./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/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_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/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_61446d6e-5f07-4fca-a442-b9f1c5da0921/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 af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:36:18,356 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:36:18,437 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:36:18,442 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:36:18,442 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:36:18,466 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:36:18,466 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:36:18,467 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:36:18,468 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:36:18,468 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:36:18,469 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:36:18,469 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:36:18,470 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:36:18,471 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:36:18,471 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:36:18,472 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:36:18,472 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:36:18,473 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:36:18,474 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:36:18,474 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:36:18,475 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:36:18,475 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:36:18,476 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:36:18,476 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:36:18,477 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:36:18,477 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:36:18,478 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:36:18,478 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:36:18,478 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:36:18,479 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:36:18,479 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:36:18,480 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:36:18,480 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:36:18,480 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:36:18,481 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:36:18,481 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:36:18,481 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:36:18,481 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:36:18,481 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:36:18,482 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/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_61446d6e-5f07-4fca-a442-b9f1c5da0921/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 -> af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
[2023-11-29 05:36:18,691 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:36:18,712 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:36:18,715 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:36:18,716 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:36:18,716 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:36:18,718 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:36:21,448 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:36:21,851 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:36:21,851 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:36:21,888 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/d17d0f4d0/a7bf3f17126947e39899b7696b316762/FLAGb7885362a
[2023-11-29 05:36:21,902 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/d17d0f4d0/a7bf3f17126947e39899b7696b316762
[2023-11-29 05:36:21,905 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:36:21,906 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:36:21,907 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:36:21,907 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:36:21,913 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:36:21,913 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:21" (1/1) ...
[2023-11-29 05:36:21,914 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230377f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:21, skipping insertion in model container
[2023-11-29 05:36:21,914 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:21" (1/1) ...
[2023-11-29 05:36:22,037 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:36:22,235 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2023-11-29 05:36:23,034 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:36:23,044 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:36:23,055 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2023-11-29 05:36:23,604 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:36:23,621 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:36:23,622 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23 WrapperNode
[2023-11-29 05:36:23,622 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:36:23,623 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:36:23,623 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:36:23,623 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:36:23,631 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:23,812 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:25,637 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25756
[2023-11-29 05:36:25,637 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:36:25,638 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:36:25,638 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:36:25,638 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:36:25,647 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:25,647 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:26,145 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:26,582 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 05:36:26,582 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:26,582 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,060 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,234 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,349 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,428 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,764 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:36:27,765 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:36:27,765 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:36:27,765 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:36:27,766 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (1/1) ...
[2023-11-29 05:36:27,772 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:36:27,783 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:36:27,794 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:36:27,800 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:36:27,825 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:36:27,825 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:36:27,825 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:36:27,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:36:28,838 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:36:28,841 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:36:41,682 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:36:42,016 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:36:42,016 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:36:42,019 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:42 BoogieIcfgContainer
[2023-11-29 05:36:42,020 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:36:42,023 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:36:42,023 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:36:42,026 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:36:42,027 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:36:21" (1/3) ...
[2023-11-29 05:36:42,028 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8975a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:42, skipping insertion in model container
[2023-11-29 05:36:42,028 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:23" (2/3) ...
[2023-11-29 05:36:42,028 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8975a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:42, skipping insertion in model container
[2023-11-29 05:36:42,029 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:42" (3/3) ...
[2023-11-29 05:36:42,030 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:36:42,050 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:36:42,050 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:36:42,205 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:36:42,212 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;@18e505cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:36:42,213 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:36:42,236 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5907 states, 5905 states have (on average 1.6702794242167656) internal successors, (9863), 5906 states have internal predecessors, (9863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:42,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 309
[2023-11-29 05:36:42,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:42,262 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]
[2023-11-29 05:36:42,263 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:42,268 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:42,268 INFO  L85        PathProgramCache]: Analyzing trace with hash -899498307, now seen corresponding path program 1 times
[2023-11-29 05:36:42,278 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:42,278 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819299465]
[2023-11-29 05:36:42,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:42,279 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:42,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:43,995 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 05:36:43,996 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:36:43,996 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819299465]
[2023-11-29 05:36:43,997 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819299465] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:36:43,997 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:36:43,997 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:36:43,999 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593041311]
[2023-11-29 05:36:44,000 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:36:44,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:36:44,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:36:44,036 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:36:44,037 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:36:44,055 INFO  L87              Difference]: Start difference. First operand  has 5907 states, 5905 states have (on average 1.6702794242167656) internal successors, (9863), 5906 states have internal predecessors, (9863), 0 states have call successors, (0), 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 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:44,491 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:36:44,491 INFO  L93              Difference]: Finished difference Result 11594 states and 19362 transitions.
[2023-11-29 05:36:44,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:36:44,494 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 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 308
[2023-11-29 05:36:44,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:36:44,543 INFO  L225             Difference]: With dead ends: 11594
[2023-11-29 05:36:44,543 INFO  L226             Difference]: Without dead ends: 5907
[2023-11-29 05:36:44,556 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 05:36:44,560 INFO  L413           NwaCegarLoop]: 9856 mSDtfsCounter, 1 mSDsluCounter, 19707 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29563 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 05:36:44,561 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29563 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:36:44,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5907 states.
[2023-11-29 05:36:44,736 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5907.
[2023-11-29 05:36:44,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5907 states, 5906 states have (on average 1.6696579749407383) internal successors, (9861), 5906 states have internal predecessors, (9861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:44,766 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5907 states to 5907 states and 9861 transitions.
[2023-11-29 05:36:44,767 INFO  L78                 Accepts]: Start accepts. Automaton has 5907 states and 9861 transitions. Word has length 308
[2023-11-29 05:36:44,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:36:44,769 INFO  L495      AbstractCegarLoop]: Abstraction has 5907 states and 9861 transitions.
