./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/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 7389c4f3914367deb5f0a10d9ccf6b9f5d6655006e844818eec33b541d2888f6
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 00:24:15,314 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 00:24:15,379 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 00:24:15,383 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 00:24:15,384 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 00:24:15,406 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 00:24:15,406 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 00:24:15,407 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 00:24:15,408 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 00:24:15,408 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 00:24:15,409 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 00:24:15,409 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 00:24:15,410 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 00:24:15,410 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 00:24:15,411 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 00:24:15,411 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 00:24:15,412 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 00:24:15,412 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 00:24:15,413 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 00:24:15,413 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 00:24:15,414 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 00:24:15,418 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 00:24:15,419 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 00:24:15,419 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 00:24:15,420 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 00:24:15,420 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 00:24:15,420 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 00:24:15,421 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 00:24:15,421 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:24:15,421 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 00:24:15,422 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 00:24:15,422 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 00:24:15,422 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 00:24:15,423 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 00:24:15,423 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 00:24:15,423 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 00:24:15,423 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 00:24:15,424 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 00:24:15,424 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 00:24:15,424 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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/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 -> 7389c4f3914367deb5f0a10d9ccf6b9f5d6655006e844818eec33b541d2888f6
[2023-11-29 00:24:15,631 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 00:24:15,651 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 00:24:15,653 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 00:24:15,654 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 00:24:15,655 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 00:24:15,656 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c
[2023-11-29 00:24:18,366 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 00:24:18,881 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 00:24:18,882 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c
[2023-11-29 00:24:18,931 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/data/7ba20591a/5e8e1dc63325450db0272143cbdddbbd/FLAGc1797c576
[2023-11-29 00:24:18,945 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/data/7ba20591a/5e8e1dc63325450db0272143cbdddbbd
[2023-11-29 00:24:18,948 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 00:24:18,950 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 00:24:18,951 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 00:24:18,951 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 00:24:18,956 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 00:24:18,957 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:24:18" (1/1) ...
[2023-11-29 00:24:18,958 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207b181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:18, skipping insertion in model container
[2023-11-29 00:24:18,958 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:24:18" (1/1) ...
[2023-11-29 00:24:19,192 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 00:24:19,521 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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c[1180,1193]
[2023-11-29 00:24:20,723 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:24:20,731 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 00:24:20,739 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_73e1ad30-11c2-441c-a9c4-67b11a0a7433/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c[1180,1193]
[2023-11-29 00:24:21,876 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:24:21,891 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 00:24:21,892 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21 WrapperNode
[2023-11-29 00:24:21,892 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 00:24:21,893 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 00:24:21,893 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 00:24:21,893 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 00:24:21,900 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:22,230 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:25,838 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56279
[2023-11-29 00:24:25,839 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 00:24:25,840 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 00:24:25,840 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 00:24:25,840 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 00:24:25,851 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:25,851 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:26,694 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:27,160 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 00:24:27,161 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:27,161 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:28,218 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:28,402 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:28,629 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:28,758 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:29,410 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 00:24:29,411 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 00:24:29,411 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 00:24:29,411 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 00:24:29,412 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (1/1) ...
[2023-11-29 00:24:29,417 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:24:29,428 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:24:29,440 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 00:24:29,442 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 00:24:29,469 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 00:24:29,469 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 00:24:29,469 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 00:24:29,470 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 00:24:31,389 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 00:24:31,391 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 00:24:55,272 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 00:24:55,971 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 00:24:55,971 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 00:24:55,977 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:24:55 BoogieIcfgContainer
[2023-11-29 00:24:55,977 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 00:24:55,980 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 00:24:55,980 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 00:24:55,983 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 00:24:55,984 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:24:18" (1/3) ...
[2023-11-29 00:24:55,984 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab2fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:24:55, skipping insertion in model container
[2023-11-29 00:24:55,984 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:21" (2/3) ...
[2023-11-29 00:24:55,985 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab2fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:24:55, skipping insertion in model container
[2023-11-29 00:24:55,985 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:24:55" (3/3) ...
[2023-11-29 00:24:55,986 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.5.prop2-back-serstep.c
[2023-11-29 00:24:56,005 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 00:24:56,005 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 00:24:56,206 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 00:24:56,212 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;@4ac95eb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 00:24:56,213 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 00:24:56,252 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12145 states, 12143 states have (on average 1.6668862719262125) internal successors, (20241), 12144 states have internal predecessors, (20241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:24:56,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1267
[2023-11-29 00:24:56,339 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:24:56,341 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:24:56,342 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:24:56,347 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:24:56,348 INFO  L85        PathProgramCache]: Analyzing trace with hash 510523978, now seen corresponding path program 1 times
[2023-11-29 00:24:56,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:24:56,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420682664]
[2023-11-29 00:24:56,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:24:56,359 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:24:57,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:02,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:25:02,315 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:25:02,316 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420682664]
[2023-11-29 00:25:02,316 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420682664] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:25:02,317 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:25:02,317 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:25:02,319 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783365673]
[2023-11-29 00:25:02,319 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:25:02,326 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:25:02,327 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:25:02,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:25:02,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:25:02,387 INFO  L87              Difference]: Start difference. First operand  has 12145 states, 12143 states have (on average 1.6668862719262125) internal successors, (20241), 12144 states have internal predecessors, (20241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:02,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:25:02,964 INFO  L93              Difference]: Finished difference Result 23761 states and 39603 transitions.
[2023-11-29 00:25:02,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:25:02,968 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1266
[2023-11-29 00:25:02,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:25:03,039 INFO  L225             Difference]: With dead ends: 23761
[2023-11-29 00:25:03,039 INFO  L226             Difference]: Without dead ends: 12145
[2023-11-29 00:25:03,056 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:25:03,059 INFO  L413           NwaCegarLoop]: 20234 mSDtfsCounter, 1 mSDsluCounter, 40463 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60697 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:25:03,060 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60697 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:25:03,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12145 states.
[2023-11-29 00:25:03,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 12145.
[2023-11-29 00:25:03,319 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12145 states, 12144 states have (on average 1.6665843214756257) internal successors, (20239), 12144 states have internal predecessors, (20239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:03,363 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12145 states to 12145 states and 20239 transitions.
[2023-11-29 00:25:03,364 INFO  L78                 Accepts]: Start accepts. Automaton has 12145 states and 20239 transitions. Word has length 1266
[2023-11-29 00:25:03,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:25:03,367 INFO  L495      AbstractCegarLoop]: Abstraction has 12145 states and 20239 transitions.
[2023-11-29 00:25:03,368 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:03,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 12145 states and 20239 transitions.
[2023-11-29 00:25:03,511 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1268
[2023-11-29 00:25:03,511 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:25:03,512 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:25:03,512 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 00:25:03,512 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:25:03,513 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:25:03,514 INFO  L85        PathProgramCache]: Analyzing trace with hash -1351893346, now seen corresponding path program 1 times
[2023-11-29 00:25:03,514 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:25:03,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287528312]
[2023-11-29 00:25:03,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:03,515 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:25:04,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:06,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:25:06,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:25:06,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287528312]
[2023-11-29 00:25:06,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287528312] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:25:06,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:25:06,680 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:25:06,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935475736]
[2023-11-29 00:25:06,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:25:06,683 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:25:06,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:25:06,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:25:06,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:25:06,686 INFO  L87              Difference]: Start difference. First operand 12145 states and 20239 transitions. Second operand  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:07,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:25:07,472 INFO  L93              Difference]: Finished difference Result 23764 states and 39601 transitions.
[2023-11-29 00:25:07,472 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 00:25:07,473 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1267
[2023-11-29 00:25:07,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:25:07,545 INFO  L225             Difference]: With dead ends: 23764
[2023-11-29 00:25:07,545 INFO  L226             Difference]: Without dead ends: 12148
[2023-11-29 00:25:07,561 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:25:07,563 INFO  L413           NwaCegarLoop]: 20234 mSDtfsCounter, 1 mSDsluCounter, 40461 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:25:07,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60695 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:25:07,591 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12148 states.
[2023-11-29 00:25:07,836 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12148 to 12147.
[2023-11-29 00:25:07,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12147 states, 12146 states have (on average 1.6664745595257697) internal successors, (20241), 12146 states have internal predecessors, (20241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:07,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12147 states to 12147 states and 20241 transitions.
[2023-11-29 00:25:07,898 INFO  L78                 Accepts]: Start accepts. Automaton has 12147 states and 20241 transitions. Word has length 1267
[2023-11-29 00:25:07,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:25:07,901 INFO  L495      AbstractCegarLoop]: Abstraction has 12147 states and 20241 transitions.
[2023-11-29 00:25:07,902 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:07,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 12147 states and 20241 transitions.
[2023-11-29 00:25:07,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1269
[2023-11-29 00:25:07,929 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:25:07,931 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:25:07,931 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 00:25:07,931 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:25:07,932 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:25:07,933 INFO  L85        PathProgramCache]: Analyzing trace with hash -1689405594, now seen corresponding path program 1 times
[2023-11-29 00:25:07,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:25:07,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309685334]
[2023-11-29 00:25:07,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:07,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:25:08,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:10,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:25:10,780 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:25:10,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309685334]
[2023-11-29 00:25:10,781 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309685334] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:25:10,781 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:25:10,782 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:25:10,782 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980043345]
[2023-11-29 00:25:10,782 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:25:10,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 00:25:10,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:25:10,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 00:25:10,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 00:25:10,788 INFO  L87              Difference]: Start difference. First operand 12147 states and 20241 transitions. Second operand  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:11,240 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:25:11,240 INFO  L93              Difference]: Finished difference Result 35377 states and 58952 transitions.
