./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/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 1ec977caa7d62404913c11550b4c63cfa13eb9fd456dca7a8c2f1cb44a89af7b
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 01:42:31,517 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 01:42:31,586 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 01:42:31,592 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 01:42:31,592 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 01:42:31,617 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 01:42:31,618 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 01:42:31,619 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 01:42:31,619 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 01:42:31,620 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 01:42:31,621 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 01:42:31,621 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 01:42:31,622 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 01:42:31,622 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 01:42:31,623 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 01:42:31,623 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 01:42:31,624 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 01:42:31,624 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 01:42:31,625 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 01:42:31,625 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 01:42:31,626 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 01:42:31,629 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 01:42:31,629 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 01:42:31,630 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 01:42:31,630 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 01:42:31,631 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 01:42:31,631 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 01:42:31,631 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 01:42:31,632 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 01:42:31,632 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 01:42:31,632 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 01:42:31,633 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 01:42:31,633 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 01:42:31,633 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 01:42:31,634 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 01:42:31,634 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 01:42:31,634 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 01:42:31,634 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 01:42:31,634 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 01:42:31,635 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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/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 -> 1ec977caa7d62404913c11550b4c63cfa13eb9fd456dca7a8c2f1cb44a89af7b
[2023-11-29 01:42:31,862 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 01:42:31,883 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 01:42:31,886 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 01:42:31,887 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 01:42:31,887 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 01:42:31,889 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c
[2023-11-29 01:42:34,665 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 01:42:35,016 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 01:42:35,016 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c
[2023-11-29 01:42:35,040 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/data/cb19d0ea0/9a6b411391954435a9a09a0ad4529974/FLAG35bb64fda
[2023-11-29 01:42:35,054 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/data/cb19d0ea0/9a6b411391954435a9a09a0ad4529974
[2023-11-29 01:42:35,057 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 01:42:35,059 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 01:42:35,060 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 01:42:35,060 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 01:42:35,066 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 01:42:35,066 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:42:35" (1/1) ...
[2023-11-29 01:42:35,067 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3b114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:35, skipping insertion in model container
[2023-11-29 01:42:35,068 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:42:35" (1/1) ...
[2023-11-29 01:42:35,196 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 01:42:35,383 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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c[1173,1186]
[2023-11-29 01:42:36,000 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 01:42:36,010 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 01:42:36,022 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_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-func-interl.c[1173,1186]
[2023-11-29 01:42:36,463 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 01:42:36,477 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 01:42:36,477 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36 WrapperNode
[2023-11-29 01:42:36,477 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 01:42:36,478 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 01:42:36,478 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 01:42:36,479 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 01:42:36,486 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:36,605 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:38,263 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20350
[2023-11-29 01:42:38,264 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 01:42:38,265 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 01:42:38,265 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 01:42:38,265 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 01:42:38,276 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:38,276 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:38,533 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:38,757 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 01:42:38,758 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:38,758 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,075 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,167 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,256 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,327 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,568 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 01:42:39,569 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 01:42:39,569 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 01:42:39,569 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 01:42:39,570 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (1/1) ...
[2023-11-29 01:42:39,576 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 01:42:39,586 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 01:42:39,600 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 01:42:39,602 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 01:42:39,624 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 01:42:39,624 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 01:42:39,624 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 01:42:39,624 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 01:42:40,538 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 01:42:40,540 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 01:42:51,350 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 01:42:51,612 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 01:42:51,612 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 01:42:51,614 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:42:51 BoogieIcfgContainer
[2023-11-29 01:42:51,614 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 01:42:51,617 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 01:42:51,617 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 01:42:51,620 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 01:42:51,620 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:42:35" (1/3) ...
[2023-11-29 01:42:51,621 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6882a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:42:51, skipping insertion in model container
[2023-11-29 01:42:51,621 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:36" (2/3) ...
[2023-11-29 01:42:51,622 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6882a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:42:51, skipping insertion in model container
[2023-11-29 01:42:51,622 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:42:51" (3/3) ...
[2023-11-29 01:42:51,623 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bridge.3.prop1-func-interl.c
[2023-11-29 01:42:51,639 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 01:42:51,639 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 01:42:51,755 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 01:42:51,761 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;@6ea716cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 01:42:51,762 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 01:42:51,782 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4634 states, 4632 states have (on average 1.6666666666666667) internal successors, (7720), 4633 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:51,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 239
[2023-11-29 01:42:51,801 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:42:51,802 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]
[2023-11-29 01:42:51,803 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:42:51,807 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:42:51,808 INFO  L85        PathProgramCache]: Analyzing trace with hash -1722934392, now seen corresponding path program 1 times
[2023-11-29 01:42:51,816 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:42:51,816 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449115908]
[2023-11-29 01:42:51,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:42:51,817 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:42:52,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:42:52,908 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 01:42:52,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:42:52,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449115908]
[2023-11-29 01:42:52,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449115908] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:42:52,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:42:52,910 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 01:42:52,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893431132]
[2023-11-29 01:42:52,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:42:52,916 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 01:42:52,916 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:42:52,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 01:42:52,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 01:42:52,957 INFO  L87              Difference]: Start difference. First operand  has 4634 states, 4632 states have (on average 1.6666666666666667) internal successors, (7720), 4633 states have internal predecessors, (7720), 0 states have call successors, (0), 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 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:53,234 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:42:53,234 INFO  L93              Difference]: Finished difference Result 9141 states and 15231 transitions.
[2023-11-29 01:42:53,235 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 01:42:53,236 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238
[2023-11-29 01:42:53,238 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:42:53,275 INFO  L225             Difference]: With dead ends: 9141
[2023-11-29 01:42:53,275 INFO  L226             Difference]: Without dead ends: 4634
[2023-11-29 01:42:53,286 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 01:42:53,289 INFO  L413           NwaCegarLoop]: 7713 mSDