]
[2023-11-29 06:53:50,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:50,150 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:50,150 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:50,152 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:50,154 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 06:53:53,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:54,045 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15652 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:53:54,139 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:54,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:54,313 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:54,313 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:54,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392833743]
[2023-11-29 06:53:54,314 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:54,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095499308]
[2023-11-29 06:53:54,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095499308] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:54,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:54,315 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:54,316 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464697021]
[2023-11-29 06:53:54,316 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:54,321 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:54,321 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:54,325 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:54,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:54,326 INFO  L87              Difference]: Start difference. First operand 5337 states and 8931 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:54,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:54,465 INFO  L93              Difference]: Finished difference Result 10050 states and 16822 transitions.
[2023-11-29 06:53:54,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:53:54,466 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:53:54,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:54,478 INFO  L225             Difference]: With dead ends: 10050
[2023-11-29 06:53:54,478 INFO  L226             Difference]: Without dead ends: 5347
[2023-11-29 06:53:54,485 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:54,486 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:54,486 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:53:54,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5347 states.
[2023-11-29 06:53:54,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5339.
[2023-11-29 06:53:54,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5339 states, 5338 states have (on average 1.6734732109404271) internal successors, (8933), 5338 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:54,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8933 transitions.
[2023-11-29 06:53:54,579 INFO  L78                 Accepts]: Start accepts. Automaton has 5339 states and 8933 transitions. Word has length 3330
[2023-11-29 06:53:54,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:54,580 INFO  L495      AbstractCegarLoop]: Abstraction has 5339 states and 8933 transitions.
[2023-11-29 06:53:54,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:54,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 5339 states and 8933 transitions.
[2023-11-29 06:53:54,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:53:54,659 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:54,661 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:53:54,697 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 06:53:54,861 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:54,862 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:54,862 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:54,863 INFO  L85        PathProgramCache]: Analyzing trace with hash 230392934, now seen corresponding path program 1 times
[2023-11-29 06:53:54,863 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:54,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942953772]
[2023-11-29 06:53:54,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:54,864 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:53:55,230 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:53:55,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027620007]
[2023-11-29 06:53:55,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:55,231 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:53:55,231 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:53:55,232 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:53:55,233 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 06:53:58,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:53:58,900 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15653 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:53:58,947 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:53:59,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:53:59,062 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:53:59,063 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:53:59,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942953772]
[2023-11-29 06:53:59,063 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:53:59,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027620007]
[2023-11-29 06:53:59,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027620007] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:53:59,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:53:59,064 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:53:59,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342502800]
[2023-11-29 06:53:59,065 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:53:59,069 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:53:59,069 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:53:59,073 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:53:59,074 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:59,075 INFO  L87              Difference]: Start difference. First operand 5339 states and 8933 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:59,249 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:53:59,250 INFO  L93              Difference]: Finished difference Result 10053 states and 16824 transitions.
[2023-11-29 06:53:59,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:53:59,251 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:53:59,252 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:53:59,261 INFO  L225             Difference]: With dead ends: 10053
[2023-11-29 06:53:59,261 INFO  L226             Difference]: Without dead ends: 5348
[2023-11-29 06:53:59,267 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:53:59,268 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:53:59,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 06:53:59,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5348 states.
[2023-11-29 06:53:59,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5340.
[2023-11-29 06:53:59,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5340 states, 5339 states have (on average 1.6733470687394643) internal successors, (8934), 5339 states have internal predecessors, (8934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:59,363 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 8934 transitions.
[2023-11-29 06:53:59,363 INFO  L78                 Accepts]: Start accepts. Automaton has 5340 states and 8934 transitions. Word has length 3330
[2023-11-29 06:53:59,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:53:59,365 INFO  L495      AbstractCegarLoop]: Abstraction has 5340 states and 8934 transitions.
[2023-11-29 06:53:59,366 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:53:59,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 5340 states and 8934 transitions.
[2023-11-29 06:53:59,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:53:59,423 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:53:59,426 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:53:59,467 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 06:53:59,635 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-29 06:53:59,636 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:53:59,636 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:53:59,637 INFO  L85        PathProgramCache]: Analyzing trace with hash 1813188020, now seen corresponding path program 1 times
[2023-11-29 06:53:59,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:53:59,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321963068]
[2023-11-29 06:53:59,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:53:59,638 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:00,061 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:00,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588356430]
[2023-11-29 06:54:00,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:00,063 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:00,063 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:00,065 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:00,066 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 06:54:03,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:03,524 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15654 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:03,574 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:03,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:03,684 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:03,684 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:03,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321963068]
[2023-11-29 06:54:03,684 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:03,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588356430]
[2023-11-29 06:54:03,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [588356430] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:03,684 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:03,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:03,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788817504]
[2023-11-29 06:54:03,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:03,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:03,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:03,693 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:03,694 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:03,695 INFO  L87              Difference]: Start difference. First operand 5340 states and 8934 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:03,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:03,842 INFO  L93              Difference]: Finished difference Result 10055 states and 16826 transitions.
[2023-11-29 06:54:03,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:03,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:03,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:03,854 INFO  L225             Difference]: With dead ends: 10055
[2023-11-29 06:54:03,854 INFO  L226             Difference]: Without dead ends: 5349
[2023-11-29 06:54:03,860 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:03,861 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:03,861 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:03,869 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5349 states.
[2023-11-29 06:54:03,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 5341.
[2023-11-29 06:54:03,940 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5341 states, 5340 states have (on average 1.6732209737827715) internal successors, (8935), 5340 states have internal predecessors, (8935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:03,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 8935 transitions.
[2023-11-29 06:54:03,949 INFO  L78                 Accepts]: Start accepts. Automaton has 5341 states and 8935 transitions. Word has length 3330
[2023-11-29 06:54:03,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:03,950 INFO  L495      AbstractCegarLoop]: Abstraction has 5341 states and 8935 transitions.
[2023-11-29 06:54:03,951 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:03,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 5341 states and 8935 transitions.
[2023-11-29 06:54:04,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:04,031 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:04,034 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:04,069 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 06:54:04,234 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:04,235 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:04,235 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:04,237 INFO  L85        PathProgramCache]: Analyzing trace with hash -734660606, now seen corresponding path program 1 times
[2023-11-29 06:54:04,237 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:04,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914846061]
[2023-11-29 06:54:04,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:04,238 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:04,569 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:04,569 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565708097]
[2023-11-29 06:54:04,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:04,570 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:04,570 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:04,571 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:04,572 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 06:54:08,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:08,128 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15655 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:08,169 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:08,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:08,245 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:08,246 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:08,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914846061]
[2023-11-29 06:54:08,246 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:08,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565708097]
[2023-11-29 06:54:08,246 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [565708097] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:08,246 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:08,247 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:08,248 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834931130]
[2023-11-29 06:54:08,248 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:08,250 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:08,250 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:08,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:08,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:08,254 INFO  L87              Difference]: Start difference. First operand 5341 states and 8935 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:08,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:08,374 INFO  L93              Difference]: Finished difference Result 10057 states and 16828 transitions.
[2023-11-29 06:54:08,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:08,375 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:08,376 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:08,381 INFO  L225             Difference]: With dead ends: 10057
[2023-11-29 06:54:08,381 INFO  L226             Difference]: Without dead ends: 5350
[2023-11-29 06:54:08,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:08,386 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:08,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:08,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5350 states.
[2023-11-29 06:54:08,437 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5342.
[2023-11-29 06:54:08,442 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5342 states, 5341 states have (on average 1.673094926043812) internal successors, (8936), 5341 states have internal predecessors, (8936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:08,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8936 transitions.
[2023-11-29 06:54:08,449 INFO  L78                 Accepts]: Start accepts. Automaton has 5342 states and 8936 transitions. Word has length 3330
[2023-11-29 06:54:08,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:08,450 INFO  L495      AbstractCegarLoop]: Abstraction has 5342 states and 8936 transitions.
[2023-11-29 06:54:08,451 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:08,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 5342 states and 8936 transitions.
[2023-11-29 06:54:08,499 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:08,499 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:08,501 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:08,542 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 06:54:08,703 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 06:54:08,704 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:08,704 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:08,705 INFO  L85        PathProgramCache]: Analyzing trace with hash -1800487344, now seen corresponding path program 1 times
[2023-11-29 06:54:08,705 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:08,705 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78923022]
[2023-11-29 06:54:08,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:08,706 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:08,999 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:08,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850920559]
[2023-11-29 06:54:09,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:09,000 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:09,000 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:09,001 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:09,002 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 06:54:12,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:12,648 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15656 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:12,704 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:12,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:12,776 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:12,776 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:12,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78923022]
[2023-11-29 06:54:12,776 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:12,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850920559]
[2023-11-29 06:54:12,776 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [850920559] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:12,777 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:12,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:12,778 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704600321]
[2023-11-29 06:54:12,778 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:12,781 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:12,781 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:12,783 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:12,783 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:12,784 INFO  L87              Difference]: Start difference. First operand 5342 states and 8936 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:12,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:12,902 INFO  L93              Difference]: Finished difference Result 10059 states and 16830 transitions.
[2023-11-29 06:54:12,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:12,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:12,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:12,909 INFO  L225             Difference]: With dead ends: 10059
[2023-11-29 06:54:12,910 INFO  L226             Difference]: Without dead ends: 5351
[2023-11-29 06:54:12,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:12,915 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:12,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:12,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5351 states.
[2023-11-29 06:54:12,964 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 5343.
[2023-11-29 06:54:12,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5343 states, 5342 states have (on average 1.672968925496069) internal successors, (8937), 5342 states have internal predecessors, (8937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:12,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 8937 transitions.
[2023-11-29 06:54:12,975 INFO  L78                 Accepts]: Start accepts. Automaton has 5343 states and 8937 transitions. Word has length 3330
[2023-11-29 06:54:12,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:12,976 INFO  L495      AbstractCegarLoop]: Abstraction has 5343 states and 8937 transitions.
[2023-11-29 06:54:12,977 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:12,977 INFO  L276                IsEmpty]: Start isEmpty. Operand 5343 states and 8937 transitions.
[2023-11-29 06:54:13,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:13,026 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:13,027 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:13,065 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 06:54:13,228 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:13,228 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:13,229 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:13,230 INFO  L85        PathProgramCache]: Analyzing trace with hash 169074206, now seen corresponding path program 1 times
[2023-11-29 06:54:13,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:13,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022007494]
[2023-11-29 06:54:13,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:13,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:13,522 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:13,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468646214]
[2023-11-29 06:54:13,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:13,523 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:13,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:13,524 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:13,526 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 06:54:16,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:16,927 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15657 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:16,961 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:17,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:17,027 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:17,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:17,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022007494]
[2023-11-29 06:54:17,028 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:17,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468646214]
[2023-11-29 06:54:17,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [468646214] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:17,028 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:17,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:17,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280186327]
[2023-11-29 06:54:17,030 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:17,033 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:17,033 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:17,037 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:17,037 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:17,038 INFO  L87              Difference]: Start difference. First operand 5343 states and 8937 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:17,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:17,160 INFO  L93              Difference]: Finished difference Result 10061 states and 16832 transitions.
[2023-11-29 06:54:17,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:17,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:17,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:17,166 INFO  L225             Difference]: With dead ends: 10061
[2023-11-29 06:54:17,166 INFO  L226             Difference]: Without dead ends: 5352
[2023-11-29 06:54:17,170 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:17,170 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:17,170 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:17,176 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5352 states.
[2023-11-29 06:54:17,232 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5344.
[2023-11-29 06:54:17,237 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5344 states, 5343 states have (on average 1.6728429721130451) internal successors, (8938), 5343 states have internal predecessors, (8938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:17,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 8938 transitions.
[2023-11-29 06:54:17,246 INFO  L78                 Accepts]: Start accepts. Automaton has 5344 states and 8938 transitions. Word has length 3330
[2023-11-29 06:54:17,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:17,248 INFO  L495      AbstractCegarLoop]: Abstraction has 5344 states and 8938 transitions.
[2023-11-29 06:54:17,249 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:17,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 5344 states and 8938 transitions.
[2023-11-29 06:54:17,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:17,317 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:17,319 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:17,352 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 06:54:17,519 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:17,520 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:17,520 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:17,521 INFO  L85        PathProgramCache]: Analyzing trace with hash 1402728940, now seen corresponding path program 1 times
[2023-11-29 06:54:17,521 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:17,521 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595513283]
[2023-11-29 06:54:17,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:17,522 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:17,793 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:17,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020088060]
[2023-11-29 06:54:17,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:17,794 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:17,794 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:17,795 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:17,797 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 06:54:21,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:21,290 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15658 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:21,327 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:21,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:21,390 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:21,390 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:21,390 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595513283]
[2023-11-29 06:54:21,390 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:21,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020088060]
[2023-11-29 06:54:21,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020088060] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:21,391 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:21,392 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:21,392 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461269355]
[2023-11-29 06:54:21,392 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:21,395 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:21,395 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:21,398 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:21,398 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:21,399 INFO  L87              Difference]: Start difference. First operand 5344 states and 8938 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:21,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:21,506 INFO  L93              Difference]: Finished difference Result 10063 states and 16834 transitions.
[2023-11-29 06:54:21,506 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:21,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:21,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:21,512 INFO  L225             Difference]: With dead ends: 10063
[2023-11-29 06:54:21,512 INFO  L226             Difference]: Without dead ends: 5353
[2023-11-29 06:54:21,515 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:21,516 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:21,516 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:21,521 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5353 states.
[2023-11-29 06:54:21,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5345.
[2023-11-29 06:54:21,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5345 states, 5344 states have (on average 1.6727170658682635) internal successors, (8939), 5344 states have internal predecessors, (8939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:21,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8939 transitions.
[2023-11-29 06:54:21,583 INFO  L78                 Accepts]: Start accepts. Automaton has 5345 states and 8939 transitions. Word has length 3330
[2023-11-29 06:54:21,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:21,585 INFO  L495      AbstractCegarLoop]: Abstraction has 5345 states and 8939 transitions.
[2023-11-29 06:54:21,586 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:21,586 INFO  L276                IsEmpty]: Start isEmpty. Operand 5345 states and 8939 transitions.
[2023-11-29 06:54:21,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:21,642 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:21,644 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:21,679 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-29 06:54:21,844 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 06:54:21,845 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:21,845 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:21,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 1524597434, now seen corresponding path program 1 times
[2023-11-29 06:54:21,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:21,846 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490079098]
[2023-11-29 06:54:21,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:21,846 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:22,129 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:22,129 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31791336]
[2023-11-29 06:54:22,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:22,130 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:22,130 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:22,130 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:22,131 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 06:54:25,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:25,661 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15659 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:25,718 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:25,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:25,806 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:25,806 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:25,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490079098]
[2023-11-29 06:54:25,806 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:25,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31791336]
[2023-11-29 06:54:25,806 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [31791336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:25,806 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:25,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:25,808 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052107547]
[2023-11-29 06:54:25,808 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:25,811 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:25,811 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:25,815 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:25,815 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:25,816 INFO  L87              Difference]: Start difference. First operand 5345 states and 8939 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:25,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:25,950 INFO  L93              Difference]: Finished difference Result 10065 states and 16836 transitions.
[2023-11-29 06:54:25,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:25,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:25,954 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:25,959 INFO  L225             Difference]: With dead ends: 10065
[2023-11-29 06:54:25,959 INFO  L226             Difference]: Without dead ends: 5354
[2023-11-29 06:54:25,962 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:25,963 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:25,963 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:25,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5354 states.
[2023-11-29 06:54:26,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5346.
[2023-11-29 06:54:26,011 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5346 states, 5345 states have (on average 1.6725912067352666) internal successors, (8940), 5345 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:26,017 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 8940 transitions.
[2023-11-29 06:54:26,017 INFO  L78                 Accepts]: Start accepts. Automaton has 5346 states and 8940 transitions. Word has length 3330
[2023-11-29 06:54:26,019 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:26,019 INFO  L495      AbstractCegarLoop]: Abstraction has 5346 states and 8940 transitions.
[2023-11-29 06:54:26,019 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:26,019 INFO  L276                IsEmpty]: Start isEmpty. Operand 5346 states and 8940 transitions.
[2023-11-29 06:54:26,068 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:26,068 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:26,071 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:26,109 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 06:54:26,272 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 06:54:26,272 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:26,272 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:26,274 INFO  L85        PathProgramCache]: Analyzing trace with hash 1041844232, now seen corresponding path program 1 times
[2023-11-29 06:54:26,274 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:26,274 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926250598]
[2023-11-29 06:54:26,274 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:26,274 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:26,555 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:26,555 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329820794]
[2023-11-29 06:54:26,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:26,556 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:26,556 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:26,557 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:26,558 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 06:54:30,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:30,092 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15660 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:30,132 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:30,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:30,195 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:30,196 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:30,196 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926250598]
[2023-11-29 06:54:30,196 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:30,196 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329820794]
[2023-11-29 06:54:30,196 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329820794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:30,196 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:30,197 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:30,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932031408]
[2023-11-29 06:54:30,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:30,202 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:30,202 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:30,205 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:30,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:30,207 INFO  L87              Difference]: Start difference. First operand 5346 states and 8940 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:30,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:30,315 INFO  L93              Difference]: Finished difference Result 10067 states and 16838 transitions.
[2023-11-29 06:54:30,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:30,316 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:30,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:30,321 INFO  L225             Difference]: With dead ends: 10067
[2023-11-29 06:54:30,321 INFO  L226             Difference]: Without dead ends: 5355
[2023-11-29 06:54:30,324 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:30,325 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:30,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:30,330 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5355 states.
[2023-11-29 06:54:30,362 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 5347.
[2023-11-29 06:54:30,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5347 states, 5346 states have (on average 1.672465394687617) internal successors, (8941), 5346 states have internal predecessors, (8941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:30,372 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 8941 transitions.
[2023-11-29 06:54:30,372 INFO  L78                 Accepts]: Start accepts. Automaton has 5347 states and 8941 transitions. Word has length 3330
[2023-11-29 06:54:30,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:30,374 INFO  L495      AbstractCegarLoop]: Abstraction has 5347 states and 8941 transitions.
[2023-11-29 06:54:30,375 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:30,375 INFO  L276                IsEmpty]: Start isEmpty. Operand 5347 states and 8941 transitions.
[2023-11-29 06:54:30,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:30,422 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:30,424 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:30,460 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 06:54:30,624 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:30,625 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:30,625 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:30,627 INFO  L85        PathProgramCache]: Analyzing trace with hash 1641784406, now seen corresponding path program 1 times
[2023-11-29 06:54:30,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:30,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033648178]
[2023-11-29 06:54:30,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:30,628 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:30,959 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:30,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003635396]
[2023-11-29 06:54:30,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:30,961 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:30,961 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:30,962 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:30,963 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 06:54:34,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:34,343 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15661 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 06:54:34,380 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:34,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:54:34,461 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 06:54:34,461 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:34,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033648178]
[2023-11-29 06:54:34,461 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:34,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003635396]
[2023-11-29 06:54:34,462 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003635396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:54:34,462 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:54:34,463 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 06:54:34,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745444368]
[2023-11-29 06:54:34,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:34,465 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 06:54:34,466 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:34,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 06:54:34,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:34,469 INFO  L87              Difference]: Start difference. First operand 5347 states and 8941 transitions. Second operand  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:34,581 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:34,582 INFO  L93              Difference]: Finished difference Result 10069 states and 16840 transitions.
[2023-11-29 06:54:34,582 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 06:54:34,583 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:34,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:34,589 INFO  L225             Difference]: With dead ends: 10069
[2023-11-29 06:54:34,589 INFO  L226             Difference]: Without dead ends: 5356
[2023-11-29 06:54:34,592 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 06:54:34,592 INFO  L413           NwaCegarLoop]: 8123 mSDtfsCounter, 12 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:34,592 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 06:54:34,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5356 states.
[2023-11-29 06:54:34,635 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5348.
[2023-11-29 06:54:34,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5348 states, 5347 states have (on average 1.6723396296988966) internal successors, (8942), 5347 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:34,646 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 8942 transitions.
[2023-11-29 06:54:34,646 INFO  L78                 Accepts]: Start accepts. Automaton has 5348 states and 8942 transitions. Word has length 3330
[2023-11-29 06:54:34,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:34,648 INFO  L495      AbstractCegarLoop]: Abstraction has 5348 states and 8942 transitions.
[2023-11-29 06:54:34,649 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 832.5) internal successors, (3330), 4 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:34,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 5348 states and 8942 transitions.
[2023-11-29 06:54:34,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3331
[2023-11-29 06:54:34,700 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:34,701 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:54:34,741 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 06:54:34,902 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:34,902 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:34,902 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:34,904 INFO  L85        PathProgramCache]: Analyzing trace with hash 454941220, now seen corresponding path program 1 times
[2023-11-29 06:54:34,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:34,904 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002296589]
[2023-11-29 06:54:34,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:34,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:35,180 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:35,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074112500]
[2023-11-29 06:54:35,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:35,181 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:35,182 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:35,182 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:35,183 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 06:54:38,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:38,588 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15662 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:54:38,657 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:39,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 255 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2023-11-29 06:54:39,171 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:54:39,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-11-29 06:54:39,315 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:39,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002296589]
[2023-11-29 06:54:39,315 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:39,315 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074112500]
[2023-11-29 06:54:39,315 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074112500] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:54:39,315 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:54:39,317 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:54:39,318 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366068932]
[2023-11-29 06:54:39,318 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:39,321 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:54:39,321 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:39,325 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:54:39,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:54:39,326 INFO  L87              Difference]: Start difference. First operand 5348 states and 8942 transitions. Second operand  has 5 states, 5 states have (on average 603.8) internal successors, (3019), 5 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:42,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:42,992 INFO  L93              Difference]: Finished difference Result 19222 states and 32071 transitions.
[2023-11-29 06:54:42,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:54:42,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 603.8) internal successors, (3019), 5 states have internal predecessors, (3019), 0 states have call successors, (0), 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 3330
[2023-11-29 06:54:42,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:43,003 INFO  L225             Difference]: With dead ends: 19222
[2023-11-29 06:54:43,003 INFO  L226             Difference]: Without dead ends: 10049
[2023-11-29 06:54:43,009 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6659 GetRequests, 6650 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:54:43,009 INFO  L413           NwaCegarLoop]: 14693 mSDtfsCounter, 22004 mSDsluCounter, 14482 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22004 SdHoareTripleChecker+Valid, 29175 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:43,009 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22004 Valid, 29175 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-29 06:54:43,017 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10049 states.
[2023-11-29 06:54:43,067 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10049 to 5350.
[2023-11-29 06:54:43,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5350 states, 5349 states have (on average 1.6720882407926716) internal successors, (8944), 5349 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:43,078 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 8944 transitions.
[2023-11-29 06:54:43,078 INFO  L78                 Accepts]: Start accepts. Automaton has 5350 states and 8944 transitions. Word has length 3330
[2023-11-29 06:54:43,080 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:43,080 INFO  L495      AbstractCegarLoop]: Abstraction has 5350 states and 8944 transitions.
[2023-11-29 06:54:43,081 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 603.8) internal successors, (3019), 5 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:43,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 5350 states and 8944 transitions.
[2023-11-29 06:54:43,125 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3332
[2023-11-29 06:54:43,126 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:43,127 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:43,164 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 06:54:43,328 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:43,328 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:43,328 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:43,329 INFO  L85        PathProgramCache]: Analyzing trace with hash -622724918, now seen corresponding path program 1 times
[2023-11-29 06:54:43,329 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:43,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350880496]
[2023-11-29 06:54:43,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:43,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:43,616 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:43,616 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749977623]
[2023-11-29 06:54:43,617 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:43,617 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:43,617 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:43,618 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:43,619 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 06:54:46,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:46,986 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15665 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:54:47,032 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:47,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2023-11-29 06:54:47,430 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:54:47,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked.
[2023-11-29 06:54:47,535 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:47,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350880496]
[2023-11-29 06:54:47,535 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:47,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749977623]
[2023-11-29 06:54:47,536 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749977623] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:54:47,536 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:54:47,537 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:54:47,537 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865427518]
[2023-11-29 06:54:47,538 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:47,540 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:54:47,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:47,542 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:54:47,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:54:47,543 INFO  L87              Difference]: Start difference. First operand 5350 states and 8944 transitions. Second operand  has 5 states, 5 states have (on average 604.4) internal successors, (3022), 5 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:51,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:54:51,643 INFO  L93              Difference]: Finished difference Result 19230 states and 32079 transitions.