[2023-11-29 00:25:11,241 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 00:25:11,241 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1268
[2023-11-29 00:25:11,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:25:11,278 INFO  L225             Difference]: With dead ends: 35377
[2023-11-29 00:25:11,279 INFO  L226             Difference]: Without dead ends: 23759
[2023-11-29 00:25:11,294 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 00:25:11,295 INFO  L413           NwaCegarLoop]: 22499 mSDtfsCounter, 19347 mSDsluCounter, 42724 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19347 SdHoareTripleChecker+Valid, 65223 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 00:25:11,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19347 Valid, 65223 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:25:11,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23759 states.
[2023-11-29 00:25:11,498 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23759 to 12149.
[2023-11-29 00:25:11,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12149 states, 12148 states have (on average 1.6663648337174843) internal successors, (20243), 12148 states have internal predecessors, (20243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:11,527 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12149 states to 12149 states and 20243 transitions.
[2023-11-29 00:25:11,527 INFO  L78                 Accepts]: Start accepts. Automaton has 12149 states and 20243 transitions. Word has length 1268
[2023-11-29 00:25:11,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:25:11,529 INFO  L495      AbstractCegarLoop]: Abstraction has 12149 states and 20243 transitions.
[2023-11-29 00:25:11,529 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:11,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 12149 states and 20243 transitions.
[2023-11-29 00:25:11,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1270
[2023-11-29 00:25:11,541 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:25:11,542 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:25:11,542 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 00:25:11,542 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:25:11,543 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:25:11,543 INFO  L85        PathProgramCache]: Analyzing trace with hash -942664826, now seen corresponding path program 1 times
[2023-11-29 00:25:11,543 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:25:11,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256364388]
[2023-11-29 00:25:11,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:11,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:25:11,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:14,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:25:14,427 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:25:14,428 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256364388]
[2023-11-29 00:25:14,428 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256364388] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:25:14,428 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:25:14,428 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 00:25:14,429 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522861891]
[2023-11-29 00:25:14,429 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:25:14,431 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:25:14,431 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:25:14,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:25:14,433 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 00:25:14,434 INFO  L87              Difference]: Start difference. First operand 12149 states and 20243 transitions. Second operand  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:15,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:25:15,166 INFO  L93              Difference]: Finished difference Result 36742 states and 61223 transitions.
[2023-11-29 00:25:15,167 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:25:15,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1269
[2023-11-29 00:25:15,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:25:15,214 INFO  L225             Difference]: With dead ends: 36742
[2023-11-29 00:25:15,214 INFO  L226             Difference]: Without dead ends: 25122
[2023-11-29 00:25:15,231 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 00:25:15,232 INFO  L413           NwaCegarLoop]: 22498 mSDtfsCounter, 79286 mSDsluCounter, 40462 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79286 SdHoareTripleChecker+Valid, 62960 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:25:15,232 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79286 Valid, 62960 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 00:25:15,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25122 states.
[2023-11-29 00:25:15,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 13508.
[2023-11-29 00:25:15,559 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13508 states, 13507 states have (on average 1.666395202487599) internal successors, (22508), 13507 states have internal predecessors, (22508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:15,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13508 states to 13508 states and 22508 transitions.
[2023-11-29 00:25:15,588 INFO  L78                 Accepts]: Start accepts. Automaton has 13508 states and 22508 transitions. Word has length 1269
[2023-11-29 00:25:15,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:25:15,591 INFO  L495      AbstractCegarLoop]: Abstraction has 13508 states and 22508 transitions.
[2023-11-29 00:25:15,591 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 253.8) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:25:15,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 13508 states and 22508 transitions.
[2023-11-29 00:25:16,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8999
[2023-11-29 00:25:16,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:25:16,409 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:25:16,410 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 00:25:16,410 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:25:16,410 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:25:16,414 INFO  L85        PathProgramCache]: Analyzing trace with hash -350308461, now seen corresponding path program 1 times
[2023-11-29 00:25:16,414 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:25:16,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925368524]
[2023-11-29 00:25:16,416 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:16,416 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:25:18,028 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:25:18,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676048809]
[2023-11-29 00:25:18,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:25:18,030 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:25:18,030 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:25:18,033 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:25:18,035 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 00:25:29,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:25:30,158 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45327 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:25:30,379 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:25:31,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 8 proven. 675 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked.
[2023-11-29 00:25:31,762 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:25:32,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked.
[2023-11-29 00:25:32,047 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:25:32,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925368524]
[2023-11-29 00:25:32,047 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:25:32,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676048809]
[2023-11-29 00:25:32,047 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676048809] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:25:32,048 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:25:32,054 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 00:25:32,054 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675265532]
[2023-11-29 00:25:32,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:25:32,061 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:25:32,061 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:25:32,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:25:32,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 00:25:32,069 INFO  L87              Difference]: Start difference. First operand 13508 states and 22508 transitions. Second operand  has 6 states, 6 states have (on average 1349.1666666666667) internal successors, (8095), 6 states have internal predecessors, (8095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:03,352 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:26:03,352 INFO  L93              Difference]: Finished difference Result 58760 states and 97506 transitions.
[2023-11-29 00:26:03,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 00:26:03,354 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1349.1666666666667) internal successors, (8095), 6 states have internal predecessors, (8095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8998
[2023-11-29 00:26:03,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:26:03,400 INFO  L225             Difference]: With dead ends: 58760
[2023-11-29 00:26:03,400 INFO  L226             Difference]: Without dead ends: 36740
[2023-11-29 00:26:03,418 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17996 GetRequests, 17984 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 00:26:03,419 INFO  L413           NwaCegarLoop]: 32111 mSDtfsCounter, 54392 mSDsluCounter, 108834 mSDsCounter, 0 mSdLazyCounter, 46689 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54392 SdHoareTripleChecker+Valid, 140945 SdHoareTripleChecker+Invalid, 47907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 46689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time
[2023-11-29 00:26:03,419 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [54392 Valid, 140945 Invalid, 47907 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1218 Valid, 46689 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time]
[2023-11-29 00:26:03,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36740 states.
[2023-11-29 00:26:03,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36740 to 13510.
[2023-11-29 00:26:03,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13510 states, 13509 states have (on average 1.666296543045377) internal successors, (22510), 13509 states have internal predecessors, (22510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:03,650 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13510 states to 13510 states and 22510 transitions.
[2023-11-29 00:26:03,650 INFO  L78                 Accepts]: Start accepts. Automaton has 13510 states and 22510 transitions. Word has length 8998
[2023-11-29 00:26:03,657 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:26:03,657 INFO  L495      AbstractCegarLoop]: Abstraction has 13510 states and 22510 transitions.
[2023-11-29 00:26:03,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1349.1666666666667) internal successors, (8095), 6 states have internal predecessors, (8095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:03,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 13510 states and 22510 transitions.
[2023-11-29 00:26:04,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9000
[2023-11-29 00:26:04,081 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:26:04,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:26:04,206 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 00:26:04,287 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:26:04,288 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:26:04,288 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:26:04,293 INFO  L85        PathProgramCache]: Analyzing trace with hash 1826544019, now seen corresponding path program 1 times
[2023-11-29 00:26:04,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:26:04,294 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974635087]
[2023-11-29 00:26:04,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:26:04,295 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:26:05,337 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:26:05,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168110964]
[2023-11-29 00:26:05,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:26:05,339 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:26:05,339 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:26:05,340 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:26:05,341 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 00:26:17,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:26:17,410 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45330 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:26:17,568 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:26:18,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 10 proven. 675 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked.
[2023-11-29 00:26:18,802 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:26:18,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked.
[2023-11-29 00:26:18,977 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:26:18,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974635087]
[2023-11-29 00:26:18,977 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:26:18,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168110964]
[2023-11-29 00:26:18,977 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168110964] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:26:18,977 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:26:18,984 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:26:18,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470466391]
[2023-11-29 00:26:18,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:26:18,993 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:26:18,993 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:26:19,002 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:26:19,002 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:26:19,004 INFO  L87              Difference]: Start difference. First operand 13510 states and 22510 transitions. Second operand  has 5 states, 5 states have (on average 1619.6) internal successors, (8098), 5 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:34,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:26:34,125 INFO  L93              Difference]: Finished difference Result 47149 states and 78155 transitions.
[2023-11-29 00:26:34,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:26:34,127 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1619.6) internal successors, (8098), 5 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8999
[2023-11-29 00:26:34,135 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:26:34,161 INFO  L225             Difference]: With dead ends: 47149
[2023-11-29 00:26:34,162 INFO  L226             Difference]: Without dead ends: 25122
[2023-11-29 00:26:34,171 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17997 GetRequests, 17988 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 00:26:34,172 INFO  L413           NwaCegarLoop]: 32101 mSDtfsCounter, 50731 mSDsluCounter, 31879 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50731 SdHoareTripleChecker+Valid, 63980 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time
[2023-11-29 00:26:34,173 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50731 Valid, 63980 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time]
[2023-11-29 00:26:34,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25122 states.
[2023-11-29 00:26:34,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 13512.
[2023-11-29 00:26:34,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13512 states, 13511 states have (on average 1.666197912811783) internal successors, (22512), 13511 states have internal predecessors, (22512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:34,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13512 states to 13512 states and 22512 transitions.