[2023-11-29 05:36:44,769 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:44,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 5907 states and 9861 transitions.
[2023-11-29 05:36:44,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2023-11-29 05:36:44,776 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:44,777 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]
[2023-11-29 05:36:44,777 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:36:44,777 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:44,778 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:44,778 INFO  L85        PathProgramCache]: Analyzing trace with hash -2112916969, now seen corresponding path program 1 times
[2023-11-29 05:36:44,778 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:44,778 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182506153]
[2023-11-29 05:36:44,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:44,779 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:44,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:45,540 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 05:36:45,541 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:36:45,541 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182506153]
[2023-11-29 05:36:45,542 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182506153] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:36:45,542 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:36:45,542 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:36:45,542 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317834022]
[2023-11-29 05:36:45,543 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:36:45,545 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:36:45,545 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:36:45,546 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:36:45,546 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:36:45,547 INFO  L87              Difference]: Start difference. First operand 5907 states and 9861 transitions. Second operand  has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:45,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:36:45,885 INFO  L93              Difference]: Finished difference Result 11597 states and 19360 transitions.
[2023-11-29 05:36:45,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:36:45,886 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 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 309
[2023-11-29 05:36:45,887 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:36:45,919 INFO  L225             Difference]: With dead ends: 11597
[2023-11-29 05:36:45,919 INFO  L226             Difference]: Without dead ends: 5910
[2023-11-29 05:36:45,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:36:45,929 INFO  L413           NwaCegarLoop]: 9856 mSDtfsCounter, 1 mSDsluCounter, 19705 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29561 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:36:45,930 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29561 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:36:45,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5910 states.
[2023-11-29 05:36:46,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5909.
[2023-11-29 05:36:46,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5909 states, 5908 states have (on average 1.669431279620853) internal successors, (9863), 5908 states have internal predecessors, (9863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:46,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5909 states to 5909 states and 9863 transitions.
[2023-11-29 05:36:46,128 INFO  L78                 Accepts]: Start accepts. Automaton has 5909 states and 9863 transitions. Word has length 309
[2023-11-29 05:36:46,129 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:36:46,129 INFO  L495      AbstractCegarLoop]: Abstraction has 5909 states and 9863 transitions.
[2023-11-29 05:36:46,130 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:46,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 5909 states and 9863 transitions.
[2023-11-29 05:36:46,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 311
[2023-11-29 05:36:46,137 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:46,137 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]
[2023-11-29 05:36:46,137 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:36:46,138 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:46,138 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:46,138 INFO  L85        PathProgramCache]: Analyzing trace with hash -1286347241, now seen corresponding path program 1 times
[2023-11-29 05:36:46,139 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:46,139 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310135083]
[2023-11-29 05:36:46,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:46,140 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:46,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:46,890 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 05:36:46,890 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:36:46,890 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310135083]
[2023-11-29 05:36:46,891 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310135083] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:36:46,891 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:36:46,891 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:36:46,892 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992835903]
[2023-11-29 05:36:46,892 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:36:46,893 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:36:46,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:36:46,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:36:46,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:36:46,895 INFO  L87              Difference]: Start difference. First operand 5909 states and 9863 transitions. Second operand  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:47,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:36:47,348 INFO  L93              Difference]: Finished difference Result 17277 states and 28842 transitions.
[2023-11-29 05:36:47,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:36:47,349 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310
[2023-11-29 05:36:47,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:36:47,414 INFO  L225             Difference]: With dead ends: 17277
[2023-11-29 05:36:47,414 INFO  L226             Difference]: Without dead ends: 11588
[2023-11-29 05:36:47,425 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 05:36:47,426 INFO  L413           NwaCegarLoop]: 10237 mSDtfsCounter, 9479 mSDsluCounter, 20082 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9479 SdHoareTripleChecker+Valid, 30319 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:36:47,427 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9479 Valid, 30319 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:36:47,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11588 states.
[2023-11-29 05:36:47,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 5911.
[2023-11-29 05:36:47,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5911 states, 5910 states have (on average 1.6692047377326564) internal successors, (9865), 5910 states have internal predecessors, (9865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:47,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 9865 transitions.
[2023-11-29 05:36:47,638 INFO  L78                 Accepts]: Start accepts. Automaton has 5911 states and 9865 transitions. Word has length 310
[2023-11-29 05:36:47,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:36:47,639 INFO  L495      AbstractCegarLoop]: Abstraction has 5911 states and 9865 transitions.
[2023-11-29 05:36:47,639 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:47,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 5911 states and 9865 transitions.
[2023-11-29 05:36:47,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2023-11-29 05:36:47,645 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:47,646 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]
[2023-11-29 05:36:47,646 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:36:47,647 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:47,647 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:47,647 INFO  L85        PathProgramCache]: Analyzing trace with hash -15177221, now seen corresponding path program 1 times
[2023-11-29 05:36:47,648 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:47,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674120241]
[2023-11-29 05:36:47,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:47,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:47,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:48,857 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 05:36:48,858 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:36:48,858 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674120241]
[2023-11-29 05:36:48,858 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674120241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:36:48,858 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:36:48,858 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 05:36:48,859 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525185105]
[2023-11-29 05:36:48,859 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:36:48,860 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-29 05:36:48,860 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:36:48,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-29 05:36:48,861 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-11-29 05:36:48,861 INFO  L87              Difference]: Start difference. First operand 5911 states and 9865 transitions. Second operand  has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:49,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:36:49,740 INFO  L93              Difference]: Finished difference Result 17514 states and 29233 transitions.