[2023-11-29 06:54:51,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:54:51,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 604.4) internal successors, (3022), 5 states have internal predecessors, (3022), 0 states have call successors, (0), 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 3331
[2023-11-29 06:54:51,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:54:51,654 INFO  L225             Difference]: With dead ends: 19230
[2023-11-29 06:54:51,654 INFO  L226             Difference]: Without dead ends: 10050
[2023-11-29 06:54:51,659 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6661 GetRequests, 6652 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:54:51,660 INFO  L413           NwaCegarLoop]: 14685 mSDtfsCounter, 14918 mSDsluCounter, 21950 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14918 SdHoareTripleChecker+Valid, 36635 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 06:54:51,660 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14918 Valid, 36635 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 06:54:51,670 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10050 states.
[2023-11-29 06:54:51,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 5352.
[2023-11-29 06:54:51,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5352 states, 5351 states have (on average 1.671837039805644) internal successors, (8946), 5351 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:51,743 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 8946 transitions.
[2023-11-29 06:54:51,743 INFO  L78                 Accepts]: Start accepts. Automaton has 5352 states and 8946 transitions. Word has length 3331
[2023-11-29 06:54:51,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:54:51,745 INFO  L495      AbstractCegarLoop]: Abstraction has 5352 states and 8946 transitions.
[2023-11-29 06:54:51,746 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 604.4) internal successors, (3022), 5 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:54:51,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 5352 states and 8946 transitions.
[2023-11-29 06:54:51,795 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3333
[2023-11-29 06:54:51,795 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:54:51,797 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:54:51,835 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 06:54:51,997 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:51,998 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:54:51,998 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:54:51,999 INFO  L85        PathProgramCache]: Analyzing trace with hash -926418038, now seen corresponding path program 1 times
[2023-11-29 06:54:51,999 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:54:51,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674321842]
[2023-11-29 06:54:52,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:52,000 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:54:52,282 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:54:52,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010870376]
[2023-11-29 06:54:52,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:54:52,283 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:54:52,283 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:54:52,284 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:54:52,285 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 06:54:55,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:54:55,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15668 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:54:55,881 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:54:56,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 16 proven. 255 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2023-11-29 06:54:56,249 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:54:56,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-11-29 06:54:56,420 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:54:56,420 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674321842]
[2023-11-29 06:54:56,420 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:54:56,420 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010870376]
[2023-11-29 06:54:56,420 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010870376] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:54:56,420 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:54:56,423 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 06:54:56,423 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006175178]
[2023-11-29 06:54:56,423 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:54:56,427 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 06:54:56,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:54:56,430 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 06:54:56,430 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 06:54:56,432 INFO  L87              Difference]: Start difference. First operand 5352 states and 8946 transitions. Second operand  has 6 states, 6 states have (on average 504.1666666666667) internal successors, (3025), 6 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:02,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:02,939 INFO  L93              Difference]: Finished difference Result 23965 states and 39992 transitions.
[2023-11-29 06:55:02,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 06:55:02,940 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 504.1666666666667) internal successors, (3025), 6 states have internal predecessors, (3025), 0 states have call successors, (0), 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 3332
[2023-11-29 06:55:02,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:02,951 INFO  L225             Difference]: With dead ends: 23965
[2023-11-29 06:55:02,951 INFO  L226             Difference]: Without dead ends: 14778
[2023-11-29 06:55:02,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6664 GetRequests, 6652 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:55:02,955 INFO  L413           NwaCegarLoop]: 14679 mSDtfsCounter, 29850 mSDsluCounter, 35590 mSDsCounter, 0 mSdLazyCounter, 8116 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29850 SdHoareTripleChecker+Valid, 50269 SdHoareTripleChecker+Invalid, 8375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 8116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:02,955 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29850 Valid, 50269 Invalid, 8375 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [259 Valid, 8116 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2023-11-29 06:55:02,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14778 states.
[2023-11-29 06:55:03,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14778 to 5354.
[2023-11-29 06:55:03,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5354 states, 5353 states have (on average 1.671586026527181) internal successors, (8948), 5353 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:03,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 8948 transitions.
[2023-11-29 06:55:03,035 INFO  L78                 Accepts]: Start accepts. Automaton has 5354 states and 8948 transitions. Word has length 3332
[2023-11-29 06:55:03,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:03,037 INFO  L495      AbstractCegarLoop]: Abstraction has 5354 states and 8948 transitions.
[2023-11-29 06:55:03,038 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 504.1666666666667) internal successors, (3025), 6 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:03,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 5354 states and 8948 transitions.
[2023-11-29 06:55:03,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3334
[2023-11-29 06:55:03,085 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:03,087 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:55:03,123 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 06:55:03,287 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:03,288 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:03,288 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:03,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 871666790, now seen corresponding path program 1 times
[2023-11-29 06:55:03,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:03,289 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343861443]
[2023-11-29 06:55:03,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:03,290 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:03,585 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:03,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708371933]
[2023-11-29 06:55:03,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:03,586 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:03,586 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:03,587 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:03,588 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 06:55:07,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:07,177 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15672 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:07,218 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:07,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2023-11-29 06:55:07,600 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:07,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked.
[2023-11-29 06:55:07,702 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:07,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343861443]
[2023-11-29 06:55:07,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:07,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708371933]
[2023-11-29 06:55:07,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708371933] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:07,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:07,704 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:07,704 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428100590]
[2023-11-29 06:55:07,704 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:07,707 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:07,707 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:07,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:07,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:07,711 INFO  L87              Difference]: Start difference. First operand 5354 states and 8948 transitions. Second operand  has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:11,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:11,576 INFO  L93              Difference]: Finished difference Result 19246 states and 32095 transitions.
[2023-11-29 06:55:11,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:11,577 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 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 3333
[2023-11-29 06:55:11,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:11,587 INFO  L225             Difference]: With dead ends: 19246
[2023-11-29 06:55:11,587 INFO  L226             Difference]: Without dead ends: 10052
[2023-11-29 06:55:11,593 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6665 GetRequests, 6656 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:11,594 INFO  L413           NwaCegarLoop]: 14669 mSDtfsCounter, 14913 mSDsluCounter, 21274 mSDsCounter, 0 mSdLazyCounter, 4875 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14913 SdHoareTripleChecker+Valid, 35943 SdHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:11,594 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14913 Valid, 35943 Invalid, 5132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4875 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-29 06:55:11,602 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10052 states.
[2023-11-29 06:55:11,653 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10052 to 5356.
[2023-11-29 06:55:11,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5356 states, 5355 states have (on average 1.6713352007469655) internal successors, (8950), 5355 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:11,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 8950 transitions.
[2023-11-29 06:55:11,664 INFO  L78                 Accepts]: Start accepts. Automaton has 5356 states and 8950 transitions. Word has length 3333
[2023-11-29 06:55:11,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:11,666 INFO  L495      AbstractCegarLoop]: Abstraction has 5356 states and 8950 transitions.
[2023-11-29 06:55:11,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:11,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 5356 states and 8950 transitions.
[2023-11-29 06:55:11,711 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3335
[2023-11-29 06:55:11,711 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:11,713 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:55:11,749 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 06:55:11,913 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:11,913 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:11,914 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:11,915 INFO  L85        PathProgramCache]: Analyzing trace with hash -1842337550, now seen corresponding path program 1 times
[2023-11-29 06:55:11,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:11,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191455207]
[2023-11-29 06:55:11,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:11,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:12,268 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:12,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347933745]
[2023-11-29 06:55:12,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:12,270 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:12,270 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:12,271 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:12,272 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 06:55:15,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:15,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15675 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:15,879 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:16,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 20 proven. 255 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2023-11-29 06:55:16,245 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:16,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-11-29 06:55:16,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:16,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191455207]
[2023-11-29 06:55:16,345 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:16,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347933745]
[2023-11-29 06:55:16,346 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [347933745] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:16,346 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:16,348 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:16,348 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038375723]
[2023-11-29 06:55:16,348 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:16,350 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:16,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:16,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:16,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:16,353 INFO  L87              Difference]: Start difference. First operand 5356 states and 8950 transitions. Second operand  has 5 states, 5 states have (on average 606.2) internal successors, (3031), 5 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:19,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:19,874 INFO  L93              Difference]: Finished difference Result 19254 states and 32103 transitions.
[2023-11-29 06:55:19,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:19,876 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 606.2) internal successors, (3031), 5 states have internal predecessors, (3031), 0 states have call successors, (0), 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 3334
[2023-11-29 06:55:19,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:19,886 INFO  L225             Difference]: With dead ends: 19254
[2023-11-29 06:55:19,886 INFO  L226             Difference]: Without dead ends: 10053
[2023-11-29 06:55:19,891 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6667 GetRequests, 6658 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:19,892 INFO  L413           NwaCegarLoop]: 14661 mSDtfsCounter, 21964 mSDsluCounter, 14463 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21964 SdHoareTripleChecker+Valid, 29124 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:19,892 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21964 Valid, 29124 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:55:19,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10053 states.
[2023-11-29 06:55:19,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 5358.
[2023-11-29 06:55:19,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5358 states, 5357 states have (on average 1.6710845622549935) internal successors, (8952), 5357 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:19,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 8952 transitions.
[2023-11-29 06:55:19,965 INFO  L78                 Accepts]: Start accepts. Automaton has 5358 states and 8952 transitions. Word has length 3334
[2023-11-29 06:55:19,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:19,968 INFO  L495      AbstractCegarLoop]: Abstraction has 5358 states and 8952 transitions.
[2023-11-29 06:55:19,968 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 606.2) internal successors, (3031), 5 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:19,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 5358 states and 8952 transitions.
[2023-11-29 06:55:20,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3336
[2023-11-29 06:55:20,016 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:20,018 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:55:20,056 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-11-29 06:55:20,218 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:20,218 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:20,219 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:20,220 INFO  L85        PathProgramCache]: Analyzing trace with hash -432688128, now seen corresponding path program 1 times
[2023-11-29 06:55:20,220 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:20,220 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603769617]
[2023-11-29 06:55:20,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:20,220 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:20,530 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:20,531 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348865290]
[2023-11-29 06:55:20,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:20,532 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:20,532 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:20,533 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:20,534 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 06:55:24,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:24,101 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15678 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:24,141 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:24,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 22 proven. 255 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2023-11-29 06:55:24,555 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:24,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked.
[2023-11-29 06:55:24,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:24,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603769617]
[2023-11-29 06:55:24,684 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:24,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348865290]
[2023-11-29 06:55:24,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [348865290] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:24,684 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:24,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:24,687 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106847286]
[2023-11-29 06:55:24,687 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:24,691 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:24,691 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:24,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:24,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:24,696 INFO  L87              Difference]: Start difference. First operand 5358 states and 8952 transitions. Second operand  has 5 states, 5 states have (on average 606.8) internal successors, (3034), 5 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:28,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:28,312 INFO  L93              Difference]: Finished difference Result 19262 states and 32111 transitions.
[2023-11-29 06:55:28,312 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:28,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 606.8) internal successors, (3034), 5 states have internal predecessors, (3034), 0 states have call successors, (0), 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 3335
[2023-11-29 06:55:28,315 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:28,322 INFO  L225             Difference]: With dead ends: 19262
[2023-11-29 06:55:28,322 INFO  L226             Difference]: Without dead ends: 10054
[2023-11-29 06:55:28,327 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6669 GetRequests, 6660 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:28,328 INFO  L413           NwaCegarLoop]: 14653 mSDtfsCounter, 21964 mSDsluCounter, 14457 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21964 SdHoareTripleChecker+Valid, 29110 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:28,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21964 Valid, 29110 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-29 06:55:28,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10054 states.
[2023-11-29 06:55:28,377 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 5360.
[2023-11-29 06:55:28,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5360 states, 5359 states have (on average 1.670834110841575) internal successors, (8954), 5359 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:28,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8954 transitions.
[2023-11-29 06:55:28,387 INFO  L78                 Accepts]: Start accepts. Automaton has 5360 states and 8954 transitions. Word has length 3335
[2023-11-29 06:55:28,388 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:28,388 INFO  L495      AbstractCegarLoop]: Abstraction has 5360 states and 8954 transitions.
[2023-11-29 06:55:28,389 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 606.8) internal successors, (3034), 5 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:28,389 INFO  L276                IsEmpty]: Start isEmpty. Operand 5360 states and 8954 transitions.
[2023-11-29 06:55:28,433 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3337
[2023-11-29 06:55:28,433 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:28,434 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:55:28,471 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 06:55:28,634 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:28,635 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:28,635 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:28,636 INFO  L85        PathProgramCache]: Analyzing trace with hash -840167848, now seen corresponding path program 1 times
[2023-11-29 06:55:28,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:28,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106437809]
[2023-11-29 06:55:28,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:28,637 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:28,905 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:28,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379873077]
[2023-11-29 06:55:28,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:28,906 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:28,906 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:28,907 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:28,909 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 06:55:32,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:32,493 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15681 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:32,548 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:32,924 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 24 proven. 255 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2023-11-29 06:55:32,924 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:33,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-11-29 06:55:33,036 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:33,036 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106437809]
[2023-11-29 06:55:33,036 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:33,037 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379873077]
[2023-11-29 06:55:33,037 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [379873077] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:33,037 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:33,039 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:33,039 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266493675]
[2023-11-29 06:55:33,039 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:33,042 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:33,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:33,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:33,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:33,045 INFO  L87              Difference]: Start difference. First operand 5360 states and 8954 transitions. Second operand  has 5 states, 5 states have (on average 607.4) internal successors, (3037), 5 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:36,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:36,609 INFO  L93              Difference]: Finished difference Result 19270 states and 32119 transitions.
[2023-11-29 06:55:36,609 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:36,610 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 607.4) internal successors, (3037), 5 states have internal predecessors, (3037), 0 states have call successors, (0), 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 3336
[2023-11-29 06:55:36,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:36,620 INFO  L225             Difference]: With dead ends: 19270
[2023-11-29 06:55:36,620 INFO  L226             Difference]: Without dead ends: 10055
[2023-11-29 06:55:36,625 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6671 GetRequests, 6662 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:36,625 INFO  L413           NwaCegarLoop]: 14645 mSDtfsCounter, 21946 mSDsluCounter, 14453 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21946 SdHoareTripleChecker+Valid, 29098 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:36,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21946 Valid, 29098 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:55:36,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10055 states.
[2023-11-29 06:55:36,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 5362.
[2023-11-29 06:55:36,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5362 states, 5361 states have (on average 1.6705838462973326) internal successors, (8956), 5361 states have internal predecessors, (8956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:36,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 8956 transitions.
[2023-11-29 06:55:36,721 INFO  L78                 Accepts]: Start accepts. Automaton has 5362 states and 8956 transitions. Word has length 3336
[2023-11-29 06:55:36,723 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:36,723 INFO  L495      AbstractCegarLoop]: Abstraction has 5362 states and 8956 transitions.
[2023-11-29 06:55:36,724 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 607.4) internal successors, (3037), 5 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:36,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 5362 states and 8956 transitions.
[2023-11-29 06:55:36,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3338
[2023-11-29 06:55:36,775 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:36,777 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:55:36,823 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 06:55:36,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2023-11-29 06:55:36,978 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:36,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:36,980 INFO  L85        PathProgramCache]: Analyzing trace with hash 819902620, now seen corresponding path program 1 times
[2023-11-29 06:55:36,980 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:36,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932300131]
[2023-11-29 06:55:36,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:36,982 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:37,354 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:37,355 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915922063]
[2023-11-29 06:55:37,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:37,356 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:37,356 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:37,357 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:37,358 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 06:55:40,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:41,001 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15685 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:41,057 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:41,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 26 proven. 255 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2023-11-29 06:55:41,417 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:41,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2023-11-29 06:55:41,547 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:41,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932300131]
[2023-11-29 06:55:41,547 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:41,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915922063]
[2023-11-29 06:55:41,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [915922063] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:41,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:41,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:41,551 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830277036]
[2023-11-29 06:55:41,551 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:41,554 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:41,554 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:41,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:41,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:41,558 INFO  L87              Difference]: Start difference. First operand 5362 states and 8956 transitions. Second operand  has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:45,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:45,680 INFO  L93              Difference]: Finished difference Result 19278 states and 32127 transitions.
[2023-11-29 06:55:45,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:45,682 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 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 3337
[2023-11-29 06:55:45,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:45,694 INFO  L225             Difference]: With dead ends: 19278
[2023-11-29 06:55:45,694 INFO  L226             Difference]: Without dead ends: 10056
[2023-11-29 06:55:45,700 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6673 GetRequests, 6664 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:45,700 INFO  L413           NwaCegarLoop]: 14637 mSDtfsCounter, 14882 mSDsluCounter, 21890 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14882 SdHoareTripleChecker+Valid, 36527 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:45,701 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14882 Valid, 36527 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 06:55:45,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10056 states.
[2023-11-29 06:55:45,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 5364.
[2023-11-29 06:55:45,782 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5364 states, 5363 states have (on average 1.6703337684132016) internal successors, (8958), 5363 states have internal predecessors, (8958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:45,788 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 8958 transitions.
[2023-11-29 06:55:45,788 INFO  L78                 Accepts]: Start accepts. Automaton has 5364 states and 8958 transitions. Word has length 3337
[2023-11-29 06:55:45,789 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:45,790 INFO  L495      AbstractCegarLoop]: Abstraction has 5364 states and 8958 transitions.
[2023-11-29 06:55:45,790 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:45,790 INFO  L276                IsEmpty]: Start isEmpty. Operand 5364 states and 8958 transitions.
[2023-11-29 06:55:45,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3339
[2023-11-29 06:55:45,840 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:45,841 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:55:45,881 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 06:55:46,041 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:46,042 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:46,042 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:46,042 INFO  L85        PathProgramCache]: Analyzing trace with hash 1388498112, now seen corresponding path program 1 times
[2023-11-29 06:55:46,042 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:46,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520987108]
[2023-11-29 06:55:46,043 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:46,043 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:46,317 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:46,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954487043]
[2023-11-29 06:55:46,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:46,318 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:46,318 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:46,319 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:46,320 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 06:55:49,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:49,919 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15688 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:49,972 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:50,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 255 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2023-11-29 06:55:50,359 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:50,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked.
[2023-11-29 06:55:50,469 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:50,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520987108]
[2023-11-29 06:55:50,470 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:50,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954487043]
[2023-11-29 06:55:50,470 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954487043] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:50,470 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:50,472 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:50,473 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334554291]
[2023-11-29 06:55:50,473 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:50,474 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:50,475 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:50,477 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:50,477 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:50,478 INFO  L87              Difference]: Start difference. First operand 5364 states and 8958 transitions. Second operand  has 5 states, 5 states have (on average 608.6) internal successors, (3043), 5 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:54,586 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:55:54,586 INFO  L93              Difference]: Finished difference Result 19286 states and 32135 transitions.
[2023-11-29 06:55:54,587 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:55:54,588 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 608.6) internal successors, (3043), 5 states have internal predecessors, (3043), 0 states have call successors, (0), 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 3338
[2023-11-29 06:55:54,590 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:55:54,598 INFO  L225             Difference]: With dead ends: 19286
[2023-11-29 06:55:54,598 INFO  L226             Difference]: Without dead ends: 10057
[2023-11-29 06:55:54,603 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6675 GetRequests, 6666 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:55:54,604 INFO  L413           NwaCegarLoop]: 14629 mSDtfsCounter, 14876 mSDsluCounter, 21880 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14876 SdHoareTripleChecker+Valid, 36509 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 06:55:54,604 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14876 Valid, 36509 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 06:55:54,612 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10057 states.
[2023-11-29 06:55:54,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10057 to 5366.
[2023-11-29 06:55:54,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5366 states, 5365 states have (on average 1.6700838769804287) internal successors, (8960), 5365 states have internal predecessors, (8960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:54,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 8960 transitions.
[2023-11-29 06:55:54,674 INFO  L78                 Accepts]: Start accepts. Automaton has 5366 states and 8960 transitions. Word has length 3338
[2023-11-29 06:55:54,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:55:54,676 INFO  L495      AbstractCegarLoop]: Abstraction has 5366 states and 8960 transitions.
[2023-11-29 06:55:54,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 608.6) internal successors, (3043), 5 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:55:54,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 5366 states and 8960 transitions.
[2023-11-29 06:55:54,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3340
[2023-11-29 06:55:54,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:55:54,724 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:55:54,771 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 06:55:54,925 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-11-29 06:55:54,925 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:55:54,925 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:55:54,926 INFO  L85        PathProgramCache]: Analyzing trace with hash 2048488502, now seen corresponding path program 1 times
[2023-11-29 06:55:54,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:55:54,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448701828]
[2023-11-29 06:55:54,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:54,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:55:55,269 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:55:55,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601609064]
[2023-11-29 06:55:55,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:55:55,270 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:55:55,270 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:55:55,270 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:55:55,273 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 06:55:58,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:55:58,776 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15691 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:55:58,810 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:55:59,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 30 proven. 255 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2023-11-29 06:55:59,190 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:55:59,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked.
[2023-11-29 06:55:59,308 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:55:59,308 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448701828]
[2023-11-29 06:55:59,308 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:55:59,308 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601609064]
[2023-11-29 06:55:59,308 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [601609064] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:55:59,308 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:55:59,310 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:55:59,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67697716]
[2023-11-29 06:55:59,310 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:55:59,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:55:59,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:55:59,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:55:59,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:55:59,316 INFO  L87              Difference]: Start difference. First operand 5366 states and 8960 transitions. Second operand  has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:02,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:02,755 INFO  L93              Difference]: Finished difference Result 19294 states and 32143 transitions.
[2023-11-29 06:56:02,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:02,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 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 3339
[2023-11-29 06:56:02,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:02,764 INFO  L225             Difference]: With dead ends: 19294
[2023-11-29 06:56:02,764 INFO  L226             Difference]: Without dead ends: 10058
[2023-11-29 06:56:02,767 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6677 GetRequests, 6668 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:02,768 INFO  L413           NwaCegarLoop]: 14621 mSDtfsCounter, 21932 mSDsluCounter, 14437 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21932 SdHoareTripleChecker+Valid, 29058 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:02,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21932 Valid, 29058 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:56:02,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10058 states.
[2023-11-29 06:56:02,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 5368.
[2023-11-29 06:56:02,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5368 states, 5367 states have (on average 1.669834171790572) internal successors, (8962), 5367 states have internal predecessors, (8962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:02,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 8962 transitions.
[2023-11-29 06:56:02,830 INFO  L78                 Accepts]: Start accepts. Automaton has 5368 states and 8962 transitions. Word has length 3339
[2023-11-29 06:56:02,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:02,832 INFO  L495      AbstractCegarLoop]: Abstraction has 5368 states and 8962 transitions.
[2023-11-29 06:56:02,832 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:02,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 5368 states and 8962 transitions.
[2023-11-29 06:56:02,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3341
[2023-11-29 06:56:02,876 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:02,877 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 06:56:02,915 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 06:56:03,077 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-11-29 06:56:03,078 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:03,078 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:03,079 INFO  L85        PathProgramCache]: Analyzing trace with hash 1860957734, now seen corresponding path program 1 times
[2023-11-29 06:56:03,079 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:03,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788942724]
[2023-11-29 06:56:03,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:03,080 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:03,439 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:03,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301690172]
[2023-11-29 06:56:03,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:03,440 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:03,440 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:03,440 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:03,441 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 06:56:06,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:06,880 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15694 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:06,914 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:07,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 32 proven. 255 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2023-11-29 06:56:07,293 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:07,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2023-11-29 06:56:07,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:07,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788942724]
[2023-11-29 06:56:07,401 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:07,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301690172]
[2023-11-29 06:56:07,401 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301690172] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:07,401 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:07,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:07,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757169382]
[2023-11-29 06:56:07,403 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:07,405 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:07,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:07,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:07,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:07,408 INFO  L87              Difference]: Start difference. First operand 5368 states and 8962 transitions. Second operand  has 5 states, 5 states have (on average 609.8) internal successors, (3049), 5 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:11,283 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:11,283 INFO  L93              Difference]: Finished difference Result 19302 states and 32151 transitions.
[2023-11-29 06:56:11,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:11,284 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 609.8) internal successors, (3049), 5 states have internal predecessors, (3049), 0 states have call successors, (0), 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 3340
[2023-11-29 06:56:11,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:11,294 INFO  L225             Difference]: With dead ends: 19302
[2023-11-29 06:56:11,294 INFO  L226             Difference]: Without dead ends: 10059
[2023-11-29 06:56:11,299 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6679 GetRequests, 6670 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:11,300 INFO  L413           NwaCegarLoop]: 14613 mSDtfsCounter, 14864 mSDsluCounter, 21860 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14864 SdHoareTripleChecker+Valid, 36473 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:11,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14864 Valid, 36473 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:56:11,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10059 states.
[2023-11-29 06:56:11,352 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10059 to 5370.
[2023-11-29 06:56:11,356 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5370 states, 5369 states have (on average 1.6695846526355) internal successors, (8964), 5369 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:11,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 8964 transitions.
[2023-11-29 06:56:11,362 INFO  L78                 Accepts]: Start accepts. Automaton has 5370 states and 8964 transitions. Word has length 3340
[2023-11-29 06:56:11,364 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:11,364 INFO  L495      AbstractCegarLoop]: Abstraction has 5370 states and 8964 transitions.
[2023-11-29 06:56:11,365 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 609.8) internal successors, (3049), 5 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:11,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 5370 states and 8964 transitions.
[2023-11-29 06:56:11,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3342
[2023-11-29 06:56:11,408 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:11,409 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 06:56:11,449 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-11-29 06:56:11,609 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-11-29 06:56:11,610 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:11,610 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:11,611 INFO  L85        PathProgramCache]: Analyzing trace with hash -1940790830, now seen corresponding path program 1 times
[2023-11-29 06:56:11,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:11,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741079791]
[2023-11-29 06:56:11,611 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:11,611 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:11,881 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:11,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14368683]
[2023-11-29 06:56:11,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:11,882 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:11,882 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:11,882 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:11,883 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-11-29 06:56:15,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:15,389 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15698 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:15,421 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:15,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 34 proven. 255 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2023-11-29 06:56:15,757 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:15,877 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-11-29 06:56:15,878 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:15,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741079791]
[2023-11-29 06:56:15,878 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:15,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14368683]
[2023-11-29 06:56:15,878 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [14368683] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:15,878 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:15,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:15,881 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546443710]
[2023-11-29 06:56:15,881 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:15,882 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:15,883 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:15,884 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:15,884 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:15,885 INFO  L87              Difference]: Start difference. First operand 5370 states and 8964 transitions. Second operand  has 5 states, 5 states have (on average 610.4) internal successors, (3052), 5 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:19,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:19,388 INFO  L93              Difference]: Finished difference Result 19310 states and 32159 transitions.
[2023-11-29 06:56:19,388 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:19,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 610.4) internal successors, (3052), 5 states have internal predecessors, (3052), 0 states have call successors, (0), 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 3341
[2023-11-29 06:56:19,391 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:19,399 INFO  L225             Difference]: With dead ends: 19310
[2023-11-29 06:56:19,399 INFO  L226             Difference]: Without dead ends: 10060
[2023-11-29 06:56:19,403 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6681 GetRequests, 6672 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:19,404 INFO  L413           NwaCegarLoop]: 14605 mSDtfsCounter, 21916 mSDsluCounter, 14427 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21916 SdHoareTripleChecker+Valid, 29032 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:19,404 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21916 Valid, 29032 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:56:19,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10060 states.
[2023-11-29 06:56:19,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10060 to 5372.
[2023-11-29 06:56:19,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5372 states, 5371 states have (on average 1.6693353193073917) internal successors, (8966), 5371 states have internal predecessors, (8966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:19,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8966 transitions.
[2023-11-29 06:56:19,467 INFO  L78                 Accepts]: Start accepts. Automaton has 5372 states and 8966 transitions. Word has length 3341
[2023-11-29 06:56:19,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:19,469 INFO  L495      AbstractCegarLoop]: Abstraction has 5372 states and 8966 transitions.
[2023-11-29 06:56:19,469 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 610.4) internal successors, (3052), 5 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:19,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 5372 states and 8966 transitions.
[2023-11-29 06:56:19,513 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3343
[2023-11-29 06:56:19,513 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:19,514 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:56:19,556 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-11-29 06:56:19,719 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-11-29 06:56:19,719 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:19,719 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:19,720 INFO  L85        PathProgramCache]: Analyzing trace with hash -1855896178, now seen corresponding path program 1 times
[2023-11-29 06:56:19,720 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:19,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815685838]
[2023-11-29 06:56:19,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:19,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:20,002 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:20,002 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124580016]
[2023-11-29 06:56:20,002 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:20,002 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:20,003 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:20,003 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:20,004 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-11-29 06:56:23,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:23,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15701 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:23,488 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:23,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 36 proven. 255 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2023-11-29 06:56:23,871 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:24,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2023-11-29 06:56:24,124 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:24,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815685838]
[2023-11-29 06:56:24,125 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:24,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124580016]
[2023-11-29 06:56:24,125 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124580016] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:24,125 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:24,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:24,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270267682]
[2023-11-29 06:56:24,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:24,129 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:24,129 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:24,131 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:24,131 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:24,132 INFO  L87              Difference]: Start difference. First operand 5372 states and 8966 transitions. Second operand  has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:27,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:27,538 INFO  L93              Difference]: Finished difference Result 19318 states and 32167 transitions.
[2023-11-29 06:56:27,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:27,539 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 0 states have call successors, (0), 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 3342
[2023-11-29 06:56:27,541 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:27,549 INFO  L225             Difference]: With dead ends: 19318
[2023-11-29 06:56:27,549 INFO  L226             Difference]: Without dead ends: 10061
[2023-11-29 06:56:27,554 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6683 GetRequests, 6674 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:27,554 INFO  L413           NwaCegarLoop]: 14597 mSDtfsCounter, 21892 mSDsluCounter, 14423 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21892 SdHoareTripleChecker+Valid, 29020 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:27,554 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21892 Valid, 29020 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:56:27,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10061 states.
[2023-11-29 06:56:27,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10061 to 5374.
[2023-11-29 06:56:27,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5374 states, 5373 states have (on average 1.6690861715987344) internal successors, (8968), 5373 states have internal predecessors, (8968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:27,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 8968 transitions.
[2023-11-29 06:56:27,617 INFO  L78                 Accepts]: Start accepts. Automaton has 5374 states and 8968 transitions. Word has length 3342
[2023-11-29 06:56:27,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:27,619 INFO  L495      AbstractCegarLoop]: Abstraction has 5374 states and 8968 transitions.
[2023-11-29 06:56:27,619 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:27,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 5374 states and 8968 transitions.
[2023-11-29 06:56:27,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3344
[2023-11-29 06:56:27,663 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:27,664 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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[2023-11-29 06:56:27,704 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-11-29 06:56:27,864 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-11-29 06:56:27,865 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:27,865 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:27,865 INFO  L85        PathProgramCache]: Analyzing trace with hash 1185593708, now seen corresponding path program 1 times
[2023-11-29 06:56:27,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:27,866 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922809433]
[2023-11-29 06:56:27,866 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:27,866 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:28,142 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:28,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035213780]
[2023-11-29 06:56:28,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:28,143 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:28,143 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:28,143 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:28,144 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-11-29 06:56:31,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:31,466 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15704 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:31,498 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:31,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 38 proven. 255 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2023-11-29 06:56:31,850 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:31,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2023-11-29 06:56:31,968 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:31,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922809433]
[2023-11-29 06:56:31,968 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:31,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035213780]
[2023-11-29 06:56:31,968 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035213780] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:31,968 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:31,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:31,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245473070]
[2023-11-29 06:56:31,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:31,972 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:31,972 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:31,974 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:31,974 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:31,975 INFO  L87              Difference]: Start difference. First operand 5374 states and 8968 transitions. Second operand  has 5 states, 5 states have (on average 611.6) internal successors, (3058), 5 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:35,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:35,543 INFO  L93              Difference]: Finished difference Result 19326 states and 32175 transitions.
[2023-11-29 06:56:35,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:35,544 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 611.6) internal successors, (3058), 5 states have internal predecessors, (3058), 0 states have call successors, (0), 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 3343
[2023-11-29 06:56:35,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:35,555 INFO  L225             Difference]: With dead ends: 19326
[2023-11-29 06:56:35,555 INFO  L226             Difference]: Without dead ends: 10062
[2023-11-29 06:56:35,560 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6685 GetRequests, 6676 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:35,560 INFO  L413           NwaCegarLoop]: 14589 mSDtfsCounter, 14863 mSDsluCounter, 21194 mSDsCounter, 0 mSdLazyCounter, 4875 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14863 SdHoareTripleChecker+Valid, 35783 SdHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:35,561 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14863 Valid, 35783 Invalid, 5132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4875 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-11-29 06:56:35,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10062 states.
[2023-11-29 06:56:35,614 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5376.
[2023-11-29 06:56:35,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5376 states, 5375 states have (on average 1.6688372093023256) internal successors, (8970), 5375 states have internal predecessors, (8970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:35,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 8970 transitions.
[2023-11-29 06:56:35,624 INFO  L78                 Accepts]: Start accepts. Automaton has 5376 states and 8970 transitions. Word has length 3343
[2023-11-29 06:56:35,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:35,625 INFO  L495      AbstractCegarLoop]: Abstraction has 5376 states and 8970 transitions.
[2023-11-29 06:56:35,626 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 611.6) internal successors, (3058), 5 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:35,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 5376 states and 8970 transitions.
[2023-11-29 06:56:35,717 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3345
[2023-11-29 06:56:35,717 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:35,718 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-11-29 06:56:35,758 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-11-29 06:56:35,918 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:35,919 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:35,920 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:35,920 INFO  L85        PathProgramCache]: Analyzing trace with hash 1716728564, now seen corresponding path program 1 times
[2023-11-29 06:56:35,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:35,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402855118]
[2023-11-29 06:56:35,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:35,921 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:36,208 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:36,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356835277]
[2023-11-29 06:56:36,208 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:36,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:36,209 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:36,209 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:36,210 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-11-29 06:56:39,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:39,772 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15707 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:39,805 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:40,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 40 proven. 255 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2023-11-29 06:56:40,157 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:40,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-11-29 06:56:40,287 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:40,287 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402855118]
[2023-11-29 06:56:40,287 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:40,287 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356835277]
[2023-11-29 06:56:40,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [356835277] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:40,288 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:40,289 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:40,289 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007899714]
[2023-11-29 06:56:40,289 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:40,291 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:40,291 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:40,293 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:40,293 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:40,294 INFO  L87              Difference]: Start difference. First operand 5376 states and 8970 transitions. Second operand  has 5 states, 5 states have (on average 612.2) internal successors, (3061), 5 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:43,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:43,770 INFO  L93              Difference]: Finished difference Result 19334 states and 32183 transitions.
[2023-11-29 06:56:43,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:43,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 612.2) internal successors, (3061), 5 states have internal predecessors, (3061), 0 states have call successors, (0), 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 3344
[2023-11-29 06:56:43,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:43,781 INFO  L225             Difference]: With dead ends: 19334
[2023-11-29 06:56:43,781 INFO  L226             Difference]: Without dead ends: 10063
[2023-11-29 06:56:43,786 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6687 GetRequests, 6678 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:43,786 INFO  L413           NwaCegarLoop]: 14581 mSDtfsCounter, 21892 mSDsluCounter, 14412 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21892 SdHoareTripleChecker+Valid, 28993 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:43,786 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21892 Valid, 28993 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:56:43,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10063 states.
[2023-11-29 06:56:43,837 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 5378.
[2023-11-29 06:56:43,841 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5378 states, 5377 states have (on average 1.6685884322112703) internal successors, (8972), 5377 states have internal predecessors, (8972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:43,847 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8972 transitions.
[2023-11-29 06:56:43,847 INFO  L78                 Accepts]: Start accepts. Automaton has 5378 states and 8972 transitions. Word has length 3344
[2023-11-29 06:56:43,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:43,849 INFO  L495      AbstractCegarLoop]: Abstraction has 5378 states and 8972 transitions.
[2023-11-29 06:56:43,849 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 612.2) internal successors, (3061), 5 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:43,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 5378 states and 8972 transitions.
[2023-11-29 06:56:43,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3346
[2023-11-29 06:56:43,893 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:43,894 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:56:43,935 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-11-29 06:56:44,095 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:44,095 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:44,095 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:44,096 INFO  L85        PathProgramCache]: Analyzing trace with hash 2108395528, now seen corresponding path program 1 times
[2023-11-29 06:56:44,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:44,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557506555]
[2023-11-29 06:56:44,096 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:44,096 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:44,387 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:44,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996258996]
[2023-11-29 06:56:44,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:44,388 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:44,389 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:44,389 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:44,390 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-11-29 06:56:47,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:47,896 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15711 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:47,930 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:48,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-11-29 06:56:48,300 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:48,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-11-29 06:56:48,434 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:48,434 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557506555]
[2023-11-29 06:56:48,434 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:48,434 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996258996]
[2023-11-29 06:56:48,434 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996258996] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:48,434 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:48,436 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:48,436 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153263129]
[2023-11-29 06:56:48,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:48,438 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:48,438 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:48,441 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:48,441 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:48,442 INFO  L87              Difference]: Start difference. First operand 5378 states and 8972 transitions. Second operand  has 5 states, 5 states have (on average 612.8) internal successors, (3064), 5 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:52,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:56:52,410 INFO  L93              Difference]: Finished difference Result 19342 states and 32191 transitions.
[2023-11-29 06:56:52,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:56:52,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 612.8) internal successors, (3064), 5 states have internal predecessors, (3064), 0 states have call successors, (0), 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 3345
[2023-11-29 06:56:52,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:56:52,421 INFO  L225             Difference]: With dead ends: 19342
[2023-11-29 06:56:52,421 INFO  L226             Difference]: Without dead ends: 10064
[2023-11-29 06:56:52,426 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6689 GetRequests, 6680 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:56:52,426 INFO  L413           NwaCegarLoop]: 14573 mSDtfsCounter, 14834 mSDsluCounter, 21810 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14834 SdHoareTripleChecker+Valid, 36383 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:56:52,427 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14834 Valid, 36383 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:56:52,435 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10064 states.
[2023-11-29 06:56:52,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 5380.
[2023-11-29 06:56:52,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5380 states, 5379 states have (on average 1.6683398401189813) internal successors, (8974), 5379 states have internal predecessors, (8974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:52,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 8974 transitions.
[2023-11-29 06:56:52,492 INFO  L78                 Accepts]: Start accepts. Automaton has 5380 states and 8974 transitions. Word has length 3345
[2023-11-29 06:56:52,493 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:56:52,494 INFO  L495      AbstractCegarLoop]: Abstraction has 5380 states and 8974 transitions.
[2023-11-29 06:56:52,494 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 612.8) internal successors, (3064), 5 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:56:52,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 5380 states and 8974 transitions.
[2023-11-29 06:56:52,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3347
[2023-11-29 06:56:52,538 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:56:52,539 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:56:52,581 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-11-29 06:56:52,739 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:52,740 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:56:52,740 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:56:52,740 INFO  L85        PathProgramCache]: Analyzing trace with hash 601297756, now seen corresponding path program 1 times
[2023-11-29 06:56:52,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:56:52,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838480159]
[2023-11-29 06:56:52,741 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:52,741 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:56:53,021 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:56:53,021 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277737247]
[2023-11-29 06:56:53,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:56:53,022 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:56:53,022 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:56:53,023 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:56:53,023 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-11-29 06:56:56,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:56:56,353 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15714 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:56:56,386 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:56:56,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 44 proven. 255 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2023-11-29 06:56:56,753 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:56:56,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked.
[2023-11-29 06:56:56,892 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:56:56,892 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838480159]
[2023-11-29 06:56:56,892 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:56:56,892 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277737247]
[2023-11-29 06:56:56,892 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277737247] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:56:56,893 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:56:56,894 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:56:56,894 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139695924]
[2023-11-29 06:56:56,894 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:56:56,896 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:56:56,896 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:56:56,898 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:56:56,898 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:56:56,898 INFO  L87              Difference]: Start difference. First operand 5380 states and 8974 transitions. Second operand  has 5 states, 5 states have (on average 613.4) internal successors, (3067), 5 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:00,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:00,304 INFO  L93              Difference]: Finished difference Result 19350 states and 32199 transitions.
[2023-11-29 06:57:00,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:00,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 613.4) internal successors, (3067), 5 states have internal predecessors, (3067), 0 states have call successors, (0), 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 3346
[2023-11-29 06:57:00,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:00,314 INFO  L225             Difference]: With dead ends: 19350
[2023-11-29 06:57:00,314 INFO  L226             Difference]: Without dead ends: 10065
[2023-11-29 06:57:00,318 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6691 GetRequests, 6682 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:00,318 INFO  L413           NwaCegarLoop]: 14565 mSDtfsCounter, 21876 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21876 SdHoareTripleChecker+Valid, 28967 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:00,318 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21876 Valid, 28967 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:57:00,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10065 states.
[2023-11-29 06:57:00,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5382.
[2023-11-29 06:57:00,377 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5382 states, 5381 states have (on average 1.6680914328191785) internal successors, (8976), 5381 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:00,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8976 transitions.
[2023-11-29 06:57:00,384 INFO  L78                 Accepts]: Start accepts. Automaton has 5382 states and 8976 transitions. Word has length 3346
[2023-11-29 06:57:00,385 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:00,386 INFO  L495      AbstractCegarLoop]: Abstraction has 5382 states and 8976 transitions.
[2023-11-29 06:57:00,386 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 613.4) internal successors, (3067), 5 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:00,386 INFO  L276                IsEmpty]: Start isEmpty. Operand 5382 states and 8976 transitions.
[2023-11-29 06:57:00,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3348
[2023-11-29 06:57:00,431 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:00,432 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:57:00,477 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-11-29 06:57:00,632 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2023-11-29 06:57:00,632 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:00,633 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:00,633 INFO  L85        PathProgramCache]: Analyzing trace with hash 1967588258, now seen corresponding path program 1 times
[2023-11-29 06:57:00,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:00,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657440359]
[2023-11-29 06:57:00,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:00,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:00,933 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:00,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708149322]
[2023-11-29 06:57:00,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:00,934 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:00,934 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:00,935 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:00,936 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-11-29 06:57:04,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:04,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15717 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:04,355 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:04,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 46 proven. 255 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2023-11-29 06:57:04,702 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:04,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-11-29 06:57:04,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:04,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657440359]
[2023-11-29 06:57:04,829 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:04,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708149322]
[2023-11-29 06:57:04,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [708149322] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:04,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:04,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:04,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951201289]
[2023-11-29 06:57:04,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:04,834 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:04,834 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:04,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:04,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:04,836 INFO  L87              Difference]: Start difference. First operand 5382 states and 8976 transitions. Second operand  has 5 states, 5 states have (on average 614.0) internal successors, (3070), 5 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:08,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:08,088 INFO  L93              Difference]: Finished difference Result 19358 states and 32207 transitions.
[2023-11-29 06:57:08,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:08,089 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 614.0) internal successors, (3070), 5 states have internal predecessors, (3070), 0 states have call successors, (0), 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 3347
[2023-11-29 06:57:08,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:08,099 INFO  L225             Difference]: With dead ends: 19358
[2023-11-29 06:57:08,099 INFO  L226             Difference]: Without dead ends: 10066
[2023-11-29 06:57:08,104 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6693 GetRequests, 6684 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:08,105 INFO  L413           NwaCegarLoop]: 14557 mSDtfsCounter, 21868 mSDsluCounter, 14397 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21868 SdHoareTripleChecker+Valid, 28954 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:08,105 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21868 Valid, 28954 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 06:57:08,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10066 states.
[2023-11-29 06:57:08,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 5384.
[2023-11-29 06:57:08,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5384 states, 5383 states have (on average 1.6678432101058889) internal successors, (8978), 5383 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:08,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 8978 transitions.
[2023-11-29 06:57:08,177 INFO  L78                 Accepts]: Start accepts. Automaton has 5384 states and 8978 transitions. Word has length 3347
[2023-11-29 06:57:08,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:08,179 INFO  L495      AbstractCegarLoop]: Abstraction has 5384 states and 8978 transitions.
[2023-11-29 06:57:08,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 614.0) internal successors, (3070), 5 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:08,180 INFO  L276                IsEmpty]: Start isEmpty. Operand 5384 states and 8978 transitions.
[2023-11-29 06:57:08,226 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3349
[2023-11-29 06:57:08,227 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:08,227 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:57:08,275 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-11-29 06:57:08,428 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-11-29 06:57:08,428 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:08,429 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:08,429 INFO  L85        PathProgramCache]: Analyzing trace with hash 1877820610, now seen corresponding path program 1 times
[2023-11-29 06:57:08,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:08,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686771555]
[2023-11-29 06:57:08,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:08,430 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:08,720 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:08,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905452930]
[2023-11-29 06:57:08,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:08,721 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:08,721 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:08,722 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:08,723 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-11-29 06:57:12,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:12,156 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15720 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:12,190 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:12,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 48 proven. 255 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-11-29 06:57:12,557 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:12,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-29 06:57:12,696 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:12,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686771555]
[2023-11-29 06:57:12,696 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:12,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905452930]
[2023-11-29 06:57:12,696 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [905452930] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:12,696 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:12,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:12,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094751297]
[2023-11-29 06:57:12,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:12,701 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:12,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:12,702 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:12,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:12,703 INFO  L87              Difference]: Start difference. First operand 5384 states and 8978 transitions. Second operand  has 5 states, 5 states have (on average 614.6) internal successors, (3073), 5 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:15,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:15,989 INFO  L93              Difference]: Finished difference Result 19366 states and 32215 transitions.
[2023-11-29 06:57:15,990 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:15,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 614.6) internal successors, (3073), 5 states have internal predecessors, (3073), 0 states have call successors, (0), 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 3348
[2023-11-29 06:57:15,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:16,001 INFO  L225             Difference]: With dead ends: 19366
[2023-11-29 06:57:16,001 INFO  L226             Difference]: Without dead ends: 10067
[2023-11-29 06:57:16,006 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6695 GetRequests, 6686 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:16,007 INFO  L413           NwaCegarLoop]: 14549 mSDtfsCounter, 21860 mSDsluCounter, 14392 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21860 SdHoareTripleChecker+Valid, 28941 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:16,007 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21860 Valid, 28941 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 06:57:16,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10067 states.
[2023-11-29 06:57:16,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 5386.
[2023-11-29 06:57:16,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5386 states, 5385 states have (on average 1.6675951717734447) internal successors, (8980), 5385 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:16,074 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 8980 transitions.
[2023-11-29 06:57:16,074 INFO  L78                 Accepts]: Start accepts. Automaton has 5386 states and 8980 transitions. Word has length 3348
[2023-11-29 06:57:16,075 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:16,076 INFO  L495      AbstractCegarLoop]: Abstraction has 5386 states and 8980 transitions.
[2023-11-29 06:57:16,076 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 614.6) internal successors, (3073), 5 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:16,076 INFO  L276                IsEmpty]: Start isEmpty. Operand 5386 states and 8980 transitions.
[2023-11-29 06:57:16,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3350
[2023-11-29 06:57:16,121 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:16,122 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:57:16,174 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2023-11-29 06:57:16,322 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-11-29 06:57:16,323 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:16,323 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:16,324 INFO  L85        PathProgramCache]: Analyzing trace with hash 1971929918, now seen corresponding path program 1 times
[2023-11-29 06:57:16,324 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:16,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905583690]
[2023-11-29 06:57:16,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:16,324 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:16,614 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:16,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390740910]
[2023-11-29 06:57:16,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:16,615 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:16,615 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:16,615 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:16,616 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-11-29 06:57:19,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:20,031 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15724 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:20,062 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:20,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 50 proven. 255 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-11-29 06:57:20,419 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:20,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-11-29 06:57:20,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:20,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905583690]
[2023-11-29 06:57:20,649 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:20,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390740910]
[2023-11-29 06:57:20,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [390740910] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:20,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:20,651 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:20,651 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248618358]
[2023-11-29 06:57:20,651 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:20,653 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:20,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:20,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:20,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:20,655 INFO  L87              Difference]: Start difference. First operand 5386 states and 8980 transitions. Second operand  has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:24,096 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:24,096 INFO  L93              Difference]: Finished difference Result 19374 states and 32223 transitions.
[2023-11-29 06:57:24,097 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:24,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 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 3349
[2023-11-29 06:57:24,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:24,107 INFO  L225             Difference]: With dead ends: 19374
[2023-11-29 06:57:24,107 INFO  L226             Difference]: Without dead ends: 10068
[2023-11-29 06:57:24,113 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6697 GetRequests, 6688 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:24,113 INFO  L413           NwaCegarLoop]: 14541 mSDtfsCounter, 21852 mSDsluCounter, 14387 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21852 SdHoareTripleChecker+Valid, 28928 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:24,113 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21852 Valid, 28928 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:57:24,122 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10068 states.
[2023-11-29 06:57:24,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10068 to 5388.
[2023-11-29 06:57:24,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5388 states, 5387 states have (on average 1.6673473176164841) internal successors, (8982), 5387 states have internal predecessors, (8982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:24,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 8982 transitions.
[2023-11-29 06:57:24,182 INFO  L78                 Accepts]: Start accepts. Automaton has 5388 states and 8982 transitions. Word has length 3349
[2023-11-29 06:57:24,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:24,184 INFO  L495      AbstractCegarLoop]: Abstraction has 5388 states and 8982 transitions.
[2023-11-29 06:57:24,185 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:24,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 5388 states and 8982 transitions.
[2023-11-29 06:57:24,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3351
[2023-11-29 06:57:24,229 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:24,230 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:57:24,273 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-11-29 06:57:24,430 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:24,431 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:24,431 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:24,431 INFO  L85        PathProgramCache]: Analyzing trace with hash 1630516778, now seen corresponding path program 1 times
[2023-11-29 06:57:24,432 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:24,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679205385]
[2023-11-29 06:57:24,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:24,432 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:24,720 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:24,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684595178]
[2023-11-29 06:57:24,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:24,721 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:24,721 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:24,722 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:24,723 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-11-29 06:57:28,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:28,105 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15727 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:28,149 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:28,491 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 52 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-11-29 06:57:28,491 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:28,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-11-29 06:57:28,617 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:28,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679205385]
[2023-11-29 06:57:28,617 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:28,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684595178]
[2023-11-29 06:57:28,617 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684595178] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:28,617 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:28,619 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:28,619 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223910466]
[2023-11-29 06:57:28,619 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:28,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:28,620 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:28,622 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:28,622 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:28,623 INFO  L87              Difference]: Start difference. First operand 5388 states and 8982 transitions. Second operand  has 5 states, 5 states have (on average 615.8) internal successors, (3079), 5 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:32,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:32,031 INFO  L93              Difference]: Finished difference Result 19382 states and 32231 transitions.
[2023-11-29 06:57:32,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:32,032 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 615.8) internal successors, (3079), 5 states have internal predecessors, (3079), 0 states have call successors, (0), 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 3350
[2023-11-29 06:57:32,035 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:32,042 INFO  L225             Difference]: With dead ends: 19382
[2023-11-29 06:57:32,043 INFO  L226             Difference]: Without dead ends: 10069
[2023-11-29 06:57:32,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6699 GetRequests, 6690 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:32,048 INFO  L413           NwaCegarLoop]: 14533 mSDtfsCounter, 21844 mSDsluCounter, 14382 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21844 SdHoareTripleChecker+Valid, 28915 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:32,048 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21844 Valid, 28915 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:57:32,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10069 states.
[2023-11-29 06:57:32,108 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 5390.
[2023-11-29 06:57:32,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5390 states, 5389 states have (on average 1.66709964742995) internal successors, (8984), 5389 states have internal predecessors, (8984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:32,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 8984 transitions.
[2023-11-29 06:57:32,118 INFO  L78                 Accepts]: Start accepts. Automaton has 5390 states and 8984 transitions. Word has length 3350
[2023-11-29 06:57:32,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:32,120 INFO  L495      AbstractCegarLoop]: Abstraction has 5390 states and 8984 transitions.
[2023-11-29 06:57:32,121 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 615.8) internal successors, (3079), 5 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:32,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 5390 states and 8984 transitions.
[2023-11-29 06:57:32,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3352
[2023-11-29 06:57:32,207 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:32,208 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:57:32,261 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-11-29 06:57:32,408 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:32,409 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:32,410 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:32,411 INFO  L85        PathProgramCache]: Analyzing trace with hash 143381208, now seen corresponding path program 1 times
[2023-11-29 06:57:32,411 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:32,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680571560]
[2023-11-29 06:57:32,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:32,412 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:32,693 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:32,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960534763]
[2023-11-29 06:57:32,693 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:32,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:32,694 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:32,694 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:32,695 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-11-29 06:57:35,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:36,073 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15730 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:36,105 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:36,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 54 proven. 255 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-11-29 06:57:36,441 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:36,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-11-29 06:57:36,571 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:36,571 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680571560]
[2023-11-29 06:57:36,571 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:36,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960534763]
[2023-11-29 06:57:36,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [960534763] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:36,572 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:36,574 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:36,574 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666168966]
[2023-11-29 06:57:36,574 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:36,576 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:36,576 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:36,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:36,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:36,579 INFO  L87              Difference]: Start difference. First operand 5390 states and 8984 transitions. Second operand  has 5 states, 5 states have (on average 616.4) internal successors, (3082), 5 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:40,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:40,532 INFO  L93              Difference]: Finished difference Result 19390 states and 32239 transitions.
[2023-11-29 06:57:40,532 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:40,533 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 616.4) internal successors, (3082), 5 states have internal predecessors, (3082), 0 states have call successors, (0), 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 3351
[2023-11-29 06:57:40,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:40,544 INFO  L225             Difference]: With dead ends: 19390
[2023-11-29 06:57:40,544 INFO  L226             Difference]: Without dead ends: 10070
[2023-11-29 06:57:40,548 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6701 GetRequests, 6692 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:40,549 INFO  L413           NwaCegarLoop]: 14525 mSDtfsCounter, 14798 mSDsluCounter, 21750 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14798 SdHoareTripleChecker+Valid, 36275 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:40,549 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14798 Valid, 36275 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:57:40,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10070 states.
[2023-11-29 06:57:40,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 5392.
[2023-11-29 06:57:40,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5392 states, 5391 states have (on average 1.6668521610090892) internal successors, (8986), 5391 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:40,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8986 transitions.
[2023-11-29 06:57:40,610 INFO  L78                 Accepts]: Start accepts. Automaton has 5392 states and 8986 transitions. Word has length 3351
[2023-11-29 06:57:40,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:40,611 INFO  L495      AbstractCegarLoop]: Abstraction has 5392 states and 8986 transitions.
[2023-11-29 06:57:40,612 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 616.4) internal successors, (3082), 5 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:40,612 INFO  L276                IsEmpty]: Start isEmpty. Operand 5392 states and 8986 transitions.
[2023-11-29 06:57:40,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3353
[2023-11-29 06:57:40,656 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:40,657 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-29 06:57:40,699 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-11-29 06:57:40,858 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-11-29 06:57:40,858 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:40,858 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:40,859 INFO  L85        PathProgramCache]: Analyzing trace with hash 684043152, now seen corresponding path program 1 times
[2023-11-29 06:57:40,860 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:40,860 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213152025]
[2023-11-29 06:57:40,860 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:40,860 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:41,133 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:41,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276180887]
[2023-11-29 06:57:41,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:41,134 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:41,134 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:41,135 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:41,136 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-11-29 06:57:44,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:44,502 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15733 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:44,542 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:44,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 56 proven. 255 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-11-29 06:57:44,889 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:45,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-11-29 06:57:45,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:45,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213152025]
[2023-11-29 06:57:45,040 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:45,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276180887]
[2023-11-29 06:57:45,040 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276180887] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:45,040 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:45,042 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:45,042 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627305330]
[2023-11-29 06:57:45,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:45,044 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:45,044 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:45,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:45,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:45,046 INFO  L87              Difference]: Start difference. First operand 5392 states and 8986 transitions. Second operand  has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:48,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:48,773 INFO  L93              Difference]: Finished difference Result 19398 states and 32247 transitions.
[2023-11-29 06:57:48,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:48,774 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 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 3352
[2023-11-29 06:57:48,776 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:48,784 INFO  L225             Difference]: With dead ends: 19398
[2023-11-29 06:57:48,784 INFO  L226             Difference]: Without dead ends: 10071
[2023-11-29 06:57:48,789 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6703 GetRequests, 6694 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:48,790 INFO  L413           NwaCegarLoop]: 14517 mSDtfsCounter, 14818 mSDsluCounter, 21122 mSDsCounter, 0 mSdLazyCounter, 4875 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14818 SdHoareTripleChecker+Valid, 35639 SdHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:48,790 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14818 Valid, 35639 Invalid, 5132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4875 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 06:57:48,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10071 states.
[2023-11-29 06:57:48,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 5394.
[2023-11-29 06:57:48,848 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5394 states, 5393 states have (on average 1.666604858149453) internal successors, (8988), 5393 states have internal predecessors, (8988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:48,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 8988 transitions.
[2023-11-29 06:57:48,853 INFO  L78                 Accepts]: Start accepts. Automaton has 5394 states and 8988 transitions. Word has length 3352
[2023-11-29 06:57:48,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:48,855 INFO  L495      AbstractCegarLoop]: Abstraction has 5394 states and 8988 transitions.
[2023-11-29 06:57:48,856 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:48,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 5394 states and 8988 transitions.
[2023-11-29 06:57:48,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3354
[2023-11-29 06:57:48,900 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:48,900 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:57:48,942 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-11-29 06:57:49,101 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:49,101 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:49,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:49,102 INFO  L85        PathProgramCache]: Analyzing trace with hash 2110290804, now seen corresponding path program 1 times
[2023-11-29 06:57:49,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:49,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841124321]
[2023-11-29 06:57:49,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:49,103 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:49,377 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:49,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655434689]
[2023-11-29 06:57:49,378 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:49,378 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:49,378 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:49,379 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:49,380 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-11-29 06:57:52,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:57:52,718 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15737 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:57:52,750 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:57:53,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 58 proven. 255 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-11-29 06:57:53,093 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:57:53,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-11-29 06:57:53,244 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:57:53,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841124321]
[2023-11-29 06:57:53,245 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:57:53,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655434689]
[2023-11-29 06:57:53,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [655434689] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:57:53,245 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:57:53,247 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:57:53,247 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059240533]
[2023-11-29 06:57:53,247 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:57:53,248 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:57:53,248 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:57:53,250 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:57:53,250 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:57:53,250 INFO  L87              Difference]: Start difference. First operand 5394 states and 8988 transitions. Second operand  has 5 states, 5 states have (on average 617.6) internal successors, (3088), 5 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:57,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:57:57,119 INFO  L93              Difference]: Finished difference Result 19406 states and 32255 transitions.
[2023-11-29 06:57:57,119 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:57:57,120 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 617.6) internal successors, (3088), 5 states have internal predecessors, (3088), 0 states have call successors, (0), 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 3353
[2023-11-29 06:57:57,122 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:57:57,129 INFO  L225             Difference]: With dead ends: 19406
[2023-11-29 06:57:57,129 INFO  L226             Difference]: Without dead ends: 10072
[2023-11-29 06:57:57,133 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6705 GetRequests, 6696 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:57:57,133 INFO  L413           NwaCegarLoop]: 14509 mSDtfsCounter, 14786 mSDsluCounter, 21730 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14786 SdHoareTripleChecker+Valid, 36239 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:57:57,133 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14786 Valid, 36239 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:57:57,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10072 states.
[2023-11-29 06:57:57,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 5396.
[2023-11-29 06:57:57,188 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5396 states, 5395 states have (on average 1.6663577386468953) internal successors, (8990), 5395 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:57,194 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 8990 transitions.
[2023-11-29 06:57:57,194 INFO  L78                 Accepts]: Start accepts. Automaton has 5396 states and 8990 transitions. Word has length 3353
[2023-11-29 06:57:57,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:57:57,195 INFO  L495      AbstractCegarLoop]: Abstraction has 5396 states and 8990 transitions.
[2023-11-29 06:57:57,196 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 617.6) internal successors, (3088), 5 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:57:57,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 5396 states and 8990 transitions.
[2023-11-29 06:57:57,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3355
[2023-11-29 06:57:57,240 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:57:57,241 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:57:57,283 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-11-29 06:57:57,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-11-29 06:57:57,442 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:57:57,442 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:57:57,443 INFO  L85        PathProgramCache]: Analyzing trace with hash 28749304, now seen corresponding path program 1 times
[2023-11-29 06:57:57,443 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:57:57,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210196874]
[2023-11-29 06:57:57,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:57,444 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:57:57,714 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:57:57,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050453155]
[2023-11-29 06:57:57,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:57:57,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:57:57,715 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:57:57,716 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:57:57,717 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-11-29 06:58:01,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:01,090 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15740 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:01,121 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:01,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 60 proven. 255 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-11-29 06:58:01,463 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:01,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-11-29 06:58:01,634 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:01,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210196874]
[2023-11-29 06:58:01,634 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:01,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050453155]
[2023-11-29 06:58:01,634 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050453155] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:01,634 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:01,637 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:01,637 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454756698]
[2023-11-29 06:58:01,637 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:01,638 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:01,638 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:01,641 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:01,641 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:01,642 INFO  L87              Difference]: Start difference. First operand 5396 states and 8990 transitions. Second operand  has 5 states, 5 states have (on average 618.2) internal successors, (3091), 5 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:05,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:05,507 INFO  L93              Difference]: Finished difference Result 19414 states and 32263 transitions.
[2023-11-29 06:58:05,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:05,508 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 618.2) internal successors, (3091), 5 states have internal predecessors, (3091), 0 states have call successors, (0), 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 3354
[2023-11-29 06:58:05,511 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:05,519 INFO  L225             Difference]: With dead ends: 19414
[2023-11-29 06:58:05,519 INFO  L226             Difference]: Without dead ends: 10073
[2023-11-29 06:58:05,524 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6707 GetRequests, 6698 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:05,524 INFO  L413           NwaCegarLoop]: 14501 mSDtfsCounter, 14780 mSDsluCounter, 21720 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14780 SdHoareTripleChecker+Valid, 36221 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:05,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14780 Valid, 36221 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:58:05,534 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10073 states.
[2023-11-29 06:58:05,579 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 5398.
[2023-11-29 06:58:05,583 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5398 states, 5397 states have (on average 1.6661108022975728) internal successors, (8992), 5397 states have internal predecessors, (8992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:05,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8992 transitions.
[2023-11-29 06:58:05,588 INFO  L78                 Accepts]: Start accepts. Automaton has 5398 states and 8992 transitions. Word has length 3354
[2023-11-29 06:58:05,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:05,590 INFO  L495      AbstractCegarLoop]: Abstraction has 5398 states and 8992 transitions.
[2023-11-29 06:58:05,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 618.2) internal successors, (3091), 5 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:05,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 5398 states and 8992 transitions.
[2023-11-29 06:58:05,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3356
[2023-11-29 06:58:05,634 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:05,635 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:58:05,677 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-11-29 06:58:05,835 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:05,836 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:05,836 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:05,837 INFO  L85        PathProgramCache]: Analyzing trace with hash 1012311822, now seen corresponding path program 1 times
[2023-11-29 06:58:05,837 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:05,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711384108]
[2023-11-29 06:58:05,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:05,838 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:06,131 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:06,131 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467718283]
[2023-11-29 06:58:06,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:06,132 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:06,132 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:06,132 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:06,133 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-11-29 06:58:09,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:09,482 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15743 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:09,519 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:09,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 62 proven. 255 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-29 06:58:09,860 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:10,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-11-29 06:58:10,002 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:10,002 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711384108]
[2023-11-29 06:58:10,002 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:10,002 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467718283]
[2023-11-29 06:58:10,003 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [467718283] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:10,003 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:10,004 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:10,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675259048]
[2023-11-29 06:58:10,004 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:10,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:10,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:10,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:10,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:10,008 INFO  L87              Difference]: Start difference. First operand 5398 states and 8992 transitions. Second operand  has 5 states, 5 states have (on average 618.8) internal successors, (3094), 5 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:13,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:13,389 INFO  L93              Difference]: Finished difference Result 19422 states and 32271 transitions.
[2023-11-29 06:58:13,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:13,390 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 618.8) internal successors, (3094), 5 states have internal predecessors, (3094), 0 states have call successors, (0), 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 3355
[2023-11-29 06:58:13,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:13,400 INFO  L225             Difference]: With dead ends: 19422
[2023-11-29 06:58:13,401 INFO  L226             Difference]: Without dead ends: 10074
[2023-11-29 06:58:13,405 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6709 GetRequests, 6700 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:13,406 INFO  L413           NwaCegarLoop]: 14493 mSDtfsCounter, 21775 mSDsluCounter, 14358 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21775 SdHoareTripleChecker+Valid, 28851 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:13,406 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21775 Valid, 28851 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:58:13,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10074 states.
[2023-11-29 06:58:13,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 5400.
[2023-11-29 06:58:13,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5400 states, 5399 states have (on average 1.6658640488979441) internal successors, (8994), 5399 states have internal predecessors, (8994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:13,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 8994 transitions.
[2023-11-29 06:58:13,467 INFO  L78                 Accepts]: Start accepts. Automaton has 5400 states and 8994 transitions. Word has length 3355
[2023-11-29 06:58:13,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:13,469 INFO  L495      AbstractCegarLoop]: Abstraction has 5400 states and 8994 transitions.
[2023-11-29 06:58:13,469 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 618.8) internal successors, (3094), 5 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:13,469 INFO  L276                IsEmpty]: Start isEmpty. Operand 5400 states and 8994 transitions.
[2023-11-29 06:58:13,513 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3357
[2023-11-29 06:58:13,513 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:13,514 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:58:13,556 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-11-29 06:58:13,715 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:13,715 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:13,715 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:13,716 INFO  L85        PathProgramCache]: Analyzing trace with hash -282597538, now seen corresponding path program 1 times
[2023-11-29 06:58:13,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:13,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146926003]
[2023-11-29 06:58:13,717 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:13,717 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:13,989 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:13,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662591601]
[2023-11-29 06:58:13,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:13,990 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:13,990 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:13,990 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:13,991 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-11-29 06:58:17,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:17,380 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15746 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:58:17,412 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:17,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 64 proven. 255 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-29 06:58:17,889 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:18,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2023-11-29 06:58:18,073 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:18,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146926003]
[2023-11-29 06:58:18,073 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:18,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662591601]
[2023-11-29 06:58:18,073 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662591601] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:18,073 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:18,076 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 06:58:18,076 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286070741]
[2023-11-29 06:58:18,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:18,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 06:58:18,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:18,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 06:58:18,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 06:58:18,080 INFO  L87              Difference]: Start difference. First operand 5400 states and 8994 transitions. Second operand  has 6 states, 6 states have (on average 516.1666666666666) internal successors, (3097), 6 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:25,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:25,128 INFO  L93              Difference]: Finished difference Result 24277 states and 40352 transitions.
[2023-11-29 06:58:25,129 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 06:58:25,129 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 516.1666666666666) internal successors, (3097), 6 states have internal predecessors, (3097), 0 states have call successors, (0), 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 3356
[2023-11-29 06:58:25,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:25,144 INFO  L225             Difference]: With dead ends: 24277
[2023-11-29 06:58:25,144 INFO  L226             Difference]: Without dead ends: 14922
[2023-11-29 06:58:25,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6712 GetRequests, 6700 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:58:25,151 INFO  L413           NwaCegarLoop]: 14487 mSDtfsCounter, 22628 mSDsluCounter, 49527 mSDsCounter, 0 mSdLazyCounter, 10577 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22628 SdHoareTripleChecker+Valid, 64014 SdHoareTripleChecker+Invalid, 10836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 10577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:25,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22628 Valid, 64014 Invalid, 10836 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [259 Valid, 10577 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-11-29 06:58:25,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14922 states.
[2023-11-29 06:58:25,219 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14922 to 5402.
[2023-11-29 06:58:25,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5402 states, 5401 states have (on average 1.6656174782447695) internal successors, (8996), 5401 states have internal predecessors, (8996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:25,229 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8996 transitions.
[2023-11-29 06:58:25,229 INFO  L78                 Accepts]: Start accepts. Automaton has 5402 states and 8996 transitions. Word has length 3356
[2023-11-29 06:58:25,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:25,230 INFO  L495      AbstractCegarLoop]: Abstraction has 5402 states and 8996 transitions.
[2023-11-29 06:58:25,231 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 516.1666666666666) internal successors, (3097), 6 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:25,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 5402 states and 8996 transitions.
[2023-11-29 06:58:25,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3358
[2023-11-29 06:58:25,276 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:25,276 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 06:58:25,317 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-11-29 06:58:25,477 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:25,477 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:25,477 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:25,478 INFO  L85        PathProgramCache]: Analyzing trace with hash -1719224150, now seen corresponding path program 1 times
[2023-11-29 06:58:25,478 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:25,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588448768]
[2023-11-29 06:58:25,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:25,479 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:25,751 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:25,751 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69044347]
[2023-11-29 06:58:25,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:25,752 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:25,752 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:25,753 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:25,753 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-11-29 06:58:29,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:29,199 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15750 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:29,234 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:29,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 66 proven. 255 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-29 06:58:29,580 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:29,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-11-29 06:58:29,750 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:29,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588448768]
[2023-11-29 06:58:29,750 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:29,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69044347]
[2023-11-29 06:58:29,750 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [69044347] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:29,751 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:29,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:29,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936270314]
[2023-11-29 06:58:29,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:29,755 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:29,755 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:29,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:29,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:29,757 INFO  L87              Difference]: Start difference. First operand 5402 states and 8996 transitions. Second operand  has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:33,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:33,182 INFO  L93              Difference]: Finished difference Result 19438 states and 32287 transitions.
[2023-11-29 06:58:33,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:33,183 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 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 3357
[2023-11-29 06:58:33,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:33,192 INFO  L225             Difference]: With dead ends: 19438
[2023-11-29 06:58:33,192 INFO  L226             Difference]: Without dead ends: 10076
[2023-11-29 06:58:33,197 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6713 GetRequests, 6704 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:33,197 INFO  L413           NwaCegarLoop]: 14477 mSDtfsCounter, 21788 mSDsluCounter, 14347 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21788 SdHoareTripleChecker+Valid, 28824 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:33,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21788 Valid, 28824 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 06:58:33,204 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10076 states.
[2023-11-29 06:58:33,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 5404.
[2023-11-29 06:58:33,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5404 states, 5403 states have (on average 1.6653710901351102) internal successors, (8998), 5403 states have internal predecessors, (8998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:33,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 8998 transitions.
[2023-11-29 06:58:33,258 INFO  L78                 Accepts]: Start accepts. Automaton has 5404 states and 8998 transitions. Word has length 3357
[2023-11-29 06:58:33,259 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:33,259 INFO  L495      AbstractCegarLoop]: Abstraction has 5404 states and 8998 transitions.
[2023-11-29 06:58:33,260 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:33,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 5404 states and 8998 transitions.
[2023-11-29 06:58:33,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3359
[2023-11-29 06:58:33,304 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:33,305 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:58:33,345 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2023-11-29 06:58:33,505 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:33,505 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:33,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:33,506 INFO  L85        PathProgramCache]: Analyzing trace with hash -17335610, now seen corresponding path program 1 times
[2023-11-29 06:58:33,506 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:33,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588606224]
[2023-11-29 06:58:33,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:33,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:33,780 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:33,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212184]
[2023-11-29 06:58:33,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:33,781 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:33,781 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:33,782 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:33,783 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-11-29 06:58:37,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:37,182 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15753 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:37,213 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:37,553 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 68 proven. 255 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-29 06:58:37,553 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:37,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2023-11-29 06:58:37,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:37,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588606224]
[2023-11-29 06:58:37,706 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:37,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212184]
[2023-11-29 06:58:37,706 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [212184] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:37,706 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:37,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:37,708 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333241088]
[2023-11-29 06:58:37,708 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:37,709 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:37,709 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:37,711 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:37,711 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:37,711 INFO  L87              Difference]: Start difference. First operand 5404 states and 8998 transitions. Second operand  has 5 states, 5 states have (on average 620.6) internal successors, (3103), 5 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:41,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:41,469 INFO  L93              Difference]: Finished difference Result 19446 states and 32295 transitions.