[2023-11-29 00:26:34,384 INFO  L78                 Accepts]: Start accepts. Automaton has 13512 states and 22512 transitions. Word has length 8999
[2023-11-29 00:26:34,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:26:34,391 INFO  L495      AbstractCegarLoop]: Abstraction has 13512 states and 22512 transitions.
[2023-11-29 00:26:34,393 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1619.6) internal successors, (8098), 5 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:26:34,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 13512 states and 22512 transitions.
[2023-11-29 00:26:34,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9001
[2023-11-29 00:26:34,790 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:26:34,794 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:26:34,916 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-29 00:26:34,994 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:26:34,995 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:26:34,995 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:26:34,998 INFO  L85        PathProgramCache]: Analyzing trace with hash 328284345, now seen corresponding path program 1 times
[2023-11-29 00:26:34,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:26:34,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533339332]
[2023-11-29 00:26:34,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:26:34,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:26:35,885 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:26:35,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965863730]
[2023-11-29 00:26:35,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:26:35,887 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:26:35,887 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:26:35,888 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:26:35,888 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 00:26:48,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:26:48,777 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45333 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:26:48,926 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:26:50,233 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 12 proven. 675 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked.
[2023-11-29 00:26:50,233 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:26:50,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked.
[2023-11-29 00:26:50,404 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:26:50,404 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533339332]
[2023-11-29 00:26:50,404 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:26:50,404 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965863730]
[2023-11-29 00:26:50,404 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965863730] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:26:50,404 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:26:50,411 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:26:50,412 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284510885]
[2023-11-29 00:26:50,412 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:26:50,419 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:26:50,419 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:26:50,425 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:26:50,425 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:26:50,427 INFO  L87              Difference]: Start difference. First operand 13512 states and 22512 transitions. Second operand  has 5 states, 5 states have (on average 1620.2) internal successors, (8101), 5 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:08,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:27:08,778 INFO  L93              Difference]: Finished difference Result 47157 states and 78163 transitions.
[2023-11-29 00:27:08,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:27:08,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1620.2) internal successors, (8101), 5 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9000
[2023-11-29 00:27:08,788 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:27:08,832 INFO  L225             Difference]: With dead ends: 47157
[2023-11-29 00:27:08,833 INFO  L226             Difference]: Without dead ends: 25123
[2023-11-29 00:27:08,848 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17999 GetRequests, 17990 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 00:27:08,849 INFO  L413           NwaCegarLoop]: 32093 mSDtfsCounter, 35029 mSDsluCounter, 48617 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35029 SdHoareTripleChecker+Valid, 80710 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time
[2023-11-29 00:27:08,850 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35029 Valid, 80710 Invalid, 23898 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time]
[2023-11-29 00:27:08,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25123 states.
[2023-11-29 00:27:09,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25123 to 13514.
[2023-11-29 00:27:09,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13514 states, 13513 states have (on average 1.6660993117738474) internal successors, (22514), 13513 states have internal predecessors, (22514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:09,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 22514 transitions.
[2023-11-29 00:27:09,154 INFO  L78                 Accepts]: Start accepts. Automaton has 13514 states and 22514 transitions. Word has length 9000
[2023-11-29 00:27:09,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:27:09,163 INFO  L495      AbstractCegarLoop]: Abstraction has 13514 states and 22514 transitions.
[2023-11-29 00:27:09,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1620.2) internal successors, (8101), 5 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:09,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 13514 states and 22514 transitions.
[2023-11-29 00:27:09,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9002
[2023-11-29 00:27:09,669 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:27:09,674 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:27:09,811 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 00:27:09,875 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-29 00:27:09,875 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:27:09,876 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:27:09,880 INFO  L85        PathProgramCache]: Analyzing trace with hash 216983279, now seen corresponding path program 1 times
[2023-11-29 00:27:09,880 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:27:09,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929320628]
[2023-11-29 00:27:09,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:27:09,881 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:27:10,942 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:27:10,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907991755]
[2023-11-29 00:27:10,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:27:10,944 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:27:10,945 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:27:10,945 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:27:10,947 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 00:27:24,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:27:24,753 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45337 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:27:24,907 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:27:26,068 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 675 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked.
[2023-11-29 00:27:26,069 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:27:26,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked.
[2023-11-29 00:27:26,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:27:26,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929320628]
[2023-11-29 00:27:26,234 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:27:26,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907991755]
[2023-11-29 00:27:26,234 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907991755] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:27:26,234 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:27:26,239 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:27:26,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062105395]
[2023-11-29 00:27:26,239 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:27:26,246 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:27:26,246 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:27:26,252 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:27:26,252 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:27:26,254 INFO  L87              Difference]: Start difference. First operand 13514 states and 22514 transitions. Second operand  has 5 states, 5 states have (on average 1620.8) internal successors, (8104), 5 states have internal predecessors, (8104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:43,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:27:43,920 INFO  L93              Difference]: Finished difference Result 47165 states and 78171 transitions.
[2023-11-29 00:27:43,920 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:27:43,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1620.8) internal successors, (8104), 5 states have internal predecessors, (8104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9001
[2023-11-29 00:27:43,928 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:27:43,944 INFO  L225             Difference]: With dead ends: 47165
[2023-11-29 00:27:43,944 INFO  L226             Difference]: Without dead ends: 25124
[2023-11-29 00:27:43,950 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18001 GetRequests, 17992 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 00:27:43,951 INFO  L413           NwaCegarLoop]: 32085 mSDtfsCounter, 35023 mSDsluCounter, 48607 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35023 SdHoareTripleChecker+Valid, 80692 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time
[2023-11-29 00:27:43,951 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35023 Valid, 80692 Invalid, 23898 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time]
[2023-11-29 00:27:43,971 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25124 states.
[2023-11-29 00:27:44,105 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25124 to 13516.
[2023-11-29 00:27:44,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13516 states, 13515 states have (on average 1.666000739918609) internal successors, (22516), 13515 states have internal predecessors, (22516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:44,140 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 22516 transitions.
[2023-11-29 00:27:44,140 INFO  L78                 Accepts]: Start accepts. Automaton has 13516 states and 22516 transitions. Word has length 9001
[2023-11-29 00:27:44,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:27:44,146 INFO  L495      AbstractCegarLoop]: Abstraction has 13516 states and 22516 transitions.
[2023-11-29 00:27:44,148 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1620.8) internal successors, (8104), 5 states have internal predecessors, (8104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:27:44,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 13516 states and 22516 transitions.
[2023-11-29 00:27:44,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9003
[2023-11-29 00:27:44,484 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:27:44,488 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:27:44,619 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 00:27:44,689 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:27:44,689 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:27:44,690 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:27:44,693 INFO  L85        PathProgramCache]: Analyzing trace with hash 623484769, now seen corresponding path program 1 times
[2023-11-29 00:27:44,693 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:27:44,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270621361]
[2023-11-29 00:27:44,695 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:27:44,695 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:27:45,657 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:27:45,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980222787]
[2023-11-29 00:27:45,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:27:45,658 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:27:45,659 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:27:45,659 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:27:45,660 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 00:27:58,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:27:58,796 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45340 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:27:58,916 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:28:00,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 675 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked.
[2023-11-29 00:28:00,079 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:28:00,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked.
[2023-11-29 00:28:00,279 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:28:00,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270621361]
[2023-11-29 00:28:00,280 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:28:00,280 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980222787]
[2023-11-29 00:28:00,280 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [980222787] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:28:00,280 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:28:00,286 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:28:00,286 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065081426]
[2023-11-29 00:28:00,287 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:28:00,293 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:28:00,293 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:28:00,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:28:00,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:28:00,301 INFO  L87              Difference]: Start difference. First operand 13516 states and 22516 transitions. Second operand  has 5 states, 5 states have (on average 1621.4) internal successors, (8107), 5 states have internal predecessors, (8107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:17,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:28:17,480 INFO  L93              Difference]: Finished difference Result 47173 states and 78179 transitions.
[2023-11-29 00:28:17,480 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:28:17,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1621.4) internal successors, (8107), 5 states have internal predecessors, (8107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9002
[2023-11-29 00:28:17,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:28:17,509 INFO  L225             Difference]: With dead ends: 47173
[2023-11-29 00:28:17,509 INFO  L226             Difference]: Without dead ends: 25125
[2023-11-29 00:28:17,523 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18003 GetRequests, 17994 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 00:28:17,524 INFO  L413           NwaCegarLoop]: 32077 mSDtfsCounter, 35023 mSDsluCounter, 46329 mSDsCounter, 0 mSdLazyCounter, 21806 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35023 SdHoareTripleChecker+Valid, 78406 SdHoareTripleChecker+Invalid, 23022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 21806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time
[2023-11-29 00:28:17,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35023 Valid, 78406 Invalid, 23022 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 21806 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time]
[2023-11-29 00:28:17,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25125 states.
[2023-11-29 00:28:17,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 13518.
[2023-11-29 00:28:17,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13518 states, 13517 states have (on average 1.6659021972331138) internal successors, (22518), 13517 states have internal predecessors, (22518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:17,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13518 states to 13518 states and 22518 transitions.
[2023-11-29 00:28:17,713 INFO  L78                 Accepts]: Start accepts. Automaton has 13518 states and 22518 transitions. Word has length 9002
[2023-11-29 00:28:17,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:28:17,718 INFO  L495      AbstractCegarLoop]: Abstraction has 13518 states and 22518 transitions.
[2023-11-29 00:28:17,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1621.4) internal successors, (8107), 5 states have internal predecessors, (8107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:17,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 13518 states and 22518 transitions.