[2023-11-29 05:36:49,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:36:49,741 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 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 311
[2023-11-29 05:36:49,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:36:49,768 INFO  L225             Difference]: With dead ends: 17514
[2023-11-29 05:36:49,769 INFO  L226             Difference]: Without dead ends: 11823
[2023-11-29 05:36:49,778 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:36:49,779 INFO  L413           NwaCegarLoop]: 10232 mSDtfsCounter, 38395 mSDsluCounter, 39774 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38395 SdHoareTripleChecker+Valid, 50006 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:36:49,780 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38395 Valid, 50006 Invalid, 54 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:36:49,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11823 states.
[2023-11-29 05:36:49,971 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 6142.
[2023-11-29 05:36:49,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.669109265591923) internal successors, (10250), 6141 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:49,995 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10250 transitions.
[2023-11-29 05:36:49,995 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10250 transitions. Word has length 311
[2023-11-29 05:36:49,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:36:49,996 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10250 transitions.
[2023-11-29 05:36:49,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:36:49,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10250 transitions.
[2023-11-29 05:36:50,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4019
[2023-11-29 05:36:50,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:36:50,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:36:50,505 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:36:50,505 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:36:50,506 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:36:50,507 INFO  L85        PathProgramCache]: Analyzing trace with hash -139604665, now seen corresponding path program 1 times
[2023-11-29 05:36:50,508 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:36:50,508 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538769363]
[2023-11-29 05:36:50,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:50,509 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:36:51,262 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:36:51,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117703947]
[2023-11-29 05:36:51,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:36:51,264 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:36:51,264 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:36:51,268 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:36:51,274 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:36:55,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:36:55,649 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17963 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:36:55,744 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:36:57,728 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:36:57,728 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:36:57,728 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:36:57,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538769363]
[2023-11-29 05:36:57,728 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:36:57,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117703947]
[2023-11-29 05:36:57,729 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [117703947] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:36:57,729 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:36:57,730 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:36:57,730 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120998372]
[2023-11-29 05:36:57,730 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:36:57,734 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:36:57,734 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:36:57,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:36:57,738 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:36:57,739 INFO  L87              Difference]: Start difference. First operand 6142 states and 10250 transitions. Second operand  has 4 states, 4 states have (on average 1004.5) internal successors, (4018), 3 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:00,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:00,867 INFO  L93              Difference]: Finished difference Result 12328 states and 20580 transitions.
[2023-11-29 05:37:00,868 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:00,869 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1004.5) internal successors, (4018), 3 states have internal predecessors, (4018), 0 states have call successors, (0), 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 4018
[2023-11-29 05:37:00,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:00,883 INFO  L225             Difference]: With dead ends: 12328
[2023-11-29 05:37:00,883 INFO  L226             Difference]: Without dead ends: 6637
[2023-11-29 05:37:00,891 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4018 GetRequests, 4015 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 05:37:00,892 INFO  L413           NwaCegarLoop]: 8716 mSDtfsCounter, 18754 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 3051 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18754 SdHoareTripleChecker+Valid, 9604 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:00,892 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18754 Valid, 9604 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3051 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 05:37:00,906 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6637 states.
[2023-11-29 05:37:01,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6637 to 6142.
[2023-11-29 05:37:01,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6689464256635727) internal successors, (10249), 6141 states have internal predecessors, (10249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:01,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10249 transitions.
[2023-11-29 05:37:01,019 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10249 transitions. Word has length 4018
[2023-11-29 05:37:01,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:01,021 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10249 transitions.
[2023-11-29 05:37:01,023 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1004.5) internal successors, (4018), 3 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:01,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10249 transitions.
[2023-11-29 05:37:01,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4020
[2023-11-29 05:37:01,132 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:01,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:01,178 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 05:37:01,334 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:01,335 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:01,335 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:01,336 INFO  L85        PathProgramCache]: Analyzing trace with hash 1058694273, now seen corresponding path program 1 times
[2023-11-29 05:37:01,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:01,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407121606]
[2023-11-29 05:37:01,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:01,337 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:01,701 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:01,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925603710]
[2023-11-29 05:37:01,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:01,702 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:01,702 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:01,703 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:01,705 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 05:37:05,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:05,701 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17964 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:05,774 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:07,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:07,760 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:07,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:07,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407121606]
[2023-11-29 05:37:07,761 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:07,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925603710]
[2023-11-29 05:37:07,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [925603710] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:07,761 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:07,762 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:07,763 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233842807]
[2023-11-29 05:37:07,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:07,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:07,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:07,772 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:07,773 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:07,774 INFO  L87              Difference]: Start difference. First operand 6142 states and 10249 transitions. Second operand  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 3 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:10,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:10,928 INFO  L93              Difference]: Finished difference Result 12335 states and 20589 transitions.
[2023-11-29 05:37:10,929 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:10,930 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 3 states have internal predecessors, (4019), 0 states have call successors, (0), 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 4019
[2023-11-29 05:37:10,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:10,943 INFO  L225             Difference]: With dead ends: 12335
[2023-11-29 05:37:10,943 INFO  L226             Difference]: Without dead ends: 6644
[2023-11-29 05:37:10,949 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4019 GetRequests, 4016 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 05:37:10,949 INFO  L413           NwaCegarLoop]: 8725 mSDtfsCounter, 18747 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18747 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:10,950 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18747 Valid, 9623 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 05:37:10,958 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6644 states.
[2023-11-29 05:37:11,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 6142.
[2023-11-29 05:37:11,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6687835857352222) internal successors, (10248), 6141 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:11,026 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10248 transitions.
[2023-11-29 05:37:11,027 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10248 transitions. Word has length 4019
[2023-11-29 05:37:11,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:11,028 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10248 transitions.
[2023-11-29 05:37:11,030 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 3 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:11,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10248 transitions.
[2023-11-29 05:37:11,103 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4021
[2023-11-29 05:37:11,103 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:11,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:11,150 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 05:37:11,306 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-29 05:37:11,306 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:11,307 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:11,308 INFO  L85        PathProgramCache]: Analyzing trace with hash 1819654102, now seen corresponding path program 1 times
[2023-11-29 05:37:11,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:11,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959067160]
[2023-11-29 05:37:11,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:11,309 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:11,676 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:11,676 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76039478]
[2023-11-29 05:37:11,677 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:11,678 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:11,678 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:11,679 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:11,680 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 05:37:15,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:15,726 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17965 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:15,799 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:17,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:17,419 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:17,419 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:17,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959067160]
[2023-11-29 05:37:17,419 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:17,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76039478]
[2023-11-29 05:37:17,419 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [76039478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:17,419 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:17,420 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:17,421 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67745014]
[2023-11-29 05:37:17,421 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:17,425 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:17,425 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:17,430 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:17,430 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:17,432 INFO  L87              Difference]: Start difference. First operand 6142 states and 10248 transitions. Second operand  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 3 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:20,367 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:20,368 INFO  L93              Difference]: Finished difference Result 12339 states and 20593 transitions.
[2023-11-29 05:37:20,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:20,369 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 3 states have internal predecessors, (4020), 0 states have call successors, (0), 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 4020
[2023-11-29 05:37:20,370 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:20,379 INFO  L225             Difference]: With dead ends: 12339
[2023-11-29 05:37:20,379 INFO  L226             Difference]: Without dead ends: 6648
[2023-11-29 05:37:20,387 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4020 GetRequests, 4017 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 05:37:20,388 INFO  L413           NwaCegarLoop]: 8729 mSDtfsCounter, 18742 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18742 SdHoareTripleChecker+Valid, 9632 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:20,388 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18742 Valid, 9632 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2023-11-29 05:37:20,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6648 states.
[2023-11-29 05:37:20,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 6142.
[2023-11-29 05:37:20,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6686207458068718) internal successors, (10247), 6141 states have internal predecessors, (10247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:20,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10247 transitions.
[2023-11-29 05:37:20,488 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10247 transitions. Word has length 4020
[2023-11-29 05:37:20,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:20,490 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10247 transitions.
[2023-11-29 05:37:20,491 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 3 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:20,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10247 transitions.
[2023-11-29 05:37:20,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4022
[2023-11-29 05:37:20,608 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:20,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:20,668 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 05:37:20,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:20,812 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:20,812 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:20,814 INFO  L85        PathProgramCache]: Analyzing trace with hash -645554922, now seen corresponding path program 1 times
[2023-11-29 05:37:20,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:20,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801024313]
[2023-11-29 05:37:20,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:20,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:21,152 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:21,153 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061404361]
[2023-11-29 05:37:21,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:21,154 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:21,154 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:21,155 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:21,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 05:37:25,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:25,122 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17966 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:25,176 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:27,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:27,034 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:27,034 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:27,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801024313]
[2023-11-29 05:37:27,034 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:27,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061404361]
[2023-11-29 05:37:27,035 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061404361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:27,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:27,036 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:27,036 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200316199]
[2023-11-29 05:37:27,036 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:27,041 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:27,041 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:27,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:27,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:27,047 INFO  L87              Difference]: Start difference. First operand 6142 states and 10247 transitions. Second operand  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 3 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:30,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:30,193 INFO  L93              Difference]: Finished difference Result 12346 states and 20602 transitions.
[2023-11-29 05:37:30,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:30,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 3 states have internal predecessors, (4021), 0 states have call successors, (0), 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 4021
[2023-11-29 05:37:30,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:30,203 INFO  L225             Difference]: With dead ends: 12346
[2023-11-29 05:37:30,203 INFO  L226             Difference]: Without dead ends: 6655
[2023-11-29 05:37:30,209 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4021 GetRequests, 4018 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 05:37:30,209 INFO  L413           NwaCegarLoop]: 8738 mSDtfsCounter, 18735 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18735 SdHoareTripleChecker+Valid, 9651 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:30,210 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18735 Valid, 9651 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 05:37:30,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6655 states.
[2023-11-29 05:37:30,268 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 6142.
[2023-11-29 05:37:30,274 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6684579058785214) internal successors, (10246), 6141 states have internal predecessors, (10246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:30,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10246 transitions.
[2023-11-29 05:37:30,281 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10246 transitions. Word has length 4021
[2023-11-29 05:37:30,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:30,283 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10246 transitions.
[2023-11-29 05:37:30,283 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 3 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:30,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10246 transitions.
[2023-11-29 05:37:30,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4023
[2023-11-29 05:37:30,359 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:30,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:30,407 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-29 05:37:30,562 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:30,563 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:30,563 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:30,565 INFO  L85        PathProgramCache]: Analyzing trace with hash -716977563, now seen corresponding path program 1 times
[2023-11-29 05:37:30,565 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:30,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414618344]
[2023-11-29 05:37:30,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:30,566 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:30,958 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:30,958 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939132947]
[2023-11-29 05:37:30,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:30,959 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:30,959 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:30,962 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:30,965 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 05:37:34,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:35,030 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17967 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:35,101 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:36,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:36,732 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:36,732 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:36,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414618344]
[2023-11-29 05:37:36,732 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:36,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939132947]
[2023-11-29 05:37:36,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [939132947] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:36,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:36,734 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:36,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497396563]
[2023-11-29 05:37:36,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:36,738 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:36,738 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:36,742 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:36,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:36,744 INFO  L87              Difference]: Start difference. First operand 6142 states and 10246 transitions. Second operand  has 4 states, 4 states have (on average 1005.5) internal successors, (4022), 3 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:39,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:39,920 INFO  L93              Difference]: Finished difference Result 12350 states and 20606 transitions.
[2023-11-29 05:37:39,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:39,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.5) internal successors, (4022), 3 states have internal predecessors, (4022), 0 states have call successors, (0), 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 4022
[2023-11-29 05:37:39,923 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:39,928 INFO  L225             Difference]: With dead ends: 12350
[2023-11-29 05:37:39,929 INFO  L226             Difference]: Without dead ends: 6659
[2023-11-29 05:37:39,933 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4022 GetRequests, 4019 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 05:37:39,934 INFO  L413           NwaCegarLoop]: 8742 mSDtfsCounter, 18730 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18730 SdHoareTripleChecker+Valid, 9660 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:39,934 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18730 Valid, 9660 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-11-29 05:37:39,942 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6659 states.
[2023-11-29 05:37:39,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6659 to 6142.
[2023-11-29 05:37:39,999 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.668295065950171) internal successors, (10245), 6141 states have internal predecessors, (10245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:40,006 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10245 transitions.
[2023-11-29 05:37:40,006 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10245 transitions. Word has length 4022
[2023-11-29 05:37:40,007 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:40,008 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10245 transitions.
[2023-11-29 05:37:40,009 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.5) internal successors, (4022), 3 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:40,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10245 transitions.
[2023-11-29 05:37:40,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4024
[2023-11-29 05:37:40,080 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:40,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:40,129 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 05:37:40,283 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:40,283 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:40,284 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:40,286 INFO  L85        PathProgramCache]: Analyzing trace with hash 212267179, now seen corresponding path program 1 times
[2023-11-29 05:37:40,286 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:40,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070889226]
[2023-11-29 05:37:40,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:40,287 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:40,625 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:40,625 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660107135]
[2023-11-29 05:37:40,626 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:40,626 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:40,627 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:40,628 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:40,630 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 05:37:44,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:44,508 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17968 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:44,556 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:46,015 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:46,016 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:46,016 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:46,016 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070889226]
[2023-11-29 05:37:46,016 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:46,016 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660107135]
[2023-11-29 05:37:46,016 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [660107135] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:46,016 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:46,017 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:46,017 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476583530]
[2023-11-29 05:37:46,017 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:46,020 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:46,020 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:46,023 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:46,023 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:46,024 INFO  L87              Difference]: Start difference. First operand 6142 states and 10245 transitions. Second operand  has 4 states, 4 states have (on average 1005.75) internal successors, (4023), 3 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:48,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:48,893 INFO  L93              Difference]: Finished difference Result 12357 states and 20615 transitions.
[2023-11-29 05:37:48,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:48,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.75) internal successors, (4023), 3 states have internal predecessors, (4023), 0 states have call successors, (0), 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 4023
[2023-11-29 05:37:48,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:48,902 INFO  L225             Difference]: With dead ends: 12357
[2023-11-29 05:37:48,902 INFO  L226             Difference]: Without dead ends: 6666
[2023-11-29 05:37:48,908 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4023 GetRequests, 4020 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 05:37:48,909 INFO  L413           NwaCegarLoop]: 8751 mSDtfsCounter, 18723 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18723 SdHoareTripleChecker+Valid, 9679 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:48,909 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18723 Valid, 9679 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2023-11-29 05:37:48,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6666 states.
[2023-11-29 05:37:48,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6142.
[2023-11-29 05:37:48,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6681322260218205) internal successors, (10244), 6141 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:48,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10244 transitions.
[2023-11-29 05:37:48,991 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10244 transitions. Word has length 4023
[2023-11-29 05:37:48,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:48,993 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10244 transitions.
[2023-11-29 05:37:48,994 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.75) internal successors, (4023), 3 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:48,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10244 transitions.
[2023-11-29 05:37:49,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4025
[2023-11-29 05:37:49,065 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:49,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:49,109 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-29 05:37:49,268 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-29 05:37:49,268 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:49,269 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:49,271 INFO  L85        PathProgramCache]: Analyzing trace with hash 843371764, now seen corresponding path program 1 times
[2023-11-29 05:37:49,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:49,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327732359]
[2023-11-29 05:37:49,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:49,272 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:49,577 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:49,577 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437386589]
[2023-11-29 05:37:49,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:49,578 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:49,578 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:49,579 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:49,580 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 05:37:53,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:37:53,380 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17969 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:37:53,429 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:37:55,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:37:55,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:37:55,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:37:55,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327732359]
[2023-11-29 05:37:55,303 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:37:55,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437386589]
[2023-11-29 05:37:55,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [437386589] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:37:55,303 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:37:55,304 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:37:55,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811504169]
[2023-11-29 05:37:55,304 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:37:55,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:37:55,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:37:55,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:37:55,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:37:55,312 INFO  L87              Difference]: Start difference. First operand 6142 states and 10244 transitions. Second operand  has 4 states, 4 states have (on average 1006.0) internal successors, (4024), 3 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:58,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:37:58,357 INFO  L93              Difference]: Finished difference Result 12361 states and 20619 transitions.
[2023-11-29 05:37:58,357 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:37:58,358 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1006.0) internal successors, (4024), 3 states have internal predecessors, (4024), 0 states have call successors, (0), 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 4024
[2023-11-29 05:37:58,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:37:58,362 INFO  L225             Difference]: With dead ends: 12361
[2023-11-29 05:37:58,362 INFO  L226             Difference]: Without dead ends: 6670
[2023-11-29 05:37:58,365 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4024 GetRequests, 4021 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 05:37:58,366 INFO  L413           NwaCegarLoop]: 8755 mSDtfsCounter, 18718 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18718 SdHoareTripleChecker+Valid, 9688 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2023-11-29 05:37:58,366 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18718 Valid, 9688 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2023-11-29 05:37:58,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6670 states.
[2023-11-29 05:37:58,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 6142.
[2023-11-29 05:37:58,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6679693860934701) internal successors, (10243), 6141 states have internal predecessors, (10243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:58,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10243 transitions.