[2023-11-29 06:58:41,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:41,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 620.6) internal successors, (3103), 5 states have internal predecessors, (3103), 0 states have call successors, (0), 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 3358
[2023-11-29 06:58:41,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:41,479 INFO  L225             Difference]: With dead ends: 19446
[2023-11-29 06:58:41,479 INFO  L226             Difference]: Without dead ends: 10077
[2023-11-29 06:58:41,484 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6715 GetRequests, 6706 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:41,484 INFO  L413           NwaCegarLoop]: 14469 mSDtfsCounter, 14756 mSDsluCounter, 21680 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14756 SdHoareTripleChecker+Valid, 36149 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:41,485 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14756 Valid, 36149 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 06:58:41,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10077 states.
[2023-11-29 06:58:41,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 5406.
[2023-11-29 06:58:41,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5406 states, 5405 states have (on average 1.6651248843663276) internal successors, (9000), 5405 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:41,546 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 9000 transitions.
[2023-11-29 06:58:41,546 INFO  L78                 Accepts]: Start accepts. Automaton has 5406 states and 9000 transitions. Word has length 3358
[2023-11-29 06:58:41,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:41,547 INFO  L495      AbstractCegarLoop]: Abstraction has 5406 states and 9000 transitions.
[2023-11-29 06:58:41,548 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 620.6) internal successors, (3103), 5 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:41,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 5406 states and 9000 transitions.
[2023-11-29 06:58:41,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3360
[2023-11-29 06:58:41,592 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:41,593 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:58:41,634 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-11-29 06:58:41,793 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44
[2023-11-29 06:58:41,794 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:41,794 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:41,794 INFO  L85        PathProgramCache]: Analyzing trace with hash -440074172, now seen corresponding path program 1 times
[2023-11-29 06:58:41,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:41,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330192959]
[2023-11-29 06:58:41,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:41,795 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:42,084 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:42,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7073165]
[2023-11-29 06:58:42,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:42,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:42,085 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:42,086 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:42,087 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-11-29 06:58:45,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:45,512 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15756 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:45,543 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:45,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 69 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:58:45,891 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:46,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked.
[2023-11-29 06:58:46,057 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:46,057 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330192959]
[2023-11-29 06:58:46,057 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:46,057 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7073165]
[2023-11-29 06:58:46,057 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [7073165] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:46,057 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:46,059 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:46,060 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123310377]
[2023-11-29 06:58:46,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:46,061 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:46,061 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:46,063 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:46,063 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:46,063 INFO  L87              Difference]: Start difference. First operand 5406 states and 9000 transitions. Second operand  has 5 states, 5 states have (on average 621.2) internal successors, (3106), 5 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:49,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:49,544 INFO  L93              Difference]: Finished difference Result 19454 states and 32303 transitions.
[2023-11-29 06:58:49,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:49,545 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 621.2) internal successors, (3106), 5 states have internal predecessors, (3106), 0 states have call successors, (0), 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 3359
[2023-11-29 06:58:49,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:49,555 INFO  L225             Difference]: With dead ends: 19454
[2023-11-29 06:58:49,555 INFO  L226             Difference]: Without dead ends: 10078
[2023-11-29 06:58:49,560 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6717 GetRequests, 6708 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:49,561 INFO  L413           NwaCegarLoop]: 14461 mSDtfsCounter, 21739 mSDsluCounter, 14338 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21739 SdHoareTripleChecker+Valid, 28799 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:49,561 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21739 Valid, 28799 Invalid, 4100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:58:49,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10078 states.
[2023-11-29 06:58:49,614 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 5408.
[2023-11-29 06:58:49,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5408 states, 5407 states have (on average 1.664878860736083) internal successors, (9002), 5407 states have internal predecessors, (9002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:49,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 9002 transitions.
[2023-11-29 06:58:49,624 INFO  L78                 Accepts]: Start accepts. Automaton has 5408 states and 9002 transitions. Word has length 3359
[2023-11-29 06:58:49,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:49,625 INFO  L495      AbstractCegarLoop]: Abstraction has 5408 states and 9002 transitions.
[2023-11-29 06:58:49,626 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 621.2) internal successors, (3106), 5 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:49,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 5408 states and 9002 transitions.
[2023-11-29 06:58:49,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3361
[2023-11-29 06:58:49,670 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:49,671 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:58:49,711 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0
[2023-11-29 06:58:49,871 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45
[2023-11-29 06:58:49,871 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:49,872 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:49,872 INFO  L85        PathProgramCache]: Analyzing trace with hash -1029736404, now seen corresponding path program 1 times
[2023-11-29 06:58:49,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:49,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141293393]
[2023-11-29 06:58:49,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:49,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:50,145 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:50,146 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720348994]
[2023-11-29 06:58:50,146 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:50,146 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:50,146 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:50,147 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:50,148 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-11-29 06:58:53,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:58:53,697 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15759 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:58:53,727 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:58:54,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 70 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:58:54,052 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:58:54,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-11-29 06:58:54,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:58:54,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141293393]
[2023-11-29 06:58:54,216 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:58:54,217 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720348994]
[2023-11-29 06:58:54,217 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720348994] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:58:54,217 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:58:54,218 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:58:54,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110124675]
[2023-11-29 06:58:54,219 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:58:54,220 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:58:54,220 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:58:54,221 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:58:54,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:58:54,222 INFO  L87              Difference]: Start difference. First operand 5408 states and 9002 transitions. Second operand  has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:58,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:58:58,172 INFO  L93              Difference]: Finished difference Result 19465 states and 32316 transitions.
[2023-11-29 06:58:58,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:58:58,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 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 3360
[2023-11-29 06:58:58,176 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:58:58,184 INFO  L225             Difference]: With dead ends: 19465
[2023-11-29 06:58:58,184 INFO  L226             Difference]: Without dead ends: 10082
[2023-11-29 06:58:58,188 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6719 GetRequests, 6710 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:58:58,189 INFO  L413           NwaCegarLoop]: 14448 mSDtfsCounter, 14742 mSDsluCounter, 21658 mSDsCounter, 0 mSdLazyCounter, 5263 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14742 SdHoareTripleChecker+Valid, 36106 SdHoareTripleChecker+Invalid, 5520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:58:58,189 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14742 Valid, 36106 Invalid, 5520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5263 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:58:58,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10082 states.
[2023-11-29 06:58:58,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10082 to 5413.
[2023-11-29 06:58:58,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5413 states, 5412 states have (on average 1.6646341463414633) internal successors, (9009), 5412 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:58,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 9009 transitions.
[2023-11-29 06:58:58,249 INFO  L78                 Accepts]: Start accepts. Automaton has 5413 states and 9009 transitions. Word has length 3360
[2023-11-29 06:58:58,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:58:58,251 INFO  L495      AbstractCegarLoop]: Abstraction has 5413 states and 9009 transitions.
[2023-11-29 06:58:58,251 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:58:58,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 5413 states and 9009 transitions.
[2023-11-29 06:58:58,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3362
[2023-11-29 06:58:58,295 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:58:58,296 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:58:58,335 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-11-29 06:58:58,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-11-29 06:58:58,496 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:58:58,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:58:58,497 INFO  L85        PathProgramCache]: Analyzing trace with hash -1679929352, now seen corresponding path program 1 times
[2023-11-29 06:58:58,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:58:58,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488684366]
[2023-11-29 06:58:58,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:58,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:58:58,764 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:58:58,764 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97125954]
[2023-11-29 06:58:58,765 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:58:58,765 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:58:58,765 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:58:58,766 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:58:58,766 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-11-29 06:59:01,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:02,056 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15762 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:02,087 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:02,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 74 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:02,481 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:02,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2023-11-29 06:59:02,669 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:02,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488684366]
[2023-11-29 06:59:02,670 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:02,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97125954]
[2023-11-29 06:59:02,670 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [97125954] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:02,670 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:02,672 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:02,673 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285666393]
[2023-11-29 06:59:02,673 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:02,674 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:02,674 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:02,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:02,676 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:02,676 INFO  L87              Difference]: Start difference. First operand 5413 states and 9009 transitions. Second operand  has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:06,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:06,476 INFO  L93              Difference]: Finished difference Result 19583 states and 32507 transitions.
[2023-11-29 06:59:06,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:06,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 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 3361
[2023-11-29 06:59:06,479 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:06,486 INFO  L225             Difference]: With dead ends: 19583
[2023-11-29 06:59:06,486 INFO  L226             Difference]: Without dead ends: 10086
[2023-11-29 06:59:06,489 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6721 GetRequests, 6712 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:06,489 INFO  L413           NwaCegarLoop]: 14435 mSDtfsCounter, 14769 mSDsluCounter, 21048 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14769 SdHoareTripleChecker+Valid, 35483 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:06,490 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14769 Valid, 35483 Invalid, 5124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 06:59:06,497 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10086 states.
[2023-11-29 06:59:06,539 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 5418.
[2023-11-29 06:59:06,543 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5418 states, 5417 states have (on average 1.6643898836994646) internal successors, (9016), 5417 states have internal predecessors, (9016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:06,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 9016 transitions.
[2023-11-29 06:59:06,549 INFO  L78                 Accepts]: Start accepts. Automaton has 5418 states and 9016 transitions. Word has length 3361
[2023-11-29 06:59:06,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:06,550 INFO  L495      AbstractCegarLoop]: Abstraction has 5418 states and 9016 transitions.
[2023-11-29 06:59:06,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:06,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 5418 states and 9016 transitions.
[2023-11-29 06:59:06,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3363
[2023-11-29 06:59:06,594 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:06,595 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:59:06,635 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-11-29 06:59:06,796 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-11-29 06:59:06,796 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:06,796 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:06,796 INFO  L85        PathProgramCache]: Analyzing trace with hash 511422328, now seen corresponding path program 1 times
[2023-11-29 06:59:06,796 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:06,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481336574]
[2023-11-29 06:59:06,797 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:06,797 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:07,063 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:07,064 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909195547]
[2023-11-29 06:59:07,064 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:07,064 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:07,064 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:07,065 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:07,066 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-11-29 06:59:10,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:10,294 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15765 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 06:59:10,325 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:10,704 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 78 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:10,704 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:10,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2023-11-29 06:59:10,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:10,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481336574]
[2023-11-29 06:59:10,921 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:10,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909195547]
[2023-11-29 06:59:10,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909195547] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:10,921 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:10,923 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 06:59:10,923 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250984280]
[2023-11-29 06:59:10,923 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:10,926 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 06:59:10,926 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:10,927 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 06:59:10,927 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 06:59:10,928 INFO  L87              Difference]: Start difference. First operand 5418 states and 9016 transitions. Second operand  has 6 states, 6 states have (on average 519.8333333333334) internal successors, (3119), 6 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:18,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:18,159 INFO  L93              Difference]: Finished difference Result 24490 states and 40666 transitions.
[2023-11-29 06:59:18,160 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 06:59:18,160 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 519.8333333333334) internal successors, (3119), 6 states have internal predecessors, (3119), 0 states have call successors, (0), 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 3362
[2023-11-29 06:59:18,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:18,174 INFO  L225             Difference]: With dead ends: 24490
[2023-11-29 06:59:18,175 INFO  L226             Difference]: Without dead ends: 14973
[2023-11-29 06:59:18,181 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6724 GetRequests, 6712 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-11-29 06:59:18,181 INFO  L413           NwaCegarLoop]: 14429 mSDtfsCounter, 22588 mSDsluCounter, 49431 mSDsCounter, 0 mSdLazyCounter, 10553 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22588 SdHoareTripleChecker+Valid, 63860 SdHoareTripleChecker+Invalid, 10812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 10553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:18,181 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22588 Valid, 63860 Invalid, 10812 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [259 Valid, 10553 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-11-29 06:59:18,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14973 states.
[2023-11-29 06:59:18,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14973 to 5420.
[2023-11-29 06:59:18,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5420 states, 5419 states have (on average 1.6641446761395091) internal successors, (9018), 5419 states have internal predecessors, (9018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:18,328 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 9018 transitions.
[2023-11-29 06:59:18,328 INFO  L78                 Accepts]: Start accepts. Automaton has 5420 states and 9018 transitions. Word has length 3362
[2023-11-29 06:59:18,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:18,330 INFO  L495      AbstractCegarLoop]: Abstraction has 5420 states and 9018 transitions.
[2023-11-29 06:59:18,330 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 519.8333333333334) internal successors, (3119), 6 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:18,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 5420 states and 9018 transitions.
[2023-11-29 06:59:18,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3364
[2023-11-29 06:59:18,374 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:18,375 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:59:18,415 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0
[2023-11-29 06:59:18,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2023-11-29 06:59:18,575 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:18,577 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:18,577 INFO  L85        PathProgramCache]: Analyzing trace with hash 234646164, now seen corresponding path program 1 times
[2023-11-29 06:59:18,578 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:18,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068169756]
[2023-11-29 06:59:18,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:18,579 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:18,856 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:18,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298487979]
[2023-11-29 06:59:18,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:18,857 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:18,857 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:18,858 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:18,858 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-11-29 06:59:22,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:22,301 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15769 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:22,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:22,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:22,699 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:22,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2023-11-29 06:59:22,891 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:22,891 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068169756]
[2023-11-29 06:59:22,891 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:22,891 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298487979]
[2023-11-29 06:59:22,891 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [298487979] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:22,891 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:22,893 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:22,893 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645594818]
[2023-11-29 06:59:22,893 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:22,894 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:22,894 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:22,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:22,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:22,896 INFO  L87              Difference]: Start difference. First operand 5420 states and 9018 transitions. Second operand  has 5 states, 5 states have (on average 624.8) internal successors, (3124), 5 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:26,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:26,670 INFO  L93              Difference]: Finished difference Result 19615 states and 32549 transitions.
[2023-11-29 06:59:26,670 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:26,671 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 624.8) internal successors, (3124), 5 states have internal predecessors, (3124), 0 states have call successors, (0), 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 3363
[2023-11-29 06:59:26,674 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:26,681 INFO  L225             Difference]: With dead ends: 19615
[2023-11-29 06:59:26,681 INFO  L226             Difference]: Without dead ends: 10091
[2023-11-29 06:59:26,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6725 GetRequests, 6716 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:26,686 INFO  L413           NwaCegarLoop]: 14414 mSDtfsCounter, 14757 mSDsluCounter, 21031 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14757 SdHoareTripleChecker+Valid, 35445 SdHoareTripleChecker+Invalid, 5120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:26,686 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14757 Valid, 35445 Invalid, 5120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-11-29 06:59:26,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10091 states.
[2023-11-29 06:59:26,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10091 to 5425.
[2023-11-29 06:59:26,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5425 states, 5424 states have (on average 1.6639011799410028) internal successors, (9025), 5424 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:26,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 9025 transitions.
[2023-11-29 06:59:26,748 INFO  L78                 Accepts]: Start accepts. Automaton has 5425 states and 9025 transitions. Word has length 3363
[2023-11-29 06:59:26,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:26,750 INFO  L495      AbstractCegarLoop]: Abstraction has 5425 states and 9025 transitions.
[2023-11-29 06:59:26,750 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 624.8) internal successors, (3124), 5 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:26,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 5425 states and 9025 transitions.
[2023-11-29 06:59:26,794 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3365
[2023-11-29 06:59:26,795 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:26,795 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-11-29 06:59:26,835 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-11-29 06:59:26,996 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2023-11-29 06:59:26,996 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:26,996 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:26,997 INFO  L85        PathProgramCache]: Analyzing trace with hash 1739591430, now seen corresponding path program 1 times
[2023-11-29 06:59:26,997 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:26,997 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256278570]
[2023-11-29 06:59:26,997 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:26,997 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:27,269 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:27,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628236813]
[2023-11-29 06:59:27,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:27,270 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:27,270 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:27,271 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:27,271 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-11-29 06:59:30,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:30,723 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15772 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:30,754 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:31,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 84 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:31,104 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:31,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2023-11-29 06:59:31,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:31,309 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256278570]
[2023-11-29 06:59:31,309 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:31,309 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628236813]
[2023-11-29 06:59:31,309 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [628236813] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:31,309 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:31,311 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:31,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684794369]
[2023-11-29 06:59:31,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:31,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:31,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:31,314 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:31,314 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:31,315 INFO  L87              Difference]: Start difference. First operand 5425 states and 9025 transitions. Second operand  has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:34,967 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:34,967 INFO  L93              Difference]: Finished difference Result 19642 states and 32588 transitions.
[2023-11-29 06:59:34,967 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:34,968 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 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 3364
[2023-11-29 06:59:34,971 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:34,978 INFO  L225             Difference]: With dead ends: 19642
[2023-11-29 06:59:34,978 INFO  L226             Difference]: Without dead ends: 10095
[2023-11-29 06:59:34,983 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6727 GetRequests, 6718 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:34,983 INFO  L413           NwaCegarLoop]: 14401 mSDtfsCounter, 14750 mSDsluCounter, 21022 mSDsCounter, 0 mSdLazyCounter, 4859 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14750 SdHoareTripleChecker+Valid, 35423 SdHoareTripleChecker+Invalid, 5116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:34,984 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14750 Valid, 35423 Invalid, 5116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4859 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 06:59:34,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10095 states.
[2023-11-29 06:59:35,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 5430.
[2023-11-29 06:59:35,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5430 states, 5429 states have (on average 1.6636581322527169) internal successors, (9032), 5429 states have internal predecessors, (9032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:35,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 9032 transitions.
[2023-11-29 06:59:35,048 INFO  L78                 Accepts]: Start accepts. Automaton has 5430 states and 9032 transitions. Word has length 3364
[2023-11-29 06:59:35,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:35,049 INFO  L495      AbstractCegarLoop]: Abstraction has 5430 states and 9032 transitions.
[2023-11-29 06:59:35,050 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:35,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 5430 states and 9032 transitions.
[2023-11-29 06:59:35,095 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3366
[2023-11-29 06:59:35,096 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:35,096 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-29 06:59:35,136 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-11-29 06:59:35,297 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:35,297 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:35,297 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:35,298 INFO  L85        PathProgramCache]: Analyzing trace with hash -145398134, now seen corresponding path program 1 times
[2023-11-29 06:59:35,298 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:35,298 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479765425]
[2023-11-29 06:59:35,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:35,299 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:35,569 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:35,570 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864322525]
[2023-11-29 06:59:35,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:35,570 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:35,570 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:35,571 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:35,572 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-11-29 06:59:38,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:38,887 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15776 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:38,919 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:39,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 88 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:39,278 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:39,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked.
[2023-11-29 06:59:39,477 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:39,477 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479765425]
[2023-11-29 06:59:39,477 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:39,477 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864322525]
[2023-11-29 06:59:39,478 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [864322525] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:39,478 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:39,479 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:39,479 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669667114]
[2023-11-29 06:59:39,480 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:39,481 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:39,481 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:39,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:39,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:39,483 INFO  L87              Difference]: Start difference. First operand 5430 states and 9032 transitions. Second operand  has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:43,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:43,026 INFO  L93              Difference]: Finished difference Result 19663 states and 32617 transitions.
[2023-11-29 06:59:43,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:43,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 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 3365
[2023-11-29 06:59:43,029 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:43,037 INFO  L225             Difference]: With dead ends: 19663
[2023-11-29 06:59:43,037 INFO  L226             Difference]: Without dead ends: 10096
[2023-11-29 06:59:43,042 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6729 GetRequests, 6720 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:43,043 INFO  L413           NwaCegarLoop]: 14393 mSDtfsCounter, 21708 mSDsluCounter, 14303 mSDsCounter, 0 mSdLazyCounter, 3827 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21708 SdHoareTripleChecker+Valid, 28696 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:43,043 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21708 Valid, 28696 Invalid, 4084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3827 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:59:43,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10096 states.
[2023-11-29 06:59:43,100 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 5432.
[2023-11-29 06:59:43,104 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5432 states, 5431 states have (on average 1.6634137359602283) internal successors, (9034), 5431 states have internal predecessors, (9034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:43,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 9034 transitions.
[2023-11-29 06:59:43,110 INFO  L78                 Accepts]: Start accepts. Automaton has 5432 states and 9034 transitions. Word has length 3365
[2023-11-29 06:59:43,112 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:43,112 INFO  L495      AbstractCegarLoop]: Abstraction has 5432 states and 9034 transitions.
[2023-11-29 06:59:43,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:43,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 5432 states and 9034 transitions.
[2023-11-29 06:59:43,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3367
[2023-11-29 06:59:43,157 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:43,158 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 06:59:43,199 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-11-29 06:59:43,358 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:43,358 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:43,359 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:43,360 INFO  L85        PathProgramCache]: Analyzing trace with hash -1813067410, now seen corresponding path program 1 times
[2023-11-29 06:59:43,360 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:43,360 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031330659]
[2023-11-29 06:59:43,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:43,361 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:43,646 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:43,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759369270]
[2023-11-29 06:59:43,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:43,647 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:43,647 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:43,647 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:43,648 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-11-29 06:59:47,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:47,091 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15779 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:47,122 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:47,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 90 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:47,461 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:47,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2023-11-29 06:59:47,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:47,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031330659]
[2023-11-29 06:59:47,658 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:47,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759369270]
[2023-11-29 06:59:47,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759369270] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:47,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:47,661 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:47,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728335105]
[2023-11-29 06:59:47,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:47,662 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:47,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:47,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:47,664 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:47,664 INFO  L87              Difference]: Start difference. First operand 5432 states and 9034 transitions. Second operand  has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:51,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:51,590 INFO  L93              Difference]: Finished difference Result 19674 states and 32630 transitions.
[2023-11-29 06:59:51,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:51,591 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 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 3366
[2023-11-29 06:59:51,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:51,603 INFO  L225             Difference]: With dead ends: 19674
[2023-11-29 06:59:51,603 INFO  L226             Difference]: Without dead ends: 10100
[2023-11-29 06:59:51,609 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6731 GetRequests, 6722 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:51,609 INFO  L413           NwaCegarLoop]: 14380 mSDtfsCounter, 14698 mSDsluCounter, 21590 mSDsCounter, 0 mSdLazyCounter, 5231 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14698 SdHoareTripleChecker+Valid, 35970 SdHoareTripleChecker+Invalid, 5488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:51,609 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14698 Valid, 35970 Invalid, 5488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5231 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 06:59:51,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10100 states.
[2023-11-29 06:59:51,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 5437.
[2023-11-29 06:59:51,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5437 states, 5436 states have (on average 1.6631714495952907) internal successors, (9041), 5436 states have internal predecessors, (9041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:51,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 9041 transitions.
[2023-11-29 06:59:51,674 INFO  L78                 Accepts]: Start accepts. Automaton has 5437 states and 9041 transitions. Word has length 3366
[2023-11-29 06:59:51,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:51,676 INFO  L495      AbstractCegarLoop]: Abstraction has 5437 states and 9041 transitions.
[2023-11-29 06:59:51,676 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:51,676 INFO  L276                IsEmpty]: Start isEmpty. Operand 5437 states and 9041 transitions.
[2023-11-29 06:59:51,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3368
[2023-11-29 06:59:51,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:59:51,721 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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]
[2023-11-29 06:59:51,766 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2023-11-29 06:59:51,922 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-11-29 06:59:51,922 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:59:51,922 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:59:51,923 INFO  L85        PathProgramCache]: Analyzing trace with hash -1591124802, now seen corresponding path program 1 times
[2023-11-29 06:59:51,923 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:59:51,923 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733050858]
[2023-11-29 06:59:51,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:51,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:59:52,232 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 06:59:52,232 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256131132]
[2023-11-29 06:59:52,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:59:52,233 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 06:59:52,233 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 06:59:52,234 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 06:59:52,235 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-11-29 06:59:55,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:59:55,708 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15782 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 06:59:55,744 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 06:59:56,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 94 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 06:59:56,102 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 06:59:56,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked.