[2023-11-29 00:28:18,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9004
[2023-11-29 00:28:18,081 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:28:18,084 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:28:18,206 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 00:28:18,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:28:18,285 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:28:18,286 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:28:18,289 INFO  L85        PathProgramCache]: Analyzing trace with hash -1472749879, now seen corresponding path program 1 times
[2023-11-29 00:28:18,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:28:18,289 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550778202]
[2023-11-29 00:28:18,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:28:18,290 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:28:19,127 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:28:19,128 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801018349]
[2023-11-29 00:28:19,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:28:19,129 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:28:19,129 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:28:19,130 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:28:19,132 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 00:28:31,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:28:31,504 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45343 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:28:31,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:28:32,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 18 proven. 675 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked.
[2023-11-29 00:28:32,657 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:28:33,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked.
[2023-11-29 00:28:33,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:28:33,041 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550778202]
[2023-11-29 00:28:33,041 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:28:33,041 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801018349]
[2023-11-29 00:28:33,041 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801018349] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:28:33,041 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:28:33,046 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:28:33,046 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597424700]
[2023-11-29 00:28:33,046 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:28:33,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:28:33,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:28:33,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:28:33,062 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:28:33,064 INFO  L87              Difference]: Start difference. First operand 13518 states and 22518 transitions. Second operand  has 5 states, 5 states have (on average 1622.0) internal successors, (8110), 5 states have internal predecessors, (8110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:49,807 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:28:49,807 INFO  L93              Difference]: Finished difference Result 47181 states and 78187 transitions.
[2023-11-29 00:28:49,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:28:49,808 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1622.0) internal successors, (8110), 5 states have internal predecessors, (8110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9003
[2023-11-29 00:28:49,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:28:49,829 INFO  L225             Difference]: With dead ends: 47181
[2023-11-29 00:28:49,829 INFO  L226             Difference]: Without dead ends: 25126
[2023-11-29 00:28:49,836 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18005 GetRequests, 17996 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 00:28:49,837 INFO  L413           NwaCegarLoop]: 32069 mSDtfsCounter, 35018 mSDsluCounter, 46321 mSDsCounter, 0 mSdLazyCounter, 21806 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35018 SdHoareTripleChecker+Valid, 78390 SdHoareTripleChecker+Invalid, 23022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 21806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time
[2023-11-29 00:28:49,837 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35018 Valid, 78390 Invalid, 23022 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 21806 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time]
[2023-11-29 00:28:49,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25126 states.
[2023-11-29 00:28:49,969 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25126 to 13520.
[2023-11-29 00:28:49,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13520 states, 13519 states have (on average 1.6658036837044161) internal successors, (22520), 13519 states have internal predecessors, (22520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:49,997 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 22520 transitions.
[2023-11-29 00:28:49,997 INFO  L78                 Accepts]: Start accepts. Automaton has 13520 states and 22520 transitions. Word has length 9003
[2023-11-29 00:28:50,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:28:50,002 INFO  L495      AbstractCegarLoop]: Abstraction has 13520 states and 22520 transitions.
[2023-11-29 00:28:50,003 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1622.0) internal successors, (8110), 5 states have internal predecessors, (8110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:28:50,003 INFO  L276                IsEmpty]: Start isEmpty. Operand 13520 states and 22520 transitions.
[2023-11-29 00:28:50,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9005
[2023-11-29 00:28:50,326 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:28:50,329 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:28:50,448 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 00:28:50,530 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 00:28:50,530 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:28:50,530 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:28:50,532 INFO  L85        PathProgramCache]: Analyzing trace with hash -294566777, now seen corresponding path program 1 times
[2023-11-29 00:28:50,533 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:28:50,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180916604]
[2023-11-29 00:28:50,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:28:50,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:28:51,398 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:28:51,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634133464]
[2023-11-29 00:28:51,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:28:51,400 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:28:51,400 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:28:51,401 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:28:51,401 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 00:29:03,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:29:03,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45346 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:29:04,102 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:29:05,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 675 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked.
[2023-11-29 00:29:05,131 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:29:05,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked.
[2023-11-29 00:29:05,550 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:29:05,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180916604]
[2023-11-29 00:29:05,550 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:29:05,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634133464]
[2023-11-29 00:29:05,550 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634133464] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:29:05,550 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:29:05,555 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:29:05,555 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617837083]
[2023-11-29 00:29:05,555 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:29:05,561 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:29:05,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:29:05,566 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:29:05,566 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:29:05,568 INFO  L87              Difference]: Start difference. First operand 13520 states and 22520 transitions. Second operand  has 5 states, 5 states have (on average 1622.6) internal successors, (8113), 5 states have internal predecessors, (8113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:22,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:29:22,558 INFO  L93              Difference]: Finished difference Result 47189 states and 78195 transitions.
[2023-11-29 00:29:22,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:29:22,560 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1622.6) internal successors, (8113), 5 states have internal predecessors, (8113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9004
[2023-11-29 00:29:22,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:29:22,580 INFO  L225             Difference]: With dead ends: 47189
[2023-11-29 00:29:22,580 INFO  L226             Difference]: Without dead ends: 25127
[2023-11-29 00:29:22,585 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18007 GetRequests, 17998 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 00:29:22,586 INFO  L413           NwaCegarLoop]: 32061 mSDtfsCounter, 35005 mSDsluCounter, 48577 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35005 SdHoareTripleChecker+Valid, 80638 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time
[2023-11-29 00:29:22,586 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35005 Valid, 80638 Invalid, 23898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time]
[2023-11-29 00:29:22,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25127 states.
[2023-11-29 00:29:22,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25127 to 13522.
[2023-11-29 00:29:22,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13522 states, 13521 states have (on average 1.665705199319577) internal successors, (22522), 13521 states have internal predecessors, (22522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:22,782 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13522 states to 13522 states and 22522 transitions.
[2023-11-29 00:29:22,782 INFO  L78                 Accepts]: Start accepts. Automaton has 13522 states and 22522 transitions. Word has length 9004
[2023-11-29 00:29:22,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:29:22,787 INFO  L495      AbstractCegarLoop]: Abstraction has 13522 states and 22522 transitions.
[2023-11-29 00:29:22,788 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1622.6) internal successors, (8113), 5 states have internal predecessors, (8113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:22,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 13522 states and 22522 transitions.
[2023-11-29 00:29:23,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9006
[2023-11-29 00:29:23,168 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:29:23,170 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:29:23,289 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 00:29:23,371 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:29:23,371 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:29:23,371 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:29:23,373 INFO  L85        PathProgramCache]: Analyzing trace with hash -2079558363, now seen corresponding path program 1 times
[2023-11-29 00:29:23,373 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:29:23,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602676926]
[2023-11-29 00:29:23,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:29:23,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:29:24,215 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:29:24,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600182485]
[2023-11-29 00:29:24,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:29:24,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:29:24,217 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:29:24,218 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:29:24,218 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 00:29:36,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:29:36,372 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45350 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:29:36,481 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:29:37,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 675 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked.
[2023-11-29 00:29:37,461 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:29:37,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked.
[2023-11-29 00:29:37,624 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:29:37,624 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602676926]
[2023-11-29 00:29:37,624 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:29:37,624 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600182485]
[2023-11-29 00:29:37,624 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600182485] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:29:37,624 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:29:37,631 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:29:37,631 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201724754]
[2023-11-29 00:29:37,631 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:29:37,637 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:29:37,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:29:37,643 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:29:37,643 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:29:37,646 INFO  L87              Difference]: Start difference. First operand 13522 states and 22522 transitions. Second operand  has 5 states, 5 states have (on average 1623.2) internal successors, (8116), 5 states have internal predecessors, (8116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:54,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:29:54,674 INFO  L93              Difference]: Finished difference Result 47197 states and 78203 transitions.
[2023-11-29 00:29:54,674 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:29:54,675 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1623.2) internal successors, (8116), 5 states have internal predecessors, (8116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9005
[2023-11-29 00:29:54,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:29:54,703 INFO  L225             Difference]: With dead ends: 47197
[2023-11-29 00:29:54,703 INFO  L226             Difference]: Without dead ends: 25128
[2023-11-29 00:29:54,716 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18009 GetRequests, 18000 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 00:29:54,716 INFO  L413           NwaCegarLoop]: 32053 mSDtfsCounter, 34999 mSDsluCounter, 48567 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34999 SdHoareTripleChecker+Valid, 80620 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:29:54,717 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34999 Valid, 80620 Invalid, 23898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time]
[2023-11-29 00:29:54,742 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25128 states.
[2023-11-29 00:29:54,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25128 to 13524.
[2023-11-29 00:29:54,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13524 states, 13523 states have (on average 1.665606744065666) internal successors, (22524), 13523 states have internal predecessors, (22524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:54,922 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 22524 transitions.
[2023-11-29 00:29:54,922 INFO  L78                 Accepts]: Start accepts. Automaton has 13524 states and 22524 transitions. Word has length 9005
[2023-11-29 00:29:54,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:29:54,927 INFO  L495      AbstractCegarLoop]: Abstraction has 13524 states and 22524 transitions.
[2023-11-29 00:29:54,929 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1623.2) internal successors, (8116), 5 states have internal predecessors, (8116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:29:54,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 13524 states and 22524 transitions.
[2023-11-29 00:29:55,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9007
[2023-11-29 00:29:55,297 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:29:55,299 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:29:55,425 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 00:29:55,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:29:55,500 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:29:55,501 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:29:55,503 INFO  L85        PathProgramCache]: Analyzing trace with hash 1283546159, now seen corresponding path program 1 times
[2023-11-29 00:29:55,503 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:29:55,503 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103486217]
[2023-11-29 00:29:55,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:29:55,504 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:29:56,372 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:29:56,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501058403]
[2023-11-29 00:29:56,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:29:56,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:29:56,374 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:29:56,375 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:29:56,376 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 00:30:08,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:30:08,613 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45353 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:30:08,724 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:30:09,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 24 proven. 675 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked.
[2023-11-29 00:30:09,902 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:30:10,074 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked.
[2023-11-29 00:30:10,074 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:30:10,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103486217]
[2023-11-29 00:30:10,074 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:30:10,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501058403]
[2023-11-29 00:30:10,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [501058403] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:30:10,074 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:30:10,079 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:30:10,079 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323188202]
[2023-11-29 00:30:10,079 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:30:10,083 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:30:10,083 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:30:10,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:30:10,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:30:10,090 INFO  L87              Difference]: Start difference. First operand 13524 states and 22524 transitions. Second operand  has 5 states, 5 states have (on average 1623.8) internal successors, (8119), 5 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:25,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:30:25,021 INFO  L93              Difference]: Finished difference Result 47205 states and 78211 transitions.
[2023-11-29 00:30:25,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:30:25,023 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1623.8) internal successors, (8119), 5 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9006
[2023-11-29 00:30:25,029 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:30:25,049 INFO  L225             Difference]: With dead ends: 47205
[2023-11-29 00:30:25,049 INFO  L226             Difference]: Without dead ends: 25129
[2023-11-29 00:30:25,062 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18011 GetRequests, 18002 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 00:30:25,062 INFO  L413           NwaCegarLoop]: 32045 mSDtfsCounter, 50665 mSDsluCounter, 31845 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50665 SdHoareTripleChecker+Valid, 63890 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:30:25,063 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50665 Valid, 63890 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time]
[2023-11-29 00:30:25,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25129 states.
[2023-11-29 00:30:25,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25129 to 13526.
[2023-11-29 00:30:25,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13526 states, 13525 states have (on average 1.6655083179297596) internal successors, (22526), 13525 states have internal predecessors, (22526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:25,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13526 states to 13526 states and 22526 transitions.
[2023-11-29 00:30:25,252 INFO  L78                 Accepts]: Start accepts. Automaton has 13526 states and 22526 transitions. Word has length 9006
[2023-11-29 00:30:25,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:30:25,257 INFO  L495      AbstractCegarLoop]: Abstraction has 13526 states and 22526 transitions.
[2023-11-29 00:30:25,258 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1623.8) internal successors, (8119), 5 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:25,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 13526 states and 22526 transitions.
[2023-11-29 00:30:25,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9008
[2023-11-29 00:30:25,734 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:30:25,735 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:30:25,859 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 00:30:25,936 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 00:30:25,936 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:30:25,938 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:30:25,939 INFO  L85        PathProgramCache]: Analyzing trace with hash -1086887681, now seen corresponding path program 1 times
[2023-11-29 00:30:25,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:30:25,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087722826]
[2023-11-29 00:30:25,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:30:25,941 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:30:26,898 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:30:26,898 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135084947]
[2023-11-29 00:30:26,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:30:26,900 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:30:26,900 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:30:26,901 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:30:26,902 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 00:30:38,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:30:39,066 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45356 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:30:39,165 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:30:40,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 26 proven. 675 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked.
[2023-11-29 00:30:40,203 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:30:40,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked.
[2023-11-29 00:30:40,365 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:30:40,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087722826]
[2023-11-29 00:30:40,365 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:30:40,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135084947]
[2023-11-29 00:30:40,365 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135084947] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:30:40,365 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:30:40,372 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:30:40,372 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537460453]
[2023-11-29 00:30:40,372 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:30:40,376 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:30:40,376 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:30:40,380 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:30:40,380 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:30:40,382 INFO  L87              Difference]: Start difference. First operand 13526 states and 22526 transitions. Second operand  has 5 states, 5 states have (on average 1624.4) internal successors, (8122), 5 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:57,522 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:30:57,523 INFO  L93              Difference]: Finished difference Result 47213 states and 78219 transitions.
[2023-11-29 00:30:57,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:30:57,524 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1624.4) internal successors, (8122), 5 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9007
[2023-11-29 00:30:57,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:30:57,549 INFO  L225             Difference]: With dead ends: 47213
[2023-11-29 00:30:57,550 INFO  L226             Difference]: Without dead ends: 25130
[2023-11-29 00:30:57,562 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18013 GetRequests, 18004 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 00:30:57,563 INFO  L413           NwaCegarLoop]: 32037 mSDtfsCounter, 34987 mSDsluCounter, 48547 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34987 SdHoareTripleChecker+Valid, 80584 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:30:57,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34987 Valid, 80584 Invalid, 23898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time]
[2023-11-29 00:30:57,586 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25130 states.
[2023-11-29 00:30:57,713 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25130 to 13528.
[2023-11-29 00:30:57,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13528 states, 13527 states have (on average 1.6654099208989428) internal successors, (22528), 13527 states have internal predecessors, (22528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:57,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13528 states to 13528 states and 22528 transitions.
[2023-11-29 00:30:57,741 INFO  L78                 Accepts]: Start accepts. Automaton has 13528 states and 22528 transitions. Word has length 9007
[2023-11-29 00:30:57,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:30:57,745 INFO  L495      AbstractCegarLoop]: Abstraction has 13528 states and 22528 transitions.
[2023-11-29 00:30:57,747 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1624.4) internal successors, (8122), 5 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:30:57,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 13528 states and 22528 transitions.
[2023-11-29 00:30:58,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9009
[2023-11-29 00:30:58,069 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:30:58,072 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:30:58,190 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-11-29 00:30:58,272 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 00:30:58,273 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:30:58,273 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:30:58,275 INFO  L85        PathProgramCache]: Analyzing trace with hash -1939233451, now seen corresponding path program 1 times
[2023-11-29 00:30:58,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:30:58,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931507003]
[2023-11-29 00:30:58,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:30:58,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:30:59,196 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:30:59,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299579152]
[2023-11-29 00:30:59,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:30:59,199 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:30:59,199 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:30:59,200 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:30:59,201 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 00:31:11,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:31:11,574 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45359 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:31:11,692 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:31:12,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 28 proven. 675 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked.
[2023-11-29 00:31:12,682 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:31:12,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked.
[2023-11-29 00:31:12,849 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:31:12,849 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931507003]
[2023-11-29 00:31:12,849 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:31:12,849 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299579152]
[2023-11-29 00:31:12,850 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299579152] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:31:12,850 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:31:12,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:31:12,854 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829466362]
[2023-11-29 00:31:12,854 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:31:12,859 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:31:12,859 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:31:12,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:31:12,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:31:12,867 INFO  L87              Difference]: Start difference. First operand 13528 states and 22528 transitions. Second operand  has 5 states, 5 states have (on average 1625.0) internal successors, (8125), 5 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:31:27,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:31:27,803 INFO  L93              Difference]: Finished difference Result 47221 states and 78227 transitions.
[2023-11-29 00:31:27,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:31:27,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1625.0) internal successors, (8125), 5 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9008
[2023-11-29 00:31:27,811 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:31:27,832 INFO  L225             Difference]: With dead ends: 47221
[2023-11-29 00:31:27,832 INFO  L226             Difference]: Without dead ends: 25131
[2023-11-29 00:31:27,845 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18015 GetRequests, 18006 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 00:31:27,846 INFO  L413           NwaCegarLoop]: 32029 mSDtfsCounter, 50659 mSDsluCounter, 31834 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50659 SdHoareTripleChecker+Valid, 63863 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:31:27,846 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50659 Valid, 63863 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time]
[2023-11-29 00:31:27,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25131 states.
[2023-11-29 00:31:28,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 13530.
[2023-11-29 00:31:28,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13530 states, 13529 states have (on average 1.6653115529603075) internal successors, (22530), 13529 states have internal predecessors, (22530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:31:28,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 22530 transitions.
[2023-11-29 00:31:28,045 INFO  L78                 Accepts]: Start accepts. Automaton has 13530 states and 22530 transitions. Word has length 9008
[2023-11-29 00:31:28,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:31:28,050 INFO  L495      AbstractCegarLoop]: Abstraction has 13530 states and 22530 transitions.
[2023-11-29 00:31:28,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1625.0) internal successors, (8125), 5 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:31:28,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 13530 states and 22530 transitions.
[2023-11-29 00:31:28,427 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9010
[2023-11-29 00:31:28,427 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:31:28,429 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:31:28,564 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 00:31:28,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 00:31:28,630 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:31:28,631 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:31:28,634 INFO  L85        PathProgramCache]: Analyzing trace with hash 1018824795, now seen corresponding path program 1 times
[2023-11-29 00:31:28,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:31:28,634 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678283811]
[2023-11-29 00:31:28,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:31:28,635 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:31:29,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:31:29,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266772106]
[2023-11-29 00:31:29,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:31:29,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:31:29,607 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:31:29,608 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:31:29,609 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 00:31:41,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:31:42,121 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45363 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:31:42,253 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:31:43,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 30 proven. 675 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked.
[2023-11-29 00:31:43,261 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:31:43,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked.