[2023-11-29 05:37:58,426 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10243 transitions. Word has length 4024
[2023-11-29 05:37:58,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:37:58,427 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10243 transitions.
[2023-11-29 05:37:58,428 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1006.0) internal successors, (4024), 3 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:37:58,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10243 transitions.
[2023-11-29 05:37:58,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4026
[2023-11-29 05:37:58,498 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:37:58,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:37:58,553 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-29 05:37:58,701 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 05:37:58,701 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:37:58,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:37:58,703 INFO  L85        PathProgramCache]: Analyzing trace with hash -312881344, now seen corresponding path program 1 times
[2023-11-29 05:37:58,703 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:37:58,703 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069744315]
[2023-11-29 05:37:58,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:58,703 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:37:59,026 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:37:59,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283813240]
[2023-11-29 05:37:59,027 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:37:59,027 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:37:59,027 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:37:59,028 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:37:59,029 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 05:38:02,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:38:02,955 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17970 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:38:03,005 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:38:04,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:38:04,455 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:38:04,455 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:38:04,455 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069744315]
[2023-11-29 05:38:04,455 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:38:04,455 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283813240]
[2023-11-29 05:38:04,455 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [283813240] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:38:04,455 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:38:04,456 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:38:04,456 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267933443]
[2023-11-29 05:38:04,456 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:38:04,459 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:38:04,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:38:04,462 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:38:04,462 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:38:04,463 INFO  L87              Difference]: Start difference. First operand 6142 states and 10243 transitions. Second operand  has 4 states, 4 states have (on average 1006.25) internal successors, (4025), 3 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:38:07,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:38:07,737 INFO  L93              Difference]: Finished difference Result 12368 states and 20628 transitions.
[2023-11-29 05:38:07,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:38:07,739 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1006.25) internal successors, (4025), 3 states have internal predecessors, (4025), 0 states have call successors, (0), 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 4025
[2023-11-29 05:38:07,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:38:07,744 INFO  L225             Difference]: With dead ends: 12368
[2023-11-29 05:38:07,744 INFO  L226             Difference]: Without dead ends: 6677
[2023-11-29 05:38:07,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4025 GetRequests, 4022 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 05:38:07,748 INFO  L413           NwaCegarLoop]: 8764 mSDtfsCounter, 18711 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18711 SdHoareTripleChecker+Valid, 9707 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:38:07,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18711 Valid, 9707 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-11-29 05:38:07,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6677 states.
[2023-11-29 05:38:07,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6142.
[2023-11-29 05:38:07,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6678065461651197) internal successors, (10242), 6141 states have internal predecessors, (10242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:38:07,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10242 transitions.
[2023-11-29 05:38:07,816 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10242 transitions. Word has length 4025
[2023-11-29 05:38:07,817 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:38:07,818 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10242 transitions.
[2023-11-29 05:38:07,819 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1006.25) internal successors, (4025), 3 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:38:07,819 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10242 transitions.
[2023-11-29 05:38:07,904 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2023-11-29 05:38:07,904 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:38:07,906 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:38:07,950 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 05:38:08,106 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 05:38:08,107 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:38:08,107 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:38:08,109 INFO  L85        PathProgramCache]: Analyzing trace with hash 957196163, now seen corresponding path program 1 times
[2023-11-29 05:38:08,109 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:38:08,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972252028]
[2023-11-29 05:38:08,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:38:08,110 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:38:08,423 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 05:38:08,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235288837]
[2023-11-29 05:38:08,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:38:08,424 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:38:08,424 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:38:08,425 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:38:08,426 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 05:38:12,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:38:12,748 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17971 conjuncts, 168 conjunts are in the unsatisfiable core
[2023-11-29 05:38:12,834 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:38:34,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:38:34,691 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:39:19,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:39:19,612 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:39:19,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972252028]
[2023-11-29 05:39:19,612 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 05:39:19,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235288837]
[2023-11-29 05:39:19,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [235288837] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 05:39:19,613 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 05:39:19,614 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 37] total 102
[2023-11-29 05:39:19,614 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134878368]
[2023-11-29 05:39:19,614 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 05:39:19,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2023-11-29 05:39:19,620 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:39:19,626 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2023-11-29 05:39:19,628 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=9433, Unknown=0, NotChecked=0, Total=10302
[2023-11-29 05:39:19,630 INFO  L87              Difference]: Start difference. First operand 6142 states and 10242 transitions. Second operand  has 102 states, 102 states have (on average 78.84313725490196) internal successors, (8042), 102 states have internal predecessors, (8042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:46:04,219 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101
[2023-11-29 05:46:04,219 WARN  L249               Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")

[2023-11-29 05:46:04,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 915 states. 
[2023-11-29 05:46:04,269 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8956 GetRequests, 7950 SyntacticMatches, 0 SemanticMatches, 1005 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410083 ImplicationChecksByTransitivity, 258.5s TimeCoverageRelationStatistics Valid=90609, Invalid=922433, Unknown=0, NotChecked=0, Total=1013042
[2023-11-29 05:46:04,269 INFO  L413           NwaCegarLoop]: 21402 mSDtfsCounter, 493744 mSDsluCounter, 1099580 mSDsCounter, 0 mSdLazyCounter, 159323 mSolverCounterSat, 1304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493744 SdHoareTripleChecker+Valid, 1120982 SdHoareTripleChecker+Invalid, 160627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.5s SdHoareTripleChecker+Time, 1304 IncrementalHoareTripleChecker+Valid, 159323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.4s IncrementalHoareTripleChecker+Time
[2023-11-29 05:46:04,270 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [493744 Valid, 1120982 Invalid, 160627 Unknown, 0 Unchecked, 4.5s Time], IncrementalHoareTripleChecker [1304 Valid, 159323 Invalid, 0 Unknown, 0 Unchecked, 116.4s Time]
[2023-11-29 05:46:04,321 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 05:46:04,470 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 05:46:04,471 FATAL L?                        ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")

	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.<init>(PredicateUnifier.java:789)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.<init>(NestedWordAutomatonReachableStates.java:960)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.<init>(NestedWordAutomatonReachableStates.java:182)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.<init>(Difference.java:90)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
	at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
	... 47 more
[2023-11-29 05:46:04,473 INFO  L158              Benchmark]: Toolchain (without parser) took 582567.41ms. Allocated memory was 144.7MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 105.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,473 INFO  L158              Benchmark]: CDTParser took 0.17ms. Allocated memory is still 144.7MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-29 05:46:04,474 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1714.88ms. Allocated memory was 144.7MB in the beginning and 285.2MB in the end (delta: 140.5MB). Free memory was 105.1MB in the beginning and 141.9MB in the end (delta: -36.8MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,474 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2014.42ms. Allocated memory was 285.2MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 141.9MB in the beginning and 976.5MB in the end (delta: -834.7MB). Peak memory consumption was 314.6MB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,474 INFO  L158              Benchmark]: Boogie Preprocessor took 2126.13ms. Allocated memory is still 1.4GB. Free memory was 975.5MB in the beginning and 851.8MB in the end (delta: 123.7MB). Peak memory consumption was 208.7MB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,474 INFO  L158              Benchmark]: RCFGBuilder took 14254.67ms. Allocated memory was 1.4GB in the beginning and 4.2GB in the end (delta: 2.8GB). Free memory was 851.8MB in the beginning and 3.0GB in the end (delta: -2.2GB). Peak memory consumption was 565.9MB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,475 INFO  L158              Benchmark]: TraceAbstraction took 562450.14ms. Allocated memory is still 4.2GB. Free memory was 3.0GB in the beginning and 2.3GB in the end (delta: 724.3MB). Peak memory consumption was 726.4MB. Max. memory is 16.1GB.
[2023-11-29 05:46:04,476 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.17ms. Allocated memory is still 144.7MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1714.88ms. Allocated memory was 144.7MB in the beginning and 285.2MB in the end (delta: 140.5MB). Free memory was 105.1MB in the beginning and 141.9MB in the end (delta: -36.8MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 2014.42ms. Allocated memory was 285.2MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 141.9MB in the beginning and 976.5MB in the end (delta: -834.7MB). Peak memory consumption was 314.6MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 2126.13ms. Allocated memory is still 1.4GB. Free memory was 975.5MB in the beginning and 851.8MB in the end (delta: 123.7MB). Peak memory consumption was 208.7MB. Max. memory is 16.1GB.
 * RCFGBuilder took 14254.67ms. Allocated memory was 1.4GB in the beginning and 4.2GB in the end (delta: 2.8GB). Free memory was 851.8MB in the beginning and 3.0GB in the end (delta: -2.2GB). Peak memory consumption was 565.9MB. Max. memory is 16.1GB.
 * TraceAbstraction took 562450.14ms. Allocated memory is still 4.2GB. Free memory was 3.0GB in the beginning and 2.3GB in the end (delta: 724.3MB). Peak memory consumption was 726.4MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")

    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis

### Bit-precise run ###
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_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/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_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/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 af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:46:06,345 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:46:06,411 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2023-11-29 05:46:06,429 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:46:06,429 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:46:06,458 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:46:06,458 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:46:06,459 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:46:06,460 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:46:06,460 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:46:06,461 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:46:06,461 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:46:06,462 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:46:06,463 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:46:06,463 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:46:06,464 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:46:06,465 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:46:06,465 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:46:06,466 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:46:06,466 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:46:06,467 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:46:06,468 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-29 05:46:06,469 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-29 05:46:06,469 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-29 05:46:06,469 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:46:06,470 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:46:06,470 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:46:06,471 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:46:06,471 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:46:06,471 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:46:06,472 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:46:06,472 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:46:06,473 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:46:06,473 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:46:06,473 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-11-29 05:46:06,473 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2023-11-29 05:46:06,474 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:46:06,474 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:46:06,474 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:46:06,474 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:46:06,475 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:46:06,475 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-11-29 05:46:06,475 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/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_61446d6e-5f07-4fca-a442-b9f1c5da0921/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 -> af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
[2023-11-29 05:46:06,779 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:46:06,800 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:46:06,803 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:46:06,804 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:46:06,804 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:46:06,806 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:46:09,579 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:46:09,988 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:46:09,989 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:46:10,029 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/35379cabf/652db6d9f52b4481b631783f168dfec9/FLAGacc4f5ba3
[2023-11-29 05:46:10,044 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/data/35379cabf/652db6d9f52b4481b631783f168dfec9
[2023-11-29 05:46:10,046 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:46:10,048 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:46:10,049 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:46:10,049 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:46:10,054 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:46:10,055 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:46:10" (1/1) ...
[2023-11-29 05:46:10,055 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10856509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:10, skipping insertion in model container
[2023-11-29 05:46:10,056 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:46:10" (1/1) ...
[2023-11-29 05:46:10,192 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:46:10,429 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2023-11-29 05:46:10,982 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:46:11,013 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:46:11,024 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_61446d6e-5f07-4fca-a442-b9f1c5da0921/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2023-11-29 05:46:11,364 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:46:11,379 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:46:11,380 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11 WrapperNode
[2023-11-29 05:46:11,380 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:46:11,381 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:46:11,381 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:46:11,381 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:46:11,388 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,463 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,729 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6442
[2023-11-29 05:46:11,729 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:46:11,730 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:46:11,730 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:46:11,730 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:46:11,742 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,742 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,777 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,869 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 05:46:11,869 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:11,869 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,000 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,023 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,054 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,086 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,118 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:46:12,119 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:46:12,119 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:46:12,119 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:46:12,120 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (1/1) ...