[2023-11-29 06:59:56,323 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:59:56,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733050858]
[2023-11-29 06:59:56,323 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 06:59:56,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256131132]
[2023-11-29 06:59:56,323 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256131132] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 06:59:56,323 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 06:59:56,326 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 06:59:56,326 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866834653]
[2023-11-29 06:59:56,326 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:59:56,328 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 06:59:56,328 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:59:56,329 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 06:59:56,329 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 06:59:56,330 INFO  L87              Difference]: Start difference. First operand 5437 states and 9041 transitions. Second operand  has 5 states, 5 states have (on average 628.4) internal successors, (3142), 5 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:59,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:59:59,861 INFO  L93              Difference]: Finished difference Result 19701 states and 32669 transitions.
[2023-11-29 06:59:59,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 06:59:59,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 628.4) internal successors, (3142), 5 states have internal predecessors, (3142), 0 states have call successors, (0), 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 3367
[2023-11-29 06:59:59,864 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:59:59,872 INFO  L225             Difference]: With dead ends: 19701
[2023-11-29 06:59:59,872 INFO  L226             Difference]: Without dead ends: 10104
[2023-11-29 06:59:59,877 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6733 GetRequests, 6724 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 06:59:59,877 INFO  L413           NwaCegarLoop]: 14367 mSDtfsCounter, 21686 mSDsluCounter, 14291 mSDsCounter, 0 mSdLazyCounter, 3819 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21686 SdHoareTripleChecker+Valid, 28658 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:59:59,878 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21686 Valid, 28658 Invalid, 4076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3819 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-29 06:59:59,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10104 states.
[2023-11-29 06:59:59,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10104 to 5442.
[2023-11-29 06:59:59,966 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5442 states, 5441 states have (on average 1.6629296085278442) internal successors, (9048), 5441 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:59,972 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5442 states to 5442 states and 9048 transitions.
[2023-11-29 06:59:59,972 INFO  L78                 Accepts]: Start accepts. Automaton has 5442 states and 9048 transitions. Word has length 3367
[2023-11-29 06:59:59,974 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:59:59,974 INFO  L495      AbstractCegarLoop]: Abstraction has 5442 states and 9048 transitions.
[2023-11-29 06:59:59,975 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 628.4) internal successors, (3142), 5 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:59:59,975 INFO  L276                IsEmpty]: Start isEmpty. Operand 5442 states and 9048 transitions.
[2023-11-29 07:00:00,020 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3369
[2023-11-29 07:00:00,020 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:00,021 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 07:00:00,065 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-11-29 07:00:00,221 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2023-11-29 07:00:00,222 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:00,222 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:00,222 INFO  L85        PathProgramCache]: Analyzing trace with hash 2107214394, now seen corresponding path program 1 times
[2023-11-29 07:00:00,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:00,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942588131]
[2023-11-29 07:00:00,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:00,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:00,513 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:00,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055301561]
[2023-11-29 07:00:00,514 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:00,514 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:00,514 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:00,515 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:00,516 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-11-29 07:00:03,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:04,050 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15785 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:04,082 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:04,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 98 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:04,427 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:04,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-11-29 07:00:04,618 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:04,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942588131]
[2023-11-29 07:00:04,618 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:04,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055301561]
[2023-11-29 07:00:04,618 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055301561] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:04,618 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:04,621 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:04,621 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525292367]
[2023-11-29 07:00:04,621 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:04,623 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:04,623 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:04,625 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:04,625 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:04,626 INFO  L87              Difference]: Start difference. First operand 5442 states and 9048 transitions. Second operand  has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:07,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:07,991 INFO  L93              Difference]: Finished difference Result 19722 states and 32698 transitions.
[2023-11-29 07:00:07,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:07,992 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 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 3368
[2023-11-29 07:00:07,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:08,002 INFO  L225             Difference]: With dead ends: 19722
[2023-11-29 07:00:08,002 INFO  L226             Difference]: Without dead ends: 10105
[2023-11-29 07:00:08,007 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6735 GetRequests, 6726 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:08,007 INFO  L413           NwaCegarLoop]: 14359 mSDtfsCounter, 21634 mSDsluCounter, 14287 mSDsCounter, 0 mSdLazyCounter, 3819 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21634 SdHoareTripleChecker+Valid, 28646 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:08,007 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21634 Valid, 28646 Invalid, 4076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3819 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 07:00:08,015 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10105 states.
[2023-11-29 07:00:08,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10105 to 5444.
[2023-11-29 07:00:08,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5444 states, 5443 states have (on average 1.6626860187396657) internal successors, (9050), 5443 states have internal predecessors, (9050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:08,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 9050 transitions.
[2023-11-29 07:00:08,079 INFO  L78                 Accepts]: Start accepts. Automaton has 5444 states and 9050 transitions. Word has length 3368
[2023-11-29 07:00:08,080 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:08,080 INFO  L495      AbstractCegarLoop]: Abstraction has 5444 states and 9050 transitions.
[2023-11-29 07:00:08,081 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:08,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 5444 states and 9050 transitions.
[2023-11-29 07:00:08,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3370
[2023-11-29 07:00:08,126 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:08,127 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 07:00:08,172 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0
[2023-11-29 07:00:08,327 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:08,328 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:08,328 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:08,328 INFO  L85        PathProgramCache]: Analyzing trace with hash 204820440, now seen corresponding path program 1 times
[2023-11-29 07:00:08,328 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:08,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69711492]
[2023-11-29 07:00:08,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:08,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:08,610 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:08,610 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165550847]
[2023-11-29 07:00:08,611 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:08,611 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:08,611 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:08,612 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:08,613 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-11-29 07:00:11,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:11,988 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15788 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:12,021 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:12,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 100 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:12,397 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:12,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2023-11-29 07:00:12,611 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:12,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69711492]
[2023-11-29 07:00:12,612 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:12,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165550847]
[2023-11-29 07:00:12,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [165550847] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:12,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:12,615 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:12,615 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65862443]
[2023-11-29 07:00:12,615 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:12,616 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:12,616 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:12,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:12,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:12,619 INFO  L87              Difference]: Start difference. First operand 5444 states and 9050 transitions. Second operand  has 5 states, 5 states have (on average 630.0) internal successors, (3150), 5 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:16,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:16,079 INFO  L93              Difference]: Finished difference Result 19733 states and 32711 transitions.
[2023-11-29 07:00:16,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:16,079 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 630.0) internal successors, (3150), 5 states have internal predecessors, (3150), 0 states have call successors, (0), 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 3369
[2023-11-29 07:00:16,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:16,087 INFO  L225             Difference]: With dead ends: 19733
[2023-11-29 07:00:16,087 INFO  L226             Difference]: Without dead ends: 10109
[2023-11-29 07:00:16,090 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6737 GetRequests, 6728 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:16,090 INFO  L413           NwaCegarLoop]: 14346 mSDtfsCounter, 21666 mSDsluCounter, 14280 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21666 SdHoareTripleChecker+Valid, 28626 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:16,090 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21666 Valid, 28626 Invalid, 4072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 07:00:16,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10109 states.
[2023-11-29 07:00:16,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10109 to 5449.
[2023-11-29 07:00:16,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5449 states, 5448 states have (on average 1.6624449339207048) internal successors, (9057), 5448 states have internal predecessors, (9057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:16,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 9057 transitions.
[2023-11-29 07:00:16,158 INFO  L78                 Accepts]: Start accepts. Automaton has 5449 states and 9057 transitions. Word has length 3369
[2023-11-29 07:00:16,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:16,159 INFO  L495      AbstractCegarLoop]: Abstraction has 5449 states and 9057 transitions.
[2023-11-29 07:00:16,160 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 630.0) internal successors, (3150), 5 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:16,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 5449 states and 9057 transitions.
[2023-11-29 07:00:16,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3371
[2023-11-29 07:00:16,205 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:16,206 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:00:16,251 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-11-29 07:00:16,406 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:16,406 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:16,407 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:16,407 INFO  L85        PathProgramCache]: Analyzing trace with hash -1472815612, now seen corresponding path program 1 times
[2023-11-29 07:00:16,407 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:16,407 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119037647]
[2023-11-29 07:00:16,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:16,408 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:16,699 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:16,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032781072]
[2023-11-29 07:00:16,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:16,700 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:16,700 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:16,701 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:16,702 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-11-29 07:00:20,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:20,173 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15792 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:20,209 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:20,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 104 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:20,563 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:20,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-11-29 07:00:20,793 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:20,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119037647]
[2023-11-29 07:00:20,793 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:20,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032781072]
[2023-11-29 07:00:20,794 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032781072] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:20,794 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:20,796 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:20,796 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145709051]
[2023-11-29 07:00:20,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:20,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:20,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:20,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:20,799 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:20,800 INFO  L87              Difference]: Start difference. First operand 5449 states and 9057 transitions. Second operand  has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:24,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:24,172 INFO  L93              Difference]: Finished difference Result 19760 states and 32750 transitions.
[2023-11-29 07:00:24,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:24,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 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 3370
[2023-11-29 07:00:24,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:24,182 INFO  L225             Difference]: With dead ends: 19760
[2023-11-29 07:00:24,182 INFO  L226             Difference]: Without dead ends: 10113
[2023-11-29 07:00:24,187 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6739 GetRequests, 6730 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:24,188 INFO  L413           NwaCegarLoop]: 14333 mSDtfsCounter, 21654 mSDsluCounter, 14274 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21654 SdHoareTripleChecker+Valid, 28607 SdHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:24,188 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21654 Valid, 28607 Invalid, 4068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 07:00:24,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10113 states.
[2023-11-29 07:00:24,244 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 5454.
[2023-11-29 07:00:24,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5454 states, 5453 states have (on average 1.6622042912158446) internal successors, (9064), 5453 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:24,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 9064 transitions.
[2023-11-29 07:00:24,254 INFO  L78                 Accepts]: Start accepts. Automaton has 5454 states and 9064 transitions. Word has length 3370
[2023-11-29 07:00:24,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:24,256 INFO  L495      AbstractCegarLoop]: Abstraction has 5454 states and 9064 transitions.
[2023-11-29 07:00:24,257 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:24,257 INFO  L276                IsEmpty]: Start isEmpty. Operand 5454 states and 9064 transitions.
[2023-11-29 07:00:24,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3372
[2023-11-29 07:00:24,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:24,302 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 07:00:24,342 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-11-29 07:00:24,502 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-11-29 07:00:24,502 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:24,503 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:24,503 INFO  L85        PathProgramCache]: Analyzing trace with hash 21370762, now seen corresponding path program 1 times
[2023-11-29 07:00:24,503 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:24,503 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21153935]
[2023-11-29 07:00:24,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:24,504 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:24,776 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:24,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486132476]
[2023-11-29 07:00:24,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:24,777 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:24,777 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:24,777 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:24,778 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-11-29 07:00:28,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:28,133 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15795 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:28,164 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:28,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:28,518 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:28,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2023-11-29 07:00:28,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:28,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21153935]
[2023-11-29 07:00:28,743 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:28,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486132476]
[2023-11-29 07:00:28,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486132476] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:28,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:28,745 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:28,745 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442979663]
[2023-11-29 07:00:28,745 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:28,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:28,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:28,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:28,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:28,748 INFO  L87              Difference]: Start difference. First operand 5454 states and 9064 transitions. Second operand  has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:31,978 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:31,978 INFO  L93              Difference]: Finished difference Result 19784 states and 32784 transitions.
[2023-11-29 07:00:31,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:31,979 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 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 3371
[2023-11-29 07:00:31,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:31,989 INFO  L225             Difference]: With dead ends: 19784
[2023-11-29 07:00:31,989 INFO  L226             Difference]: Without dead ends: 10117
[2023-11-29 07:00:31,994 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6741 GetRequests, 6732 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:31,994 INFO  L413           NwaCegarLoop]: 14320 mSDtfsCounter, 21597 mSDsluCounter, 14269 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21597 SdHoareTripleChecker+Valid, 28589 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:31,995 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21597 Valid, 28589 Invalid, 4064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2023-11-29 07:00:32,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10117 states.
[2023-11-29 07:00:32,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 5459.
[2023-11-29 07:00:32,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5459 states, 5458 states have (on average 1.6619640894100403) internal successors, (9071), 5458 states have internal predecessors, (9071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:32,063 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 9071 transitions.
[2023-11-29 07:00:32,064 INFO  L78                 Accepts]: Start accepts. Automaton has 5459 states and 9071 transitions. Word has length 3371
[2023-11-29 07:00:32,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:32,066 INFO  L495      AbstractCegarLoop]: Abstraction has 5459 states and 9071 transitions.
[2023-11-29 07:00:32,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:32,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 5459 states and 9071 transitions.
[2023-11-29 07:00:32,111 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3373
[2023-11-29 07:00:32,111 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:32,112 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 07:00:32,152 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2023-11-29 07:00:32,312 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2023-11-29 07:00:32,313 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:32,313 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:32,313 INFO  L85        PathProgramCache]: Analyzing trace with hash 406923854, now seen corresponding path program 1 times
[2023-11-29 07:00:32,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:32,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201614807]
[2023-11-29 07:00:32,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:32,314 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:32,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:32,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564919184]
[2023-11-29 07:00:32,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:32,605 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:32,606 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:32,606 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:32,607 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-11-29 07:00:36,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:36,185 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15799 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:36,218 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:36,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:36,574 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:36,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2023-11-29 07:00:36,885 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:36,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201614807]
[2023-11-29 07:00:36,885 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:36,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564919184]
[2023-11-29 07:00:36,885 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [564919184] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:36,885 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:36,887 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:36,887 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759995118]
[2023-11-29 07:00:36,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:36,890 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:36,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:36,891 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:36,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:36,892 INFO  L87              Difference]: Start difference. First operand 5459 states and 9071 transitions. Second operand  has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:40,187 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:40,187 INFO  L93              Difference]: Finished difference Result 19808 states and 32818 transitions.
[2023-11-29 07:00:40,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:40,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 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 3372
[2023-11-29 07:00:40,190 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:40,197 INFO  L225             Difference]: With dead ends: 19808
[2023-11-29 07:00:40,197 INFO  L226             Difference]: Without dead ends: 10121
[2023-11-29 07:00:40,202 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6743 GetRequests, 6734 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:40,202 INFO  L413           NwaCegarLoop]: 14307 mSDtfsCounter, 21630 mSDsluCounter, 14262 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21630 SdHoareTripleChecker+Valid, 28569 SdHoareTripleChecker+Invalid, 4060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:40,202 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21630 Valid, 28569 Invalid, 4060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 07:00:40,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10121 states.
[2023-11-29 07:00:40,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10121 to 5464.
[2023-11-29 07:00:40,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5464 states, 5463 states have (on average 1.6617243272926963) internal successors, (9078), 5463 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:40,265 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 9078 transitions.
[2023-11-29 07:00:40,265 INFO  L78                 Accepts]: Start accepts. Automaton has 5464 states and 9078 transitions. Word has length 3372
[2023-11-29 07:00:40,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:40,267 INFO  L495      AbstractCegarLoop]: Abstraction has 5464 states and 9078 transitions.
[2023-11-29 07:00:40,268 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:40,268 INFO  L276                IsEmpty]: Start isEmpty. Operand 5464 states and 9078 transitions.
[2023-11-29 07:00:40,312 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3374
[2023-11-29 07:00:40,312 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:40,313 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:00:40,353 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-11-29 07:00:40,513 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:40,514 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:40,514 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:40,514 INFO  L85        PathProgramCache]: Analyzing trace with hash 2128599996, now seen corresponding path program 1 times
[2023-11-29 07:00:40,514 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:40,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715224892]
[2023-11-29 07:00:40,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:40,515 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:40,784 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:40,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468763556]
[2023-11-29 07:00:40,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:40,785 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:40,785 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:40,786 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:40,787 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-11-29 07:00:44,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:44,239 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15802 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:44,271 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:44,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 116 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:44,597 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:44,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2023-11-29 07:00:44,811 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:44,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715224892]
[2023-11-29 07:00:44,811 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:44,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468763556]
[2023-11-29 07:00:44,811 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468763556] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:44,812 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:44,814 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:44,814 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582900874]
[2023-11-29 07:00:44,814 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:44,816 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:44,816 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:44,817 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:44,817 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:44,818 INFO  L87              Difference]: Start difference. First operand 5464 states and 9078 transitions. Second operand  has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:48,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:48,179 INFO  L93              Difference]: Finished difference Result 19832 states and 32852 transitions.
[2023-11-29 07:00:48,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:48,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 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 3373
[2023-11-29 07:00:48,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:48,191 INFO  L225             Difference]: With dead ends: 19832
[2023-11-29 07:00:48,191 INFO  L226             Difference]: Without dead ends: 10125
[2023-11-29 07:00:48,196 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6745 GetRequests, 6736 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:48,196 INFO  L413           NwaCegarLoop]: 14294 mSDtfsCounter, 21618 mSDsluCounter, 14256 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21618 SdHoareTripleChecker+Valid, 28550 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:48,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21618 Valid, 28550 Invalid, 4056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 07:00:48,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10125 states.
[2023-11-29 07:00:48,250 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 5469.
[2023-11-29 07:00:48,254 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5469 states, 5468 states have (on average 1.6614850036576445) internal successors, (9085), 5468 states have internal predecessors, (9085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:48,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 9085 transitions.
[2023-11-29 07:00:48,260 INFO  L78                 Accepts]: Start accepts. Automaton has 5469 states and 9085 transitions. Word has length 3373
[2023-11-29 07:00:48,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:48,262 INFO  L495      AbstractCegarLoop]: Abstraction has 5469 states and 9085 transitions.
[2023-11-29 07:00:48,262 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:48,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 5469 states and 9085 transitions.
[2023-11-29 07:00:48,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3375
[2023-11-29 07:00:48,349 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:48,349 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:48,389 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0
[2023-11-29 07:00:48,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-11-29 07:00:48,550 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:48,551 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:48,552 INFO  L85        PathProgramCache]: Analyzing trace with hash 591744792, now seen corresponding path program 1 times
[2023-11-29 07:00:48,552 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:48,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865733292]
[2023-11-29 07:00:48,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:48,553 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:48,824 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:48,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058685682]
[2023-11-29 07:00:48,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:48,824 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:48,825 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:48,825 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:48,826 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-11-29 07:00:52,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:00:52,349 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15806 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:00:52,381 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:00:52,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 120 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:00:52,707 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:00:52,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2023-11-29 07:00:52,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:00:52,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865733292]
[2023-11-29 07:00:52,962 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:00:52,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058685682]
[2023-11-29 07:00:52,962 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058685682] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:00:52,962 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:00:52,965 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:00:52,965 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547854674]
[2023-11-29 07:00:52,965 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:00:52,966 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:00:52,966 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:00:52,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:00:52,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:00:52,968 INFO  L87              Difference]: Start difference. First operand 5469 states and 9085 transitions. Second operand  has 5 states, 5 states have (on average 635.0) internal successors, (3175), 5 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:56,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:00:56,655 INFO  L93              Difference]: Finished difference Result 19856 states and 32886 transitions.
[2023-11-29 07:00:56,656 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:00:56,656 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 635.0) internal successors, (3175), 5 states have internal predecessors, (3175), 0 states have call successors, (0), 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 3374
[2023-11-29 07:00:56,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:00:56,667 INFO  L225             Difference]: With dead ends: 19856
[2023-11-29 07:00:56,667 INFO  L226             Difference]: Without dead ends: 10129
[2023-11-29 07:00:56,672 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6747 GetRequests, 6738 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:00:56,673 INFO  L413           NwaCegarLoop]: 14281 mSDtfsCounter, 14636 mSDsluCounter, 21496 mSDsCounter, 0 mSdLazyCounter, 5175 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14636 SdHoareTripleChecker+Valid, 35777 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-11-29 07:00:56,673 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14636 Valid, 35777 Invalid, 5432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5175 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-11-29 07:00:56,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10129 states.
[2023-11-29 07:00:56,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10129 to 5474.
[2023-11-29 07:00:56,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5474 states, 5473 states have (on average 1.6612461173031243) internal successors, (9092), 5473 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:56,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5474 states to 5474 states and 9092 transitions.
[2023-11-29 07:00:56,739 INFO  L78                 Accepts]: Start accepts. Automaton has 5474 states and 9092 transitions. Word has length 3374
[2023-11-29 07:00:56,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:00:56,740 INFO  L495      AbstractCegarLoop]: Abstraction has 5474 states and 9092 transitions.
[2023-11-29 07:00:56,741 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 635.0) internal successors, (3175), 5 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:00:56,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 5474 states and 9092 transitions.
[2023-11-29 07:00:56,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3376
[2023-11-29 07:00:56,785 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:00:56,786 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:56,827 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2023-11-29 07:00:56,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60
[2023-11-29 07:00:56,987 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:00:56,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:00:56,987 INFO  L85        PathProgramCache]: Analyzing trace with hash -1363133330, now seen corresponding path program 1 times
[2023-11-29 07:00:56,987 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:00:56,987 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953497535]
[2023-11-29 07:00:56,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:56,988 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:00:57,260 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:00:57,260 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539141105]
[2023-11-29 07:00:57,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:00:57,261 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:00:57,261 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:00:57,262 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:00:57,263 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-11-29 07:01:00,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:00,756 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15809 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:01:00,786 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:01,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 124 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:01,143 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:01,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked.
[2023-11-29 07:01:01,397 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:01,397 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953497535]
[2023-11-29 07:01:01,397 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:01,397 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539141105]
[2023-11-29 07:01:01,397 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [539141105] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:01,397 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:01,399 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:01:01,399 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640317972]
[2023-11-29 07:01:01,399 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:01,400 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:01,400 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:01,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:01,402 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:01:01,402 INFO  L87              Difference]: Start difference. First operand 5474 states and 9092 transitions. Second operand  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:04,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:04,819 INFO  L93              Difference]: Finished difference Result 19880 states and 32920 transitions.
[2023-11-29 07:01:04,820 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 07:01:04,821 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 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 3375
[2023-11-29 07:01:04,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:04,832 INFO  L225             Difference]: With dead ends: 19880
[2023-11-29 07:01:04,832 INFO  L226             Difference]: Without dead ends: 10133
[2023-11-29 07:01:04,836 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6749 GetRequests, 6740 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:04,837 INFO  L413           NwaCegarLoop]: 14268 mSDtfsCounter, 21594 mSDsluCounter, 14244 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21594 SdHoareTripleChecker+Valid, 28512 SdHoareTripleChecker+Invalid, 4048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:04,837 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21594 Valid, 28512 Invalid, 4048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3791 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 07:01:04,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10133 states.
[2023-11-29 07:01:04,890 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 5479.
[2023-11-29 07:01:04,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5479 states, 5478 states have (on average 1.6610076670317635) internal successors, (9099), 5478 states have internal predecessors, (9099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:04,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 9099 transitions.
[2023-11-29 07:01:04,900 INFO  L78                 Accepts]: Start accepts. Automaton has 5479 states and 9099 transitions. Word has length 3375
[2023-11-29 07:01:04,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:04,901 INFO  L495      AbstractCegarLoop]: Abstraction has 5479 states and 9099 transitions.
[2023-11-29 07:01:04,902 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:04,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 5479 states and 9099 transitions.
[2023-11-29 07:01:04,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3377
[2023-11-29 07:01:04,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:04,947 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:01:04,987 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0
[2023-11-29 07:01:05,147 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:05,148 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:05,148 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:05,148 INFO  L85        PathProgramCache]: Analyzing trace with hash -285791134, now seen corresponding path program 1 times
[2023-11-29 07:01:05,148 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:05,148 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697171673]
[2023-11-29 07:01:05,149 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:05,149 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:05,419 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:05,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316757503]
[2023-11-29 07:01:05,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:05,419 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:05,420 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:05,420 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:05,421 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-11-29 07:01:08,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:08,613 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15813 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 07:01:08,644 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:08,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 128 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:08,982 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:09,226 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked.
[2023-11-29 07:01:09,226 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:09,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697171673]
[2023-11-29 07:01:09,226 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:09,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316757503]
[2023-11-29 07:01:09,226 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [316757503] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:09,226 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:09,228 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 07:01:09,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382866998]
[2023-11-29 07:01:09,228 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:09,230 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:09,230 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:09,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:09,231 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 07:01:09,232 INFO  L87              Difference]: Start difference. First operand 5479 states and 9099 transitions. Second operand  has 5 states, 5 states have (on average 636.6) internal successors, (3183), 5 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:13,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:13,086 INFO  L93              Difference]: Finished difference Result 19897 states and 32943 transitions.