[2023-11-29 00:31:43,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:31:43,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678283811]
[2023-11-29 00:31:43,437 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:31:43,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266772106]
[2023-11-29 00:31:43,437 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [266772106] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:31:43,437 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:31:43,442 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:31:43,442 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740794833]
[2023-11-29 00:31:43,442 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:31:43,447 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:31:43,447 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:31:43,451 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:31:43,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:31:43,453 INFO  L87              Difference]: Start difference. First operand 13530 states and 22530 transitions. Second operand  has 5 states, 5 states have (on average 1625.6) internal successors, (8128), 5 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 00:31:58,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:31:58,810 INFO  L93              Difference]: Finished difference Result 47229 states and 78235 transitions.
[2023-11-29 00:31:58,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:31:58,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1625.6) internal successors, (8128), 5 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) Word has length 9009
[2023-11-29 00:31:58,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:31:58,834 INFO  L225             Difference]: With dead ends: 47229
[2023-11-29 00:31:58,834 INFO  L226             Difference]: Without dead ends: 25132
[2023-11-29 00:31:58,843 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18017 GetRequests, 18008 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 00:31:58,844 INFO  L413           NwaCegarLoop]: 32021 mSDtfsCounter, 50638 mSDsluCounter, 31830 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50638 SdHoareTripleChecker+Valid, 63851 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time
[2023-11-29 00:31:58,844 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50638 Valid, 63851 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time]
[2023-11-29 00:31:58,864 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25132 states.
[2023-11-29 00:31:58,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25132 to 13532.
[2023-11-29 00:31:58,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13532 states, 13531 states have (on average 1.6652132141009535) internal successors, (22532), 13531 states have internal predecessors, (22532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:31:59,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13532 states to 13532 states and 22532 transitions.
[2023-11-29 00:31:59,007 INFO  L78                 Accepts]: Start accepts. Automaton has 13532 states and 22532 transitions. Word has length 9009
[2023-11-29 00:31:59,012 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:31:59,012 INFO  L495      AbstractCegarLoop]: Abstraction has 13532 states and 22532 transitions.
[2023-11-29 00:31:59,013 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1625.6) internal successors, (8128), 5 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 00:31:59,013 INFO  L276                IsEmpty]: Start isEmpty. Operand 13532 states and 22532 transitions.
[2023-11-29 00:31:59,333 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9011
[2023-11-29 00:31:59,333 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:31:59,335 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:31:59,452 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-29 00:31:59,535 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 00:31:59,536 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:31:59,536 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:31:59,537 INFO  L85        PathProgramCache]: Analyzing trace with hash 1106341373, now seen corresponding path program 1 times
[2023-11-29 00:31:59,537 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:31:59,537 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263445131]
[2023-11-29 00:31:59,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:31:59,538 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:32:00,349 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:32:00,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821397172]
[2023-11-29 00:32:00,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:32:00,351 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:32:00,351 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:32:00,352 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:32:00,352 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 00:32:12,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:32:12,770 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45366 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:32:12,887 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:32:13,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 32 proven. 675 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked.
[2023-11-29 00:32:13,954 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:32:14,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked.
[2023-11-29 00:32:14,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:32:14,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263445131]
[2023-11-29 00:32:14,154 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:32:14,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821397172]
[2023-11-29 00:32:14,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [821397172] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:32:14,154 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:32:14,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:32:14,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067281368]
[2023-11-29 00:32:14,161 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:32:14,167 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:32:14,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:32:14,174 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:32:14,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:32:14,177 INFO  L87              Difference]: Start difference. First operand 13532 states and 22532 transitions. Second operand  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:32:30,924 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:32:30,924 INFO  L93              Difference]: Finished difference Result 47237 states and 78243 transitions.
[2023-11-29 00:32:30,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:32:30,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9010
[2023-11-29 00:32:30,933 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:32:30,953 INFO  L225             Difference]: With dead ends: 47237
[2023-11-29 00:32:30,953 INFO  L226             Difference]: Without dead ends: 25133
[2023-11-29 00:32:30,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18019 GetRequests, 18010 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 00:32:30,967 INFO  L413           NwaCegarLoop]: 32013 mSDtfsCounter, 34969 mSDsluCounter, 48517 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34969 SdHoareTripleChecker+Valid, 80530 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time
[2023-11-29 00:32:30,967 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34969 Valid, 80530 Invalid, 23898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time]
[2023-11-29 00:32:30,992 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25133 states.
[2023-11-29 00:32:31,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25133 to 13534.
[2023-11-29 00:32:31,145 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13534 states, 13533 states have (on average 1.6651149043079878) internal successors, (22534), 13533 states have internal predecessors, (22534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:32:31,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 22534 transitions.
[2023-11-29 00:32:31,162 INFO  L78                 Accepts]: Start accepts. Automaton has 13534 states and 22534 transitions. Word has length 9010
[2023-11-29 00:32:31,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:32:31,167 INFO  L495      AbstractCegarLoop]: Abstraction has 13534 states and 22534 transitions.
[2023-11-29 00:32:31,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1626.2) internal successors, (8131), 5 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:32:31,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 13534 states and 22534 transitions.
[2023-11-29 00:32:31,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9012
[2023-11-29 00:32:31,491 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:32:31,493 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:32:31,612 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-11-29 00:32:31,693 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 00:32:31,694 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:32:31,694 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:32:31,695 INFO  L85        PathProgramCache]: Analyzing trace with hash 1551611957, now seen corresponding path program 1 times
[2023-11-29 00:32:31,695 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:32:31,695 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992456541]
[2023-11-29 00:32:31,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:32:31,696 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:32:32,575 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:32:32,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183635140]
[2023-11-29 00:32:32,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:32:32,577 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:32:32,577 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:32:32,578 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:32:32,579 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 00:32:44,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:32:44,840 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45369 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:32:44,943 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:32:45,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 34 proven. 675 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked.
[2023-11-29 00:32:45,932 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:32:46,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked.
[2023-11-29 00:32:46,141 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:32:46,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992456541]
[2023-11-29 00:32:46,141 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:32:46,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183635140]
[2023-11-29 00:32:46,141 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183635140] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:32:46,141 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:32:46,146 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 00:32:46,146 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239197909]
[2023-11-29 00:32:46,146 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:32:46,150 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:32:46,150 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:32:46,154 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:32:46,155 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 00:32:46,157 INFO  L87              Difference]: Start difference. First operand 13534 states and 22534 transitions. Second operand  has 6 states, 6 states have (on average 1355.6666666666667) internal successors, (8134), 6 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 00:33:17,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:33:17,704 INFO  L93              Difference]: Finished difference Result 58927 states and 97699 transitions.
[2023-11-29 00:33:17,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 00:33:17,706 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1355.6666666666667) internal successors, (8134), 6 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) Word has length 9011
[2023-11-29 00:33:17,712 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:33:17,738 INFO  L225             Difference]: With dead ends: 58927
[2023-11-29 00:33:17,738 INFO  L226             Difference]: Without dead ends: 36816
[2023-11-29 00:33:17,752 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18022 GetRequests, 18010 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 00:33:17,753 INFO  L413           NwaCegarLoop]: 32007 mSDtfsCounter, 54314 mSDsluCounter, 108639 mSDsCounter, 0 mSdLazyCounter, 46689 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54314 SdHoareTripleChecker+Valid, 140646 SdHoareTripleChecker+Invalid, 47907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 46689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:33:17,753 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [54314 Valid, 140646 Invalid, 47907 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1218 Valid, 46689 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time]
[2023-11-29 00:33:17,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36816 states.
[2023-11-29 00:33:17,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36816 to 13536.
[2023-11-29 00:33:17,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13536 states, 13535 states have (on average 1.665016623568526) internal successors, (22536), 13535 states have internal predecessors, (22536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:33:17,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 22536 transitions.
[2023-11-29 00:33:17,975 INFO  L78                 Accepts]: Start accepts. Automaton has 13536 states and 22536 transitions. Word has length 9011
[2023-11-29 00:33:17,979 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:33:17,979 INFO  L495      AbstractCegarLoop]: Abstraction has 13536 states and 22536 transitions.
[2023-11-29 00:33:17,981 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1355.6666666666667) internal successors, (8134), 6 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 00:33:17,981 INFO  L276                IsEmpty]: Start isEmpty. Operand 13536 states and 22536 transitions.
[2023-11-29 00:33:18,398 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9013
[2023-11-29 00:33:18,399 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:33:18,400 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 00:33:18,516 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-11-29 00:33:18,600 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 00:33:18,601 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:33:18,602 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:33:18,603 INFO  L85        PathProgramCache]: Analyzing trace with hash -330966237, now seen corresponding path program 1 times
[2023-11-29 00:33:18,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:33:18,603 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038272901]
[2023-11-29 00:33:18,604 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:33:18,604 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:33:19,418 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:33:19,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4457479]
[2023-11-29 00:33:19,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:33:19,420 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:33:19,420 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:33:19,421 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:33:19,422 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 00:33:31,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:33:31,537 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45372 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:33:31,653 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:33:33,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 675 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked.
[2023-11-29 00:33:33,007 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:33:33,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2023-11-29 00:33:33,187 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:33:33,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038272901]
[2023-11-29 00:33:33,187 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:33:33,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4457479]
[2023-11-29 00:33:33,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [4457479] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:33:33,188 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:33:33,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:33:33,192 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063435485]
[2023-11-29 00:33:33,192 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:33:33,196 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:33:33,196 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:33:33,202 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:33:33,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:33:33,204 INFO  L87              Difference]: Start difference. First operand 13536 states and 22536 transitions. Second operand  has 5 states, 5 states have (on average 1627.4) internal successors, (8137), 5 states have internal predecessors, (8137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:33:49,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:33:49,702 INFO  L93              Difference]: Finished difference Result 47253 states and 78259 transitions.
[2023-11-29 00:33:49,702 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:33:49,704 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1627.4) internal successors, (8137), 5 states have internal predecessors, (8137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9012
[2023-11-29 00:33:49,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:33:49,724 INFO  L225             Difference]: With dead ends: 47253
[2023-11-29 00:33:49,724 INFO  L226             Difference]: Without dead ends: 25135
[2023-11-29 00:33:49,731 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18023 GetRequests, 18014 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 00:33:49,731 INFO  L413           NwaCegarLoop]: 31997 mSDtfsCounter, 34973 mSDsluCounter, 46249 mSDsCounter, 0 mSdLazyCounter, 21806 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34973 SdHoareTripleChecker+Valid, 78246 SdHoareTripleChecker+Invalid, 23022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 21806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time
[2023-11-29 00:33:49,731 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34973 Valid, 78246 Invalid, 23022 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1216 Valid, 21806 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time]
[2023-11-29 00:33:49,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25135 states.
[2023-11-29 00:33:49,867 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 13538.
[2023-11-29 00:33:49,879 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13538 states, 13537 states have (on average 1.6649183718696905) internal successors, (22538), 13537 states have internal predecessors, (22538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:33:49,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13538 states to 13538 states and 22538 transitions.
[2023-11-29 00:33:49,895 INFO  L78                 Accepts]: Start accepts. Automaton has 13538 states and 22538 transitions. Word has length 9012
[2023-11-29 00:33:49,900 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:33:49,900 INFO  L495      AbstractCegarLoop]: Abstraction has 13538 states and 22538 transitions.
[2023-11-29 00:33:49,901 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1627.4) internal successors, (8137), 5 states have internal predecessors, (8137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:33:49,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 13538 states and 22538 transitions.
[2023-11-29 00:33:50,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9014
[2023-11-29 00:33:50,222 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:33:50,224 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:33:50,341 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-29 00:33:50,424 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:33:50,424 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:33:50,424 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:33:50,425 INFO  L85        PathProgramCache]: Analyzing trace with hash -1059774319, now seen corresponding path program 1 times
[2023-11-29 00:33:50,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:33:50,425 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18247161]
[2023-11-29 00:33:50,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:33:50,426 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:33:51,244 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:33:51,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803201845]
[2023-11-29 00:33:51,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:33:51,246 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:33:51,246 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:33:51,246 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:33:51,247 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-29 00:34:02,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:34:03,215 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45376 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:34:03,317 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:34:04,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 38 proven. 675 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked.
[2023-11-29 00:34:04,298 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:34:04,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked.
[2023-11-29 00:34:04,674 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:34:04,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18247161]
[2023-11-29 00:34:04,674 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:34:04,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803201845]
[2023-11-29 00:34:04,674 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803201845] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:34:04,674 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:34:04,679 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:34:04,679 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296131397]
[2023-11-29 00:34:04,679 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:34:04,684 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:34:04,684 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:34:04,687 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:34:04,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:34:04,689 INFO  L87              Difference]: Start difference. First operand 13538 states and 22538 transitions. Second operand  has 5 states, 5 states have (on average 1628.0) internal successors, (8140), 5 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:34:19,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:34:19,409 INFO  L93              Difference]: Finished difference Result 47261 states and 78267 transitions.
[2023-11-29 00:34:19,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:34:19,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1628.0) internal successors, (8140), 5 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9013
[2023-11-29 00:34:19,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:34:19,516 INFO  L225             Difference]: With dead ends: 47261
[2023-11-29 00:34:19,517 INFO  L226             Difference]: Without dead ends: 25136
[2023-11-29 00:34:19,523 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18025 GetRequests, 18016 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 00:34:19,523 INFO  L413           NwaCegarLoop]: 31989 mSDtfsCounter, 50619 mSDsluCounter, 31809 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50619 SdHoareTripleChecker+Valid, 63798 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time
[2023-11-29 00:34:19,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50619 Valid, 63798 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time]
[2023-11-29 00:34:19,539 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25136 states.
[2023-11-29 00:34:19,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25136 to 13540.
[2023-11-29 00:34:19,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13540 states, 13539 states have (on average 1.6648201491986114) internal successors, (22540), 13539 states have internal predecessors, (22540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:34:19,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13540 states to 13540 states and 22540 transitions.
[2023-11-29 00:34:19,674 INFO  L78                 Accepts]: Start accepts. Automaton has 13540 states and 22540 transitions. Word has length 9013
[2023-11-29 00:34:19,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:34:19,679 INFO  L495      AbstractCegarLoop]: Abstraction has 13540 states and 22540 transitions.
[2023-11-29 00:34:19,680 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1628.0) internal successors, (8140), 5 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:34:19,680 INFO  L276                IsEmpty]: Start isEmpty. Operand 13540 states and 22540 transitions.
[2023-11-29 00:34:20,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9015
[2023-11-29 00:34:20,009 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:34:20,011 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:34:20,126 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-29 00:34:20,211 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:34:20,211 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:34:20,212 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:34:20,213 INFO  L85        PathProgramCache]: Analyzing trace with hash -1484434229, now seen corresponding path program 1 times
[2023-11-29 00:34:20,213 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:34:20,213 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788137537]
[2023-11-29 00:34:20,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:34:20,215 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:34:21,104 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:34:21,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670592602]
[2023-11-29 00:34:21,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:34:21,106 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:34:21,106 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:34:21,107 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:34:21,108 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-29 00:34:33,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:34:33,486 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45379 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-29 00:34:33,604 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:34:34,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 40 proven. 675 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked.
[2023-11-29 00:34:34,830 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:34:35,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked.
[2023-11-29 00:34:35,034 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:34:35,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788137537]
[2023-11-29 00:34:35,034 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:34:35,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670592602]
[2023-11-29 00:34:35,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670592602] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:34:35,034 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:34:35,038 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-11-29 00:34:35,039 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055482136]
[2023-11-29 00:34:35,039 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:34:35,042 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 00:34:35,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:34:35,046 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 00:34:35,046 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-29 00:34:35,048 INFO  L87              Difference]: Start difference. First operand 13540 states and 22540 transitions. Second operand  has 6 states, 6 states have (on average 1357.1666666666667) internal successors, (8143), 6 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:02,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:35:02,428 INFO  L93              Difference]: Finished difference Result 58966 states and 97744 transitions.
[2023-11-29 00:35:02,429 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 00:35:02,430 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1357.1666666666667) internal successors, (8143), 6 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9014
[2023-11-29 00:35:02,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:35:02,454 INFO  L225             Difference]: With dead ends: 58966
[2023-11-29 00:35:02,454 INFO  L226             Difference]: Without dead ends: 36834
[2023-11-29 00:35:02,460 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18028 GetRequests, 18016 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 00:35:02,461 INFO  L413           NwaCegarLoop]: 31983 mSDtfsCounter, 69963 mSDsluCounter, 77438 mSDsCounter, 0 mSdLazyCounter, 36076 mSolverCounterSat, 1219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69963 SdHoareTripleChecker+Valid, 109421 SdHoareTripleChecker+Invalid, 37295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 36076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:35:02,461 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69963 Valid, 109421 Invalid, 37295 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1219 Valid, 36076 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time]
[2023-11-29 00:35:02,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36834 states.
[2023-11-29 00:35:02,630 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36834 to 13542.
[2023-11-29 00:35:02,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13542 states, 13541 states have (on average 1.6647219555424266) internal successors, (22542), 13541 states have internal predecessors, (22542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:02,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13542 states to 13542 states and 22542 transitions.
[2023-11-29 00:35:02,659 INFO  L78                 Accepts]: Start accepts. Automaton has 13542 states and 22542 transitions. Word has length 9014
[2023-11-29 00:35:02,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:35:02,664 INFO  L495      AbstractCegarLoop]: Abstraction has 13542 states and 22542 transitions.
[2023-11-29 00:35:02,665 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1357.1666666666667) internal successors, (8143), 6 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:02,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 13542 states and 22542 transitions.
[2023-11-29 00:35:02,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9016
[2023-11-29 00:35:02,991 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:35:02,992 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:35:03,121 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-11-29 00:35:03,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2023-11-29 00:35:03,193 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:35:03,194 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:35:03,195 INFO  L85        PathProgramCache]: Analyzing trace with hash 1675758699, now seen corresponding path program 1 times
[2023-11-29 00:35:03,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:35:03,195 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231220756]
[2023-11-29 00:35:03,196 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:35:03,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:35:04,176 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:35:04,176 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892147838]
[2023-11-29 00:35:04,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:35:04,178 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:35:04,178 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:35:04,179 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:35:04,182 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-29 00:35:16,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:35:16,356 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45382 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:35:16,460 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:35:17,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 42 proven. 675 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked.
[2023-11-29 00:35:17,738 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:35:17,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked.
[2023-11-29 00:35:17,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:35:17,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231220756]
[2023-11-29 00:35:17,921 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:35:17,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892147838]
[2023-11-29 00:35:17,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [892147838] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:35:17,921 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:35:17,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:35:17,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120093615]
[2023-11-29 00:35:17,928 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:35:17,932 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:35:17,932 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:35:17,936 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:35:17,936 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:35:17,937 INFO  L87              Difference]: Start difference. First operand 13542 states and 22542 transitions. Second operand  has 5 states, 5 states have (on average 1629.2) internal successors, (8146), 5 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:33,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:35:33,080 INFO  L93              Difference]: Finished difference Result 47277 states and 78283 transitions.