[2023-11-29 05:46:12,124 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:46:12,136 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:46:12,149 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:46:12,156 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:46:12,185 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:46:12,186 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-11-29 05:46:12,186 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:46:12,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:46:13,028 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:46:13,030 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:46:30,017 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:46:30,250 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:46:30,250 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:46:30,251 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:46:30 BoogieIcfgContainer
[2023-11-29 05:46:30,251 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:46:30,253 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:46:30,254 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:46:30,257 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:46:30,257 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:46:10" (1/3) ...
[2023-11-29 05:46:30,258 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7e4c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:46:30, skipping insertion in model container
[2023-11-29 05:46:30,258 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:46:11" (2/3) ...
[2023-11-29 05:46:30,258 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7e4c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:46:30, skipping insertion in model container
[2023-11-29 05:46:30,258 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:46:30" (3/3) ...
[2023-11-29 05:46:30,260 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2023-11-29 05:46:30,278 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:46:30,278 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:46:30,323 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:46:30,330 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;@4920b3ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:46:30,330 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:46:30,334 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:46:30,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-29 05:46:30,340 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:46:30,340 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-29 05:46:30,341 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:46:30,346 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:46:30,346 INFO  L85        PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times
[2023-11-29 05:46:30,359 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 05:46:30,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511940312]
[2023-11-29 05:46:30,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:46:30,360 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 05:46:30,360 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 05:46:30,361 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 05:46:30,364 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-29 05:46:31,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:46:31,338 INFO  L262         TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 05:46:31,368 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:46:31,502 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 05:46:31,502 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 05:46:31,503 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-29 05:46:31,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511940312]
[2023-11-29 05:46:31,504 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511940312] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:46:31,504 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:46:31,504 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 05:46:31,506 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111875272]
[2023-11-29 05:46:31,506 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:46:31,510 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:46:31,510 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-29 05:46:31,537 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:46:31,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:46:31,539 INFO  L87              Difference]: Start difference. First operand  has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:46:36,162 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 05:46:36,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:46:36,747 INFO  L93              Difference]: Finished difference Result 16 states and 24 transitions.
[2023-11-29 05:46:36,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:46:36,749 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4
[2023-11-29 05:46:36,750 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:46:36,755 INFO  L225             Difference]: With dead ends: 16
[2023-11-29 05:46:36,755 INFO  L226             Difference]: Without dead ends: 9
[2023-11-29 05:46:36,756 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:46:36,759 INFO  L413           NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-11-29 05:46:36,760 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time]
[2023-11-29 05:46:36,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2023-11-29 05:46:36,779 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8.
[2023-11-29 05:46:36,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:46:36,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2023-11-29 05:46:36,781 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4
[2023-11-29 05:46:36,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:46:36,781 INFO  L495      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2023-11-29 05:46:36,782 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:46:36,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2023-11-29 05:46:36,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-29 05:46:36,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:46:36,782 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1]
[2023-11-29 05:46:36,787 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-29 05:46:36,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 05:46:36,983 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:46:36,983 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:46:36,984 INFO  L85        PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times
[2023-11-29 05:46:36,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 05:46:36,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843310571]
[2023-11-29 05:46:36,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:46:36,990 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 05:46:36,990 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 05:46:36,991 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 05:46:37,004 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-29 05:46:46,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:46:46,469 INFO  L262         TraceCheckSpWp]: Trace formula consists of 5427 conjuncts, 248 conjunts are in the unsatisfiable core
[2023-11-29 05:46:46,560 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:46:52,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:46:52,669 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 05:47:00,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:47:00,481 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-29 05:47:00,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843310571]
[2023-11-29 05:47:00,481 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843310571] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 05:47:00,481 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 05:47:00,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2023-11-29 05:47:00,482 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307210978]
[2023-11-29 05:47:00,482 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 05:47:00,483 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 05:47:00,483 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-29 05:47:00,484 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 05:47:00,484 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:47:00,484 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:12,624 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 05:47:23,419 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 05:47:27,780 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 05:47:32,385 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 05:47:36,467 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 05:47:36,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:47:36,468 INFO  L93              Difference]: Finished difference Result 14 states and 14 transitions.
[2023-11-29 05:47:36,562 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 05:47:36,562 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 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 7
[2023-11-29 05:47:36,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:47:36,563 INFO  L225             Difference]: With dead ends: 14
[2023-11-29 05:47:36,563 INFO  L226             Difference]: Without dead ends: 12
[2023-11-29 05:47:36,564 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2023-11-29 05:47:36,565 INFO  L413           NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:47:36,565 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 26.3s Time]
[2023-11-29 05:47:36,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2023-11-29 05:47:36,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11.
[2023-11-29 05:47:36,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:36,571 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2023-11-29 05:47:36,571 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7
[2023-11-29 05:47:36,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:47:36,571 INFO  L495      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2023-11-29 05:47:36,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:47:36,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2023-11-29 05:47:36,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-29 05:47:36,572 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:47:36,572 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1]
[2023-11-29 05:47:36,618 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2023-11-29 05:47:36,772 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 05:47:36,772 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:47:36,773 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:47:36,773 INFO  L85        PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times
[2023-11-29 05:47:36,780 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 05:47:36,780 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602092954]
[2023-11-29 05:47:36,780 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-29 05:47:36,781 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 05:47:36,781 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 05:47:36,782 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 05:47:36,783 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61446d6e-5f07-4fca-a442-b9f1c5da0921/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-11-29 05:48:01,207 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-29 05:48:01,207 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-29 05:48:01,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10586 conjuncts, 531 conjunts are in the unsatisfiable core
[2023-11-29 05:48:01,616 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 05:48:49,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:48:49,414 INFO  L327         TraceCheckSpWp]: Computing backward predicates...