[2023-11-29 07:01:13,086 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:13,087 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 636.6) internal successors, (3183), 5 states have internal predecessors, (3183), 0 states have call successors, (0), 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 3376
[2023-11-29 07:01:13,090 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:13,097 INFO  L225             Difference]: With dead ends: 19897
[2023-11-29 07:01:13,097 INFO  L226             Difference]: Without dead ends: 10130
[2023-11-29 07:01:13,101 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6751 GetRequests, 6742 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:13,101 INFO  L413           NwaCegarLoop]: 14260 mSDtfsCounter, 14617 mSDsluCounter, 21479 mSDsCounter, 0 mSdLazyCounter, 5147 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14617 SdHoareTripleChecker+Valid, 35739 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 5147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:13,101 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14617 Valid, 35739 Invalid, 5405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [258 Valid, 5147 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 07:01:13,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10130 states.
[2023-11-29 07:01:13,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10130 to 5481.
[2023-11-29 07:01:13,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:13,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:13,162 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3376
[2023-11-29 07:01:13,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:13,164 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:13,164 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 636.6) internal successors, (3183), 5 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:13,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:13,208 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3378
[2023-11-29 07:01:13,208 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:13,209 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:13,250 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-11-29 07:01:13,409 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:13,410 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:13,410 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:13,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 1621866502, now seen corresponding path program 1 times
[2023-11-29 07:01:13,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:13,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677753431]
[2023-11-29 07:01:13,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:13,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:13,691 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:13,691 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825780303]
[2023-11-29 07:01:13,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:13,692 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:13,692 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:13,693 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:13,693 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-11-29 07:01:16,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:16,997 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15816 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:01:17,029 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:17,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 124 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:17,380 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:17,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked.
[2023-11-29 07:01:17,452 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:17,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677753431]
[2023-11-29 07:01:17,452 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:17,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825780303]
[2023-11-29 07:01:17,452 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [825780303] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:17,452 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:17,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:17,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653105399]
[2023-11-29 07:01:17,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:17,455 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:17,455 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:17,457 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:17,457 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:17,458 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 636.4) internal successors, (3182), 5 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:17,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:17,764 INFO  L93              Difference]: Finished difference Result 20173 states and 33490 transitions.
[2023-11-29 07:01:17,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:17,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 636.4) internal successors, (3182), 5 states have internal predecessors, (3182), 0 states have call successors, (0), 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 3377
[2023-11-29 07:01:17,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:17,778 INFO  L225             Difference]: With dead ends: 20173
[2023-11-29 07:01:17,778 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:01:17,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6752 GetRequests, 6743 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:17,783 INFO  L413           NwaCegarLoop]: 16470 mSDtfsCounter, 15562 mSDsluCounter, 41042 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15562 SdHoareTripleChecker+Valid, 57512 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:17,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15562 Valid, 57512 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:17,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:01:17,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:01:17,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:17,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:17,859 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3377
[2023-11-29 07:01:17,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:17,861 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:17,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 636.4) internal successors, (3182), 5 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:17,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:17,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3379
[2023-11-29 07:01:17,906 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:17,906 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:17,948 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0
[2023-11-29 07:01:18,107 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:18,107 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:18,107 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:18,108 INFO  L85        PathProgramCache]: Analyzing trace with hash -1890514714, now seen corresponding path program 1 times
[2023-11-29 07:01:18,108 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:18,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712889008]
[2023-11-29 07:01:18,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:18,108 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:18,379 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:18,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296209586]
[2023-11-29 07:01:18,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:18,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:18,379 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:18,380 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:18,381 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-11-29 07:01:21,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:21,793 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15819 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 07:01:21,824 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:22,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 120 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:22,162 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:22,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2023-11-29 07:01:22,223 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:22,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712889008]
[2023-11-29 07:01:22,223 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:22,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296209586]
[2023-11-29 07:01:22,224 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296209586] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:22,224 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:22,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-11-29 07:01:22,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270629986]
[2023-11-29 07:01:22,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:22,227 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 07:01:22,227 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:22,228 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 07:01:22,228 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:22,229 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 4 states, 4 states have (on average 795.25) internal successors, (3181), 4 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:22,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:22,389 INFO  L93              Difference]: Finished difference Result 15163 states and 25172 transitions.
[2023-11-29 07:01:22,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 07:01:22,390 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 795.25) internal successors, (3181), 4 states have internal predecessors, (3181), 0 states have call successors, (0), 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 3378
[2023-11-29 07:01:22,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:22,400 INFO  L225             Difference]: With dead ends: 15163
[2023-11-29 07:01:22,400 INFO  L226             Difference]: Without dead ends: 10144
[2023-11-29 07:01:22,403 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6754 GetRequests, 6747 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:22,404 INFO  L413           NwaCegarLoop]: 8624 mSDtfsCounter, 7710 mSDsluCounter, 16736 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7710 SdHoareTripleChecker+Valid, 25360 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:22,404 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7710 Valid, 25360 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:22,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10144 states.
[2023-11-29 07:01:22,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 5481.
[2023-11-29 07:01:22,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:22,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:22,466 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3378
[2023-11-29 07:01:22,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:22,467 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:22,468 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 795.25) internal successors, (3181), 4 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:22,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:22,512 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3380
[2023-11-29 07:01:22,512 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:22,513 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:01:22,554 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0
[2023-11-29 07:01:22,713 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:22,714 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:22,714 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:22,714 INFO  L85        PathProgramCache]: Analyzing trace with hash 1966359110, now seen corresponding path program 1 times
[2023-11-29 07:01:22,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:22,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934846543]
[2023-11-29 07:01:22,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:22,715 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:22,984 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:22,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824325345]
[2023-11-29 07:01:22,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:22,985 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:22,985 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:22,986 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:22,986 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-11-29 07:01:26,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:26,298 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15822 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:01:26,329 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:26,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 116 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:26,686 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:26,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2023-11-29 07:01:26,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:26,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934846543]
[2023-11-29 07:01:26,762 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:26,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824325345]
[2023-11-29 07:01:26,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824325345] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:26,762 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:26,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:26,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234944838]
[2023-11-29 07:01:26,764 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:26,766 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:26,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:26,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:26,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:26,768 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:27,065 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:27,065 INFO  L93              Difference]: Finished difference Result 20161 states and 33470 transitions.
[2023-11-29 07:01:27,066 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:27,067 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 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 3379
[2023-11-29 07:01:27,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:27,080 INFO  L225             Difference]: With dead ends: 20161
[2023-11-29 07:01:27,080 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:01:27,084 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6756 GetRequests, 6747 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:27,084 INFO  L413           NwaCegarLoop]: 16490 mSDtfsCounter, 15568 mSDsluCounter, 41082 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15568 SdHoareTripleChecker+Valid, 57572 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:27,085 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15568 Valid, 57572 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:27,094 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:01:27,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:01:27,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:27,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:27,163 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3379
[2023-11-29 07:01:27,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:27,164 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:27,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:27,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:27,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3381
[2023-11-29 07:01:27,246 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:27,247 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:27,289 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0
[2023-11-29 07:01:27,447 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:27,448 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:27,449 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:27,449 INFO  L85        PathProgramCache]: Analyzing trace with hash -1646390806, now seen corresponding path program 1 times
[2023-11-29 07:01:27,449 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:27,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628769884]
[2023-11-29 07:01:27,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:27,450 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:27,722 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:27,722 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2642539]
[2023-11-29 07:01:27,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:27,723 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:27,723 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:27,723 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:27,724 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-11-29 07:01:31,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:31,158 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15825 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 07:01:31,189 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:31,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:31,537 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:31,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked.
[2023-11-29 07:01:31,592 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:31,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628769884]
[2023-11-29 07:01:31,592 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:31,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2642539]
[2023-11-29 07:01:31,592 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2642539] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:31,592 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:31,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-11-29 07:01:31,594 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049962894]
[2023-11-29 07:01:31,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:31,596 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 07:01:31,596 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:31,597 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 07:01:31,597 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:31,598 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 4 states, 4 states have (on average 794.75) internal successors, (3179), 4 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:31,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:31,757 INFO  L93              Difference]: Finished difference Result 15163 states and 25172 transitions.
[2023-11-29 07:01:31,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 07:01:31,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 794.75) internal successors, (3179), 4 states have internal predecessors, (3179), 0 states have call successors, (0), 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 3380
[2023-11-29 07:01:31,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:31,768 INFO  L225             Difference]: With dead ends: 15163
[2023-11-29 07:01:31,768 INFO  L226             Difference]: Without dead ends: 10156
[2023-11-29 07:01:31,771 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6758 GetRequests, 6751 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:31,771 INFO  L413           NwaCegarLoop]: 8644 mSDtfsCounter, 7716 mSDsluCounter, 16756 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7716 SdHoareTripleChecker+Valid, 25400 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:31,772 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7716 Valid, 25400 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:31,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10156 states.
[2023-11-29 07:01:31,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 5481.
[2023-11-29 07:01:31,829 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:31,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:31,835 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3380
[2023-11-29 07:01:31,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:31,837 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:31,837 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 794.75) internal successors, (3179), 4 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:31,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:31,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3382
[2023-11-29 07:01:31,882 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:31,882 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:31,923 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0
[2023-11-29 07:01:32,083 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2023-11-29 07:01:32,083 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:32,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:32,084 INFO  L85        PathProgramCache]: Analyzing trace with hash -225086202, now seen corresponding path program 1 times
[2023-11-29 07:01:32,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:32,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117726940]
[2023-11-29 07:01:32,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:32,085 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:32,356 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:32,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311764540]
[2023-11-29 07:01:32,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:32,357 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:32,357 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:32,358 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:32,358 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-11-29 07:01:35,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:35,744 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15828 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:01:35,775 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:36,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:36,213 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:36,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked.
[2023-11-29 07:01:36,292 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:36,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117726940]
[2023-11-29 07:01:36,292 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:36,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311764540]
[2023-11-29 07:01:36,292 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [311764540] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:36,292 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:36,294 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:36,294 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880835035]
[2023-11-29 07:01:36,294 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:36,295 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:36,295 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:36,297 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:36,297 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:36,297 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 635.6) internal successors, (3178), 5 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:36,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:36,597 INFO  L93              Difference]: Finished difference Result 20149 states and 33450 transitions.
[2023-11-29 07:01:36,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:36,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 635.6) internal successors, (3178), 5 states have internal predecessors, (3178), 0 states have call successors, (0), 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 3381
[2023-11-29 07:01:36,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:36,612 INFO  L225             Difference]: With dead ends: 20149
[2023-11-29 07:01:36,612 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:01:36,617 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6760 GetRequests, 6751 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:36,617 INFO  L413           NwaCegarLoop]: 16510 mSDtfsCounter, 15574 mSDsluCounter, 41122 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15574 SdHoareTripleChecker+Valid, 57632 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:36,617 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15574 Valid, 57632 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:36,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:01:36,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:01:36,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:36,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:36,697 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3381
[2023-11-29 07:01:36,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:36,698 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:36,699 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 635.6) internal successors, (3178), 5 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:36,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:36,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3383
[2023-11-29 07:01:36,743 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:36,744 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:01:36,786 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0
[2023-11-29 07:01:36,944 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2023-11-29 07:01:36,945 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:36,945 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:36,945 INFO  L85        PathProgramCache]: Analyzing trace with hash -357824658, now seen corresponding path program 1 times
[2023-11-29 07:01:36,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:36,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223739340]
[2023-11-29 07:01:36,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:36,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:37,225 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:37,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833855395]
[2023-11-29 07:01:37,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:37,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:37,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:37,226 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:37,227 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-11-29 07:01:40,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:40,603 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15831 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 07:01:40,634 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:40,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 104 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:40,995 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:41,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked.
[2023-11-29 07:01:41,049 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:41,049 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223739340]
[2023-11-29 07:01:41,049 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:41,049 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833855395]
[2023-11-29 07:01:41,050 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [833855395] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:41,050 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:41,052 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-11-29 07:01:41,052 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263191442]
[2023-11-29 07:01:41,052 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:41,054 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 07:01:41,054 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:41,055 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 07:01:41,055 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:41,056 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 4 states, 4 states have (on average 794.25) internal successors, (3177), 4 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:41,213 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:41,213 INFO  L93              Difference]: Finished difference Result 15163 states and 25172 transitions.
[2023-11-29 07:01:41,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 07:01:41,214 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 794.25) internal successors, (3177), 4 states have internal predecessors, (3177), 0 states have call successors, (0), 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 3382
[2023-11-29 07:01:41,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:41,224 INFO  L225             Difference]: With dead ends: 15163
[2023-11-29 07:01:41,224 INFO  L226             Difference]: Without dead ends: 10168
[2023-11-29 07:01:41,227 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6762 GetRequests, 6755 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:01:41,227 INFO  L413           NwaCegarLoop]: 8664 mSDtfsCounter, 7722 mSDsluCounter, 16776 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7722 SdHoareTripleChecker+Valid, 25440 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:41,227 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7722 Valid, 25440 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:41,237 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10168 states.
[2023-11-29 07:01:41,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 5481.
[2023-11-29 07:01:41,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:41,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:41,293 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3382
[2023-11-29 07:01:41,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:41,294 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:41,295 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 794.25) internal successors, (3177), 4 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:41,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:41,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3384
[2023-11-29 07:01:41,339 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:41,340 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-11-29 07:01:41,381 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0
[2023-11-29 07:01:41,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-11-29 07:01:41,541 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:41,541 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:41,542 INFO  L85        PathProgramCache]: Analyzing trace with hash -744763322, now seen corresponding path program 1 times
[2023-11-29 07:01:41,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:41,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838742744]
[2023-11-29 07:01:41,543 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:41,543 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:41,814 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:41,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399895617]
[2023-11-29 07:01:41,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:41,814 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:41,815 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:41,815 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:41,816 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-11-29 07:01:45,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:45,261 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15834 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:01:45,292 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:45,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 100 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:45,639 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:45,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-11-29 07:01:45,707 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:45,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838742744]
[2023-11-29 07:01:45,708 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:45,708 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399895617]
[2023-11-29 07:01:45,708 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399895617] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:45,708 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:45,709 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:45,710 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946329294]
[2023-11-29 07:01:45,710 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:45,711 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:45,711 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:45,712 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:45,712 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:45,713 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 635.2) internal successors, (3176), 5 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:46,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:46,012 INFO  L93              Difference]: Finished difference Result 20140 states and 33435 transitions.
[2023-11-29 07:01:46,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:46,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 635.2) internal successors, (3176), 5 states have internal predecessors, (3176), 0 states have call successors, (0), 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 3383
[2023-11-29 07:01:46,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:46,031 INFO  L225             Difference]: With dead ends: 20140
[2023-11-29 07:01:46,031 INFO  L226             Difference]: Without dead ends: 15151
[2023-11-29 07:01:46,037 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6764 GetRequests, 6755 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:46,038 INFO  L413           NwaCegarLoop]: 16530 mSDtfsCounter, 15580 mSDsluCounter, 41162 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15580 SdHoareTripleChecker+Valid, 57692 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:46,038 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15580 Valid, 57692 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:46,051 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15151 states.
[2023-11-29 07:01:46,127 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 5481.
[2023-11-29 07:01:46,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:46,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:46,138 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3383
[2023-11-29 07:01:46,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:46,139 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:46,140 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 635.2) internal successors, (3176), 5 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:46,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:46,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3385
[2023-11-29 07:01:46,185 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:46,186 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:46,228 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2023-11-29 07:01:46,386 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2023-11-29 07:01:46,386 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:46,387 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:46,388 INFO  L85        PathProgramCache]: Analyzing trace with hash 1383115122, now seen corresponding path program 1 times
[2023-11-29 07:01:46,388 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:46,388 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129232057]
[2023-11-29 07:01:46,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:46,389 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:46,664 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:46,664 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491673302]
[2023-11-29 07:01:46,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:46,665 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:46,665 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:46,666 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:46,666 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-11-29 07:01:50,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:50,178 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15837 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:01:50,210 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:50,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 94 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:50,653 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:50,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked.
[2023-11-29 07:01:50,728 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:50,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129232057]
[2023-11-29 07:01:50,728 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:50,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491673302]
[2023-11-29 07:01:50,728 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [491673302] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:50,728 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:50,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:50,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508092653]
[2023-11-29 07:01:50,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:50,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:50,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:50,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:50,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:50,735 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:51,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:51,038 INFO  L93              Difference]: Finished difference Result 20128 states and 33415 transitions.
[2023-11-29 07:01:51,038 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:51,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 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 3384
[2023-11-29 07:01:51,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:51,103 INFO  L225             Difference]: With dead ends: 20128
[2023-11-29 07:01:51,103 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:01:51,105 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6766 GetRequests, 6757 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:51,105 INFO  L413           NwaCegarLoop]: 16545 mSDtfsCounter, 15586 mSDsluCounter, 41192 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15586 SdHoareTripleChecker+Valid, 57737 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:51,105 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15586 Valid, 57737 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:51,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:01:51,166 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:01:51,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:51,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:51,175 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3384
[2023-11-29 07:01:51,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:51,177 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:51,177 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:51,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:51,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3386
[2023-11-29 07:01:51,222 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:51,222 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2023-11-29 07:01:51,263 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0
[2023-11-29 07:01:51,423 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:51,423 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:51,423 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:51,424 INFO  L85        PathProgramCache]: Analyzing trace with hash 1506626590, now seen corresponding path program 1 times
[2023-11-29 07:01:51,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:51,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001862309]
[2023-11-29 07:01:51,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:51,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:51,693 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:51,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212611901]
[2023-11-29 07:01:51,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:51,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:51,694 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:51,695 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:51,696 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-11-29 07:01:55,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:01:55,120 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15841 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:01:55,151 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:01:55,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 90 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:01:55,521 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:01:55,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked.
[2023-11-29 07:01:55,598 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:01:55,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001862309]
[2023-11-29 07:01:55,598 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:01:55,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212611901]
[2023-11-29 07:01:55,598 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [212611901] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:01:55,598 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:01:55,600 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:01:55,600 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835885486]
[2023-11-29 07:01:55,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:01:55,602 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:01:55,602 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:01:55,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:01:55,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:55,604 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:55,910 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:01:55,910 INFO  L93              Difference]: Finished difference Result 20125 states and 33410 transitions.
[2023-11-29 07:01:55,910 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:01:55,911 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 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 3385
[2023-11-29 07:01:55,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:01:55,924 INFO  L225             Difference]: With dead ends: 20125
[2023-11-29 07:01:55,924 INFO  L226             Difference]: Without dead ends: 15151
[2023-11-29 07:01:55,929 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6768 GetRequests, 6759 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:01:55,929 INFO  L413           NwaCegarLoop]: 16555 mSDtfsCounter, 15589 mSDsluCounter, 41212 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15589 SdHoareTripleChecker+Valid, 57767 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:01:55,929 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15589 Valid, 57767 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:01:55,942 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15151 states.
[2023-11-29 07:01:56,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 5481.
[2023-11-29 07:01:56,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:56,014 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:01:56,014 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3385
[2023-11-29 07:01:56,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:01:56,015 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:01:56,016 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:01:56,016 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:01:56,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3387
[2023-11-29 07:01:56,061 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:01:56,061 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:56,102 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0
[2023-11-29 07:01:56,262 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:56,262 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:01:56,262 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:01:56,263 INFO  L85        PathProgramCache]: Analyzing trace with hash 762491508, now seen corresponding path program 1 times
[2023-11-29 07:01:56,263 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:01:56,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908488044]
[2023-11-29 07:01:56,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:56,263 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:01:56,541 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:01:56,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515491796]
[2023-11-29 07:01:56,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:01:56,542 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:01:56,542 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:01:56,543 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:01:56,543 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-11-29 07:02:00,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:00,109 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15844 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:02:00,139 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:00,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 84 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:00,478 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:02:00,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked.
[2023-11-29 07:02:00,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:00,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908488044]
[2023-11-29 07:02:00,548 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:00,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515491796]
[2023-11-29 07:02:00,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515491796] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:02:00,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:02:00,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:02:00,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361531215]
[2023-11-29 07:02:00,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:00,552 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:02:00,552 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:00,553 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:02:00,553 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:00,553 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 634.2) internal successors, (3171), 5 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:00,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:00,879 INFO  L93              Difference]: Finished difference Result 20113 states and 33390 transitions.
[2023-11-29 07:02:00,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:02:00,880 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 634.2) internal successors, (3171), 5 states have internal predecessors, (3171), 0 states have call successors, (0), 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 3386
[2023-11-29 07:02:00,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:00,894 INFO  L225             Difference]: With dead ends: 20113
[2023-11-29 07:02:00,894 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:02:00,898 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6770 GetRequests, 6761 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:00,898 INFO  L413           NwaCegarLoop]: 16570 mSDtfsCounter, 15595 mSDsluCounter, 41242 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15595 SdHoareTripleChecker+Valid, 57812 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:00,898 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15595 Valid, 57812 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:02:00,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:02:00,966 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:02:00,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:00,976 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:02:00,976 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3386
[2023-11-29 07:02:00,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:00,977 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:02:00,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 634.2) internal successors, (3171), 5 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:00,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:02:01,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3388
[2023-11-29 07:02:01,022 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:01,023 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:01,064 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2023-11-29 07:02:01,223 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:01,224 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:01,224 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:01,224 INFO  L85        PathProgramCache]: Analyzing trace with hash 1900321088, now seen corresponding path program 1 times
[2023-11-29 07:02:01,224 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:01,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030321202]
[2023-11-29 07:02:01,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:01,225 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:01,494 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:01,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61038905]
[2023-11-29 07:02:01,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:01,494 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:01,495 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:01,495 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:01,496 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-11-29 07:02:04,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:04,774 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15847 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-11-29 07:02:04,805 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:05,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:05,148 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:02:05,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2023-11-29 07:02:05,200 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:05,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030321202]
[2023-11-29 07:02:05,200 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:05,200 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61038905]
[2023-11-29 07:02:05,200 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [61038905] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:02:05,200 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:02:05,203 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-11-29 07:02:05,203 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804635001]
[2023-11-29 07:02:05,203 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:05,204 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 07:02:05,204 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:05,206 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 07:02:05,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:02:05,206 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 4 states, 4 states have (on average 792.5) internal successors, (3170), 4 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:05,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:05,370 INFO  L93              Difference]: Finished difference Result 15163 states and 25172 transitions.
[2023-11-29 07:02:05,370 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 07:02:05,371 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 792.5) internal successors, (3170), 4 states have internal predecessors, (3170), 0 states have call successors, (0), 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 3387
[2023-11-29 07:02:05,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:05,380 INFO  L225             Difference]: With dead ends: 15163
[2023-11-29 07:02:05,380 INFO  L226             Difference]: Without dead ends: 10204
[2023-11-29 07:02:05,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6772 GetRequests, 6765 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-11-29 07:02:05,383 INFO  L413           NwaCegarLoop]: 8724 mSDtfsCounter, 7743 mSDsluCounter, 16836 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7743 SdHoareTripleChecker+Valid, 25560 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:05,383 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7743 Valid, 25560 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:02:05,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10204 states.
[2023-11-29 07:02:05,436 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10204 to 5481.
[2023-11-29 07:02:05,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:05,446 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:02:05,446 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3387
[2023-11-29 07:02:05,447 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:05,447 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:02:05,448 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 792.5) internal successors, (3170), 4 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:05,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:02:05,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3389
[2023-11-29 07:02:05,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:05,493 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:05,534 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0
[2023-11-29 07:02:05,694 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:05,694 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:05,694 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:05,695 INFO  L85        PathProgramCache]: Analyzing trace with hash -682342988, now seen corresponding path program 1 times
[2023-11-29 07:02:05,695 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:05,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671706700]
[2023-11-29 07:02:05,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:05,697 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:05,999 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:06,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381319725]
[2023-11-29 07:02:06,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:06,000 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:06,001 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:06,001 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:06,002 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-11-29 07:02:09,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:09,422 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15850 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:02:09,453 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:09,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 74 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:09,783 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:02:09,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-11-29 07:02:09,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:09,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671706700]
[2023-11-29 07:02:09,847 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:09,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381319725]
[2023-11-29 07:02:09,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381319725] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:02:09,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:02:09,850 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:02:09,850 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853489476]
[2023-11-29 07:02:09,850 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:09,851 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:02:09,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:09,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:02:09,853 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:09,853 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 633.6) internal successors, (3168), 5 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:10,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:10,153 INFO  L93              Difference]: Finished difference Result 20098 states and 33365 transitions.