[2023-11-29 00:35:33,080 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:35:33,082 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1629.2) internal successors, (8146), 5 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9015
[2023-11-29 00:35:33,087 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:35:33,102 INFO  L225             Difference]: With dead ends: 47277
[2023-11-29 00:35:33,102 INFO  L226             Difference]: Without dead ends: 25138
[2023-11-29 00:35:33,108 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18029 GetRequests, 18020 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 00:35:33,109 INFO  L413           NwaCegarLoop]: 31973 mSDtfsCounter, 50584 mSDsluCounter, 31800 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50584 SdHoareTripleChecker+Valid, 63773 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:35:33,109 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50584 Valid, 63773 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time]
[2023-11-29 00:35:33,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25138 states.
[2023-11-29 00:35:33,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25138 to 13544.
[2023-11-29 00:35:33,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13544 states, 13543 states have (on average 1.6646237908882817) internal successors, (22544), 13543 states have internal predecessors, (22544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:33,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 22544 transitions.
[2023-11-29 00:35:33,279 INFO  L78                 Accepts]: Start accepts. Automaton has 13544 states and 22544 transitions. Word has length 9015
[2023-11-29 00:35:33,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:35:33,283 INFO  L495      AbstractCegarLoop]: Abstraction has 13544 states and 22544 transitions.
[2023-11-29 00:35:33,285 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1629.2) internal successors, (8146), 5 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:35:33,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 13544 states and 22544 transitions.
[2023-11-29 00:35:33,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9017
[2023-11-29 00:35:33,607 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:35:33,609 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 00:35:33,729 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-29 00:35:33,809 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-11-29 00:35:33,809 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:35:33,810 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:35:33,811 INFO  L85        PathProgramCache]: Analyzing trace with hash 772892145, now seen corresponding path program 1 times
[2023-11-29 00:35:33,811 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:35:33,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207825255]
[2023-11-29 00:35:33,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:35:33,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:35:34,683 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:35:34,684 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26685159]
[2023-11-29 00:35:34,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:35:34,685 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:35:34,685 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:35:34,686 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:35:34,687 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-11-29 00:35:46,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:35:47,065 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45385 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:35:47,166 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:35:48,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 675 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked.
[2023-11-29 00:35:48,272 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:35:48,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked.
[2023-11-29 00:35:48,668 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:35:48,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207825255]
[2023-11-29 00:35:48,668 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:35:48,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26685159]
[2023-11-29 00:35:48,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [26685159] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:35:48,669 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:35:48,673 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:35:48,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940284626]
[2023-11-29 00:35:48,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:35:48,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:35:48,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:35:48,681 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:35:48,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:35:48,683 INFO  L87              Difference]: Start difference. First operand 13544 states and 22544 transitions. Second operand  has 5 states, 5 states have (on average 1629.8) internal successors, (8149), 5 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:05,763 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:36:05,763 INFO  L93              Difference]: Finished difference Result 47285 states and 78291 transitions.
[2023-11-29 00:36:05,763 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:36:05,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1629.8) internal successors, (8149), 5 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9016
[2023-11-29 00:36:05,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:36:05,785 INFO  L225             Difference]: With dead ends: 47285
[2023-11-29 00:36:05,785 INFO  L226             Difference]: Without dead ends: 25139
[2023-11-29 00:36:05,791 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18031 GetRequests, 18022 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 00:36:05,791 INFO  L413           NwaCegarLoop]: 31965 mSDtfsCounter, 34933 mSDsluCounter, 48457 mSDsCounter, 0 mSdLazyCounter, 22682 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34933 SdHoareTripleChecker+Valid, 80422 SdHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 22682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time
[2023-11-29 00:36:05,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34933 Valid, 80422 Invalid, 23898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 22682 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time]
[2023-11-29 00:36:05,810 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25139 states.
[2023-11-29 00:36:05,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25139 to 13546.
[2023-11-29 00:36:05,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13546 states, 13545 states have (on average 1.6645256552233296) internal successors, (22546), 13545 states have internal predecessors, (22546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:05,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 22546 transitions.
[2023-11-29 00:36:05,949 INFO  L78                 Accepts]: Start accepts. Automaton has 13546 states and 22546 transitions. Word has length 9016
[2023-11-29 00:36:05,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:36:05,954 INFO  L495      AbstractCegarLoop]: Abstraction has 13546 states and 22546 transitions.
[2023-11-29 00:36:05,955 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1629.8) internal successors, (8149), 5 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:05,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 13546 states and 22546 transitions.
[2023-11-29 00:36:06,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9018
[2023-11-29 00:36:06,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:36:06,277 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 00:36:06,393 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-11-29 00:36:06,477 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:36:06,477 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:36:06,478 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:36:06,479 INFO  L85        PathProgramCache]: Analyzing trace with hash -1820639801, now seen corresponding path program 1 times
[2023-11-29 00:36:06,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:36:06,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463592615]
[2023-11-29 00:36:06,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:36:06,480 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:36:07,432 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:36:07,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125375509]
[2023-11-29 00:36:07,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:36:07,434 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:36:07,434 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:36:07,435 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:36:07,436 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-11-29 00:36:19,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:36:19,890 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45389 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:36:19,992 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:36:20,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 46 proven. 675 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked.
[2023-11-29 00:36:20,959 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:36:21,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked.
[2023-11-29 00:36:21,362 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:36:21,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463592615]
[2023-11-29 00:36:21,362 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:36:21,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125375509]
[2023-11-29 00:36:21,362 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [125375509] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:36:21,362 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:36:21,367 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:36:21,367 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064579293]
[2023-11-29 00:36:21,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:36:21,371 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:36:21,371 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:36:21,375 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:36:21,375 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:36:21,376 INFO  L87              Difference]: Start difference. First operand 13546 states and 22546 transitions. Second operand  has 5 states, 5 states have (on average 1630.4) internal successors, (8152), 5 states have internal predecessors, (8152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:36,586 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:36:36,586 INFO  L93              Difference]: Finished difference Result 47293 states and 78299 transitions.
[2023-11-29 00:36:36,587 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 00:36:36,588 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1630.4) internal successors, (8152), 5 states have internal predecessors, (8152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9017
[2023-11-29 00:36:36,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:36:36,609 INFO  L225             Difference]: With dead ends: 47293
[2023-11-29 00:36:36,609 INFO  L226             Difference]: Without dead ends: 25140
[2023-11-29 00:36:36,614 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18033 GetRequests, 18024 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 00:36:36,614 INFO  L413           NwaCegarLoop]: 31957 mSDtfsCounter, 50587 mSDsluCounter, 31789 mSDsCounter, 0 mSdLazyCounter, 16938 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50587 SdHoareTripleChecker+Valid, 63746 SdHoareTripleChecker+Invalid, 18154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 16938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time
[2023-11-29 00:36:36,615 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50587 Valid, 63746 Invalid, 18154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1216 Valid, 16938 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time]
[2023-11-29 00:36:36,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25140 states.
[2023-11-29 00:36:36,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25140 to 13548.
[2023-11-29 00:36:36,760 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13548 states, 13547 states have (on average 1.6644275485347308) internal successors, (22548), 13547 states have internal predecessors, (22548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:36,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13548 states to 13548 states and 22548 transitions.
[2023-11-29 00:36:36,776 INFO  L78                 Accepts]: Start accepts. Automaton has 13548 states and 22548 transitions. Word has length 9017
[2023-11-29 00:36:36,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:36:36,781 INFO  L495      AbstractCegarLoop]: Abstraction has 13548 states and 22548 transitions.
[2023-11-29 00:36:36,782 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1630.4) internal successors, (8152), 5 states have internal predecessors, (8152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 00:36:36,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 13548 states and 22548 transitions.
[2023-11-29 00:36:37,102 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9019
[2023-11-29 00:36:37,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:36:37,104 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 00:36:37,221 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-11-29 00:36:37,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:36:37,305 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:36:37,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:36:37,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -1064791911, now seen corresponding path program 1 times
[2023-11-29 00:36:37,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:36:37,306 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636421907]
[2023-11-29 00:36:37,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:36:37,307 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:36:38,135 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 00:36:38,135 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083964660]
[2023-11-29 00:36:38,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:36:38,137 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 00:36:38,137 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:36:38,138 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 00:36:38,138 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e1ad30-11c2-441c-a9c4-67b11a0a7433/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-11-29 00:36:50,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:36:50,678 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45392 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-29 00:36:50,779 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 00:36:51,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 48 proven. 675 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked.
[2023-11-29 00:36:51,995 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 00:36:52,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 912 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked.
[2023-11-29 00:36:52,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:36:52,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636421907]
[2023-11-29 00:36:52,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 00:36:52,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083964660]
[2023-11-29 00:36:52,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083964660] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-29 00:36:52,190 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-29 00:36:52,194 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-11-29 00:36:52,195 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526003104]
[2023-11-29 00:36:52,195 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:36:52,198 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 00:36:52,198 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:36:52,202 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 00:36:52,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-11-29 00:36:52,204 INFO  L87              Difference]: Start difference. First operand 13548 states and 22548 transitions. Second operand  has 5 states, 5 states have (on average 1631.0) internal successors, (8155), 5 states have internal predecessors, (8155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)