[2023-11-29 07:02:10,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:02:10,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 633.6) internal successors, (3168), 5 states have internal predecessors, (3168), 0 states have call successors, (0), 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 3388
[2023-11-29 07:02:10,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:10,167 INFO  L225             Difference]: With dead ends: 20098
[2023-11-29 07:02:10,167 INFO  L226             Difference]: Without dead ends: 15148
[2023-11-29 07:02:10,171 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6774 GetRequests, 6765 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:10,171 INFO  L413           NwaCegarLoop]: 16595 mSDtfsCounter, 15604 mSDsluCounter, 41292 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15604 SdHoareTripleChecker+Valid, 57887 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:10,171 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15604 Valid, 57887 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:02:10,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15148 states.
[2023-11-29 07:02:10,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 5481.
[2023-11-29 07:02:10,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:10,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:02:10,252 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3388
[2023-11-29 07:02:10,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:10,253 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:02:10,254 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 633.6) internal successors, (3168), 5 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:10,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:02:10,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3390
[2023-11-29 07:02:10,298 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:10,299 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:10,339 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0
[2023-11-29 07:02:10,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2023-11-29 07:02:10,499 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:10,500 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:10,500 INFO  L85        PathProgramCache]: Analyzing trace with hash -629310698, now seen corresponding path program 1 times
[2023-11-29 07:02:10,500 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:10,500 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930616682]
[2023-11-29 07:02:10,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:10,501 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:10,772 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:10,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825465494]
[2023-11-29 07:02:10,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:10,773 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:10,773 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:10,774 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:10,775 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-11-29 07:02:14,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:14,197 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15853 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 07:02:14,229 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:14,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 70 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:14,585 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:02:14,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-11-29 07:02:14,656 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:14,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930616682]
[2023-11-29 07:02:14,656 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:14,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825465494]
[2023-11-29 07:02:14,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825465494] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 07:02:14,656 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 07:02:14,659 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-11-29 07:02:14,659 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145318981]
[2023-11-29 07:02:14,659 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:14,661 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 07:02:14,661 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:14,662 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 07:02:14,663 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:14,663 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 5 states, 5 states have (on average 633.4) internal successors, (3167), 5 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:14,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:14,992 INFO  L93              Difference]: Finished difference Result 20095 states and 33360 transitions.
[2023-11-29 07:02:14,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 07:02:14,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 633.4) internal successors, (3167), 5 states have internal predecessors, (3167), 0 states have call successors, (0), 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 3389
[2023-11-29 07:02:14,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:15,006 INFO  L225             Difference]: With dead ends: 20095
[2023-11-29 07:02:15,006 INFO  L226             Difference]: Without dead ends: 15151
[2023-11-29 07:02:15,010 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6776 GetRequests, 6767 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-11-29 07:02:15,011 INFO  L413           NwaCegarLoop]: 16605 mSDtfsCounter, 15607 mSDsluCounter, 41312 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15607 SdHoareTripleChecker+Valid, 57917 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:15,011 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15607 Valid, 57917 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 07:02:15,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15151 states.
[2023-11-29 07:02:15,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 5481.
[2023-11-29 07:02:15,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5481 states, 5480 states have (on average 1.6607664233576642) internal successors, (9101), 5480 states have internal predecessors, (9101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:15,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 9101 transitions.
[2023-11-29 07:02:15,089 INFO  L78                 Accepts]: Start accepts. Automaton has 5481 states and 9101 transitions. Word has length 3389
[2023-11-29 07:02:15,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:15,090 INFO  L495      AbstractCegarLoop]: Abstraction has 5481 states and 9101 transitions.
[2023-11-29 07:02:15,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 633.4) internal successors, (3167), 5 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:15,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 5481 states and 9101 transitions.
[2023-11-29 07:02:15,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:15,135 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:15,136 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:15,178 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0
[2023-11-29 07:02:15,336 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2023-11-29 07:02:15,337 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:15,337 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:15,337 INFO  L85        PathProgramCache]: Analyzing trace with hash 151246134, now seen corresponding path program 1 times
[2023-11-29 07:02:15,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:15,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138209120]
[2023-11-29 07:02:15,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:15,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:15,608 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:15,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768627078]
[2023-11-29 07:02:15,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:15,609 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:15,609 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:15,610 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:15,610 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-11-29 07:02:19,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:19,094 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 07:02:19,131 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:19,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:19,198 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:02:19,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:19,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138209120]
[2023-11-29 07:02:19,198 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:19,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768627078]
[2023-11-29 07:02:19,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [768627078] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:02:19,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:02:19,200 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 07:02:19,200 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496104868]
[2023-11-29 07:02:19,200 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:19,202 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 07:02:19,202 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:19,205 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 07:02:19,205 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 07:02:19,206 INFO  L87              Difference]: Start difference. First operand 5481 states and 9101 transitions. Second operand  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:19,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:19,465 INFO  L93              Difference]: Finished difference Result 15173 states and 25185 transitions.
[2023-11-29 07:02:19,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 07:02:19,466 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390
[2023-11-29 07:02:19,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:19,475 INFO  L225             Difference]: With dead ends: 15173
[2023-11-29 07:02:19,475 INFO  L226             Difference]: Without dead ends: 10326
[2023-11-29 07:02:19,479 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 07:02:19,479 INFO  L413           NwaCegarLoop]: 9059 mSDtfsCounter, 7857 mSDsluCounter, 35266 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 44325 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:19,479 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7857 Valid, 44325 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:02:19,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10326 states.
[2023-11-29 07:02:19,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10326 to 5486.
[2023-11-29 07:02:19,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5486 states, 5485 states have (on average 1.6601640838650866) internal successors, (9106), 5485 states have internal predecessors, (9106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:19,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 9106 transitions.
[2023-11-29 07:02:19,543 INFO  L78                 Accepts]: Start accepts. Automaton has 5486 states and 9106 transitions. Word has length 3390
[2023-11-29 07:02:19,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:19,543 INFO  L495      AbstractCegarLoop]: Abstraction has 5486 states and 9106 transitions.
[2023-11-29 07:02:19,544 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:19,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 5486 states and 9106 transitions.
[2023-11-29 07:02:19,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:19,589 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:19,589 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:19,636 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0
[2023-11-29 07:02:19,790 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76
[2023-11-29 07:02:19,790 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:19,790 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:19,791 INFO  L85        PathProgramCache]: Analyzing trace with hash 49120180, now seen corresponding path program 1 times
[2023-11-29 07:02:19,791 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:19,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109870676]
[2023-11-29 07:02:19,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:19,792 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:20,073 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:20,073 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201159714]
[2023-11-29 07:02:20,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:20,074 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:20,074 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:20,075 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:20,075 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-11-29 07:02:23,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:23,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 07:02:23,624 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:23,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:23,679 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:02:23,680 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:23,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109870676]
[2023-11-29 07:02:23,680 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:23,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201159714]
[2023-11-29 07:02:23,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [201159714] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:02:23,680 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:02:23,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 07:02:23,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651470082]
[2023-11-29 07:02:23,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:23,682 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 07:02:23,682 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:23,684 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 07:02:23,684 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 07:02:23,684 INFO  L87              Difference]: Start difference. First operand 5486 states and 9106 transitions. Second operand  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:23,958 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:23,958 INFO  L93              Difference]: Finished difference Result 15188 states and 25200 transitions.
[2023-11-29 07:02:23,959 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 07:02:23,959 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390
[2023-11-29 07:02:23,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:23,967 INFO  L225             Difference]: With dead ends: 15188
[2023-11-29 07:02:23,967 INFO  L226             Difference]: Without dead ends: 10336
[2023-11-29 07:02:23,970 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 07:02:23,971 INFO  L413           NwaCegarLoop]: 9581 mSDtfsCounter, 7857 mSDsluCounter, 36832 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 46413 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:23,971 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7857 Valid, 46413 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:02:23,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10336 states.
[2023-11-29 07:02:24,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 5491.
[2023-11-29 07:02:24,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5491 states, 5490 states have (on average 1.6595628415300547) internal successors, (9111), 5490 states have internal predecessors, (9111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:24,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 9111 transitions.
[2023-11-29 07:02:24,034 INFO  L78                 Accepts]: Start accepts. Automaton has 5491 states and 9111 transitions. Word has length 3390
[2023-11-29 07:02:24,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:24,034 INFO  L495      AbstractCegarLoop]: Abstraction has 5491 states and 9111 transitions.
[2023-11-29 07:02:24,035 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:24,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 5491 states and 9111 transitions.
[2023-11-29 07:02:24,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:24,080 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:24,081 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:24,127 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-11-29 07:02:24,281 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:24,282 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:24,282 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:24,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 689976626, now seen corresponding path program 1 times
[2023-11-29 07:02:24,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:24,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338686359]
[2023-11-29 07:02:24,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:24,283 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:24,552 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:24,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860523361]
[2023-11-29 07:02:24,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:24,553 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:24,553 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:24,554 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:24,554 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-11-29 07:02:27,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:28,055 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 07:02:28,084 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:28,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:28,146 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:02:28,146 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:28,146 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338686359]
[2023-11-29 07:02:28,146 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:28,146 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860523361]
[2023-11-29 07:02:28,146 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860523361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:02:28,146 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:02:28,147 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 07:02:28,147 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556369281]
[2023-11-29 07:02:28,147 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:28,149 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 07:02:28,149 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:28,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 07:02:28,151 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 07:02:28,151 INFO  L87              Difference]: Start difference. First operand 5491 states and 9111 transitions. Second operand  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:28,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:28,446 INFO  L93              Difference]: Finished difference Result 15204 states and 25216 transitions.
[2023-11-29 07:02:28,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 07:02:28,447 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390
[2023-11-29 07:02:28,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:28,457 INFO  L225             Difference]: With dead ends: 15204
[2023-11-29 07:02:28,457 INFO  L226             Difference]: Without dead ends: 10347
[2023-11-29 07:02:28,460 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 07:02:28,461 INFO  L413           NwaCegarLoop]: 11769 mSDtfsCounter, 7857 mSDsluCounter, 43396 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 55165 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:28,461 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7857 Valid, 55165 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:02:28,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10347 states.
[2023-11-29 07:02:28,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10347 to 5496.
[2023-11-29 07:02:28,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5496 states, 5495 states have (on average 1.6589626933575978) internal successors, (9116), 5495 states have internal predecessors, (9116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:28,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 9116 transitions.
[2023-11-29 07:02:28,524 INFO  L78                 Accepts]: Start accepts. Automaton has 5496 states and 9116 transitions. Word has length 3390
[2023-11-29 07:02:28,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:28,525 INFO  L495      AbstractCegarLoop]: Abstraction has 5496 states and 9116 transitions.
[2023-11-29 07:02:28,525 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:28,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 5496 states and 9116 transitions.
[2023-11-29 07:02:28,570 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:28,570 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:28,571 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:28,616 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0
[2023-11-29 07:02:28,771 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:28,772 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:28,772 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:28,772 INFO  L85        PathProgramCache]: Analyzing trace with hash 1737509936, now seen corresponding path program 1 times
[2023-11-29 07:02:28,772 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:28,773 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227535884]
[2023-11-29 07:02:28,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:28,773 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:29,044 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:29,044 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033045937]
[2023-11-29 07:02:29,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:29,045 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:29,045 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:29,045 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:29,046 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-11-29 07:02:32,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:32,682 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 07:02:32,710 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:32,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:32,770 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:02:32,770 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:32,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227535884]
[2023-11-29 07:02:32,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:32,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033045937]
[2023-11-29 07:02:32,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033045937] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:02:32,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:02:32,771 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 07:02:32,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900332776]
[2023-11-29 07:02:32,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:32,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 07:02:32,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:32,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 07:02:32,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 07:02:32,774 INFO  L87              Difference]: Start difference. First operand 5496 states and 9116 transitions. Second operand  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:33,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:33,058 INFO  L93              Difference]: Finished difference Result 15218 states and 25230 transitions.
[2023-11-29 07:02:33,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 07:02:33,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390
[2023-11-29 07:02:33,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:33,067 INFO  L225             Difference]: With dead ends: 15218
[2023-11-29 07:02:33,067 INFO  L226             Difference]: Without dead ends: 10356
[2023-11-29 07:02:33,070 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 07:02:33,070 INFO  L413           NwaCegarLoop]: 11848 mSDtfsCounter, 7857 mSDsluCounter, 43633 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 55481 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:33,071 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7857 Valid, 55481 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:02:33,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10356 states.
[2023-11-29 07:02:33,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 5501.
[2023-11-29 07:02:33,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5501 states, 5500 states have (on average 1.6583636363636363) internal successors, (9121), 5500 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:33,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 9121 transitions.
[2023-11-29 07:02:33,135 INFO  L78                 Accepts]: Start accepts. Automaton has 5501 states and 9121 transitions. Word has length 3390
[2023-11-29 07:02:33,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:33,136 INFO  L495      AbstractCegarLoop]: Abstraction has 5501 states and 9121 transitions.
[2023-11-29 07:02:33,136 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:33,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 5501 states and 9121 transitions.
[2023-11-29 07:02:33,181 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:33,181 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:33,182 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:33,228 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0
[2023-11-29 07:02:33,382 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2023-11-29 07:02:33,383 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:33,383 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:33,383 INFO  L85        PathProgramCache]: Analyzing trace with hash -1523569618, now seen corresponding path program 1 times
[2023-11-29 07:02:33,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:33,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119994739]
[2023-11-29 07:02:33,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:33,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:33,654 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:33,654 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086049551]
[2023-11-29 07:02:33,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:33,655 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:33,655 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:33,656 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:33,657 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-11-29 07:02:37,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:37,176 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 07:02:37,205 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:37,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:37,271 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 07:02:37,271 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:37,271 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119994739]
[2023-11-29 07:02:37,271 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:37,271 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086049551]
[2023-11-29 07:02:37,271 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086049551] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 07:02:37,271 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 07:02:37,272 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 07:02:37,272 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500491785]
[2023-11-29 07:02:37,272 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 07:02:37,273 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 07:02:37,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:37,275 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 07:02:37,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 07:02:37,275 INFO  L87              Difference]: Start difference. First operand 5501 states and 9121 transitions. Second operand  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:37,578 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:02:37,578 INFO  L93              Difference]: Finished difference Result 15234 states and 25246 transitions.
[2023-11-29 07:02:37,578 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 07:02:37,579 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 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 3390
[2023-11-29 07:02:37,580 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:02:37,588 INFO  L225             Difference]: With dead ends: 15234
[2023-11-29 07:02:37,588 INFO  L226             Difference]: Without dead ends: 10367
[2023-11-29 07:02:37,591 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3392 GetRequests, 3386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-11-29 07:02:37,592 INFO  L413           NwaCegarLoop]: 13454 mSDtfsCounter, 7857 mSDsluCounter, 48451 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 61905 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 07:02:37,592 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7857 Valid, 61905 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 07:02:37,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10367 states.
[2023-11-29 07:02:37,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 5506.
[2023-11-29 07:02:37,650 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5506 states, 5505 states have (on average 1.657765667574932) internal successors, (9126), 5505 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:37,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 9126 transitions.
[2023-11-29 07:02:37,656 INFO  L78                 Accepts]: Start accepts. Automaton has 5506 states and 9126 transitions. Word has length 3390
[2023-11-29 07:02:37,657 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:02:37,657 INFO  L495      AbstractCegarLoop]: Abstraction has 5506 states and 9126 transitions.
[2023-11-29 07:02:37,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 565.0) internal successors, (3390), 6 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:02:37,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 5506 states and 9126 transitions.
[2023-11-29 07:02:37,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2023-11-29 07:02:37,703 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:02:37,704 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:37,750 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0
[2023-11-29 07:02:37,904 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:37,904 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:02:37,905 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:02:37,905 INFO  L85        PathProgramCache]: Analyzing trace with hash 1316123820, now seen corresponding path program 1 times
[2023-11-29 07:02:37,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:02:37,906 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232525847]
[2023-11-29 07:02:37,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:37,907 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:02:38,196 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:02:38,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766901084]
[2023-11-29 07:02:38,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:02:38,197 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:02:38,197 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:02:38,198 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:02:38,199 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-11-29 07:02:41,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:02:41,707 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15857 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 07:02:41,740 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:02:44,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 128 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:44,777 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:02:54,938 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 194 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:02:54,939 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:02:54,939 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232525847]
[2023-11-29 07:02:54,939 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:02:54,939 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766901084]
[2023-11-29 07:02:54,939 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [766901084] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 07:02:54,939 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 07:02:54,941 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20
[2023-11-29 07:02:54,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429576020]
[2023-11-29 07:02:54,941 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 07:02:54,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2023-11-29 07:02:54,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:02:54,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2023-11-29 07:02:54,946 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380
[2023-11-29 07:02:54,947 INFO  L87              Difference]: Start difference. First operand 5506 states and 9126 transitions. Second operand  has 20 states, 20 states have (on average 329.35) internal successors, (6587), 20 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:03:03,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:03:03,590 INFO  L93              Difference]: Finished difference Result 25745 states and 42659 transitions.
[2023-11-29 07:03:03,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2023-11-29 07:03:03,591 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 329.35) internal successors, (6587), 20 states have internal predecessors, (6587), 0 states have call successors, (0), 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 3390
[2023-11-29 07:03:03,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:03:03,604 INFO  L225             Difference]: With dead ends: 25745
[2023-11-29 07:03:03,604 INFO  L226             Difference]: Without dead ends: 20873
[2023-11-29 07:03:03,607 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6800 GetRequests, 6765 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332
[2023-11-29 07:03:03,607 INFO  L413           NwaCegarLoop]: 16203 mSDtfsCounter, 98603 mSDsluCounter, 154374 mSDsCounter, 0 mSdLazyCounter, 8476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98603 SdHoareTripleChecker+Valid, 170577 SdHoareTripleChecker+Invalid, 8478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-11-29 07:03:03,607 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [98603 Valid, 170577 Invalid, 8478 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2 Valid, 8476 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-11-29 07:03:03,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20873 states.
[2023-11-29 07:03:03,730 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20873 to 11138.
[2023-11-29 07:03:03,738 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11138 states, 11137 states have (on average 1.6579868905450301) internal successors, (18465), 11137 states have internal predecessors, (18465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:03:03,750 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 18465 transitions.
[2023-11-29 07:03:03,750 INFO  L78                 Accepts]: Start accepts. Automaton has 11138 states and 18465 transitions. Word has length 3390
[2023-11-29 07:03:03,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:03:03,751 INFO  L495      AbstractCegarLoop]: Abstraction has 11138 states and 18465 transitions.
[2023-11-29 07:03:03,752 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 329.35) internal successors, (6587), 20 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:03:03,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 11138 states and 18465 transitions.
[2023-11-29 07:03:03,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3392
[2023-11-29 07:03:03,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:03:03,801 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-29 07:03:03,847 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0
[2023-11-29 07:03:04,001 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:03:04,002 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:03:04,002 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:03:04,003 INFO  L85        PathProgramCache]: Analyzing trace with hash 947974832, now seen corresponding path program 1 times
[2023-11-29 07:03:04,003 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:03:04,003 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145826344]
[2023-11-29 07:03:04,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:03:04,003 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:03:04,272 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:03:04,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157327908]
[2023-11-29 07:03:04,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:03:04,273 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:03:04,273 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:03:04,274 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:03:04,275 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-11-29 07:03:07,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:03:07,778 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15860 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 07:03:07,811 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:03:11,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 194 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:03:11,804 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:03:16,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 194 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:03:16,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:03:16,555 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145826344]
[2023-11-29 07:03:16,556 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:03:16,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157327908]
[2023-11-29 07:03:16,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [157327908] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 07:03:16,556 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 07:03:16,558 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2023-11-29 07:03:16,558 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148471403]
[2023-11-29 07:03:16,559 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 07:03:16,563 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-29 07:03:16,563 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:03:16,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-29 07:03:16,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240
[2023-11-29 07:03:16,566 INFO  L87              Difference]: Start difference. First operand 11138 states and 18465 transitions. Second operand  has 16 states, 16 states have (on average 401.1875) internal successors, (6419), 16 states have internal predecessors, (6419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:04:06,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 07:04:06,185 INFO  L93              Difference]: Finished difference Result 90769 states and 150433 transitions.
[2023-11-29 07:04:06,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. 
[2023-11-29 07:04:06,187 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 401.1875) internal successors, (6419), 16 states have internal predecessors, (6419), 0 states have call successors, (0), 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 3391
[2023-11-29 07:04:06,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 07:04:06,240 INFO  L225             Difference]: With dead ends: 90769
[2023-11-29 07:04:06,240 INFO  L226             Difference]: Without dead ends: 80643
[2023-11-29 07:04:06,253 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6825 GetRequests, 6778 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352
[2023-11-29 07:04:06,253 INFO  L413           NwaCegarLoop]: 57096 mSDtfsCounter, 52248 mSDsluCounter, 449222 mSDsCounter, 0 mSdLazyCounter, 84269 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52248 SdHoareTripleChecker+Valid, 506318 SdHoareTripleChecker+Invalid, 84272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time
[2023-11-29 07:04:06,253 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [52248 Valid, 506318 Invalid, 84272 Unknown, 0 Unchecked, 1.4s Time], IncrementalHoareTripleChecker [3 Valid, 84269 Invalid, 0 Unknown, 0 Unchecked, 44.2s Time]
[2023-11-29 07:04:06,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80643 states.
[2023-11-29 07:04:06,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80643 to 17163.
[2023-11-29 07:04:06,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17163 states, 17162 states have (on average 1.6580818086470108) internal successors, (28456), 17162 states have internal predecessors, (28456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:04:06,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17163 states to 17163 states and 28456 transitions.
[2023-11-29 07:04:06,665 INFO  L78                 Accepts]: Start accepts. Automaton has 17163 states and 28456 transitions. Word has length 3391
[2023-11-29 07:04:06,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 07:04:06,666 INFO  L495      AbstractCegarLoop]: Abstraction has 17163 states and 28456 transitions.
[2023-11-29 07:04:06,667 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 401.1875) internal successors, (6419), 16 states have internal predecessors, (6419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 07:04:06,667 INFO  L276                IsEmpty]: Start isEmpty. Operand 17163 states and 28456 transitions.
[2023-11-29 07:04:06,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3392
[2023-11-29 07:04:06,771 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 07:04:06,772 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:06,817 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0
[2023-11-29 07:04:06,972 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82
[2023-11-29 07:04:06,972 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 07:04:06,973 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 07:04:06,973 INFO  L85        PathProgramCache]: Analyzing trace with hash -1266408786, now seen corresponding path program 1 times
[2023-11-29 07:04:06,973 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 07:04:06,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710847467]
[2023-11-29 07:04:06,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:04:06,974 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 07:04:07,243 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 07:04:07,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247965302]
[2023-11-29 07:04:07,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 07:04:07,244 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 07:04:07,245 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 07:04:07,245 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 07:04:07,246 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c6de34-4fe0-4a57-9c0a-5e9d87ab9f20/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-11-29 07:04:10,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 07:04:10,712 INFO  L262         TraceCheckSpWp]: Trace formula consists of 15859 conjuncts, 63 conjunts are in the unsatisfiable core
[2023-11-29 07:04:10,748 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 07:04:31,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 98 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:04:31,431 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 07:04:55,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 182 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 07:04:55,755 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 07:04:55,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710847467]
[2023-11-29 07:04:55,755 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 07:04:55,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247965302]
[2023-11-29 07:04:55,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247965302] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 07:04:55,755 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 07:04:55,758 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 40
[2023-11-29 07:04:55,758 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466399328]
[2023-11-29 07:04:55,758 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 07:04:55,761 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2023-11-29 07:04:55,761 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 07:04:55,763 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2023-11-29 07:04:55,764 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560
[2023-11-29 07:04:55,765 INFO  L87              Difference]: Start difference. First operand 17163 states and 28456 transitions. Second operand  has 40 states, 40 states have (on average 165.875) internal successors, (6635), 40 states have internal predecessors, (6635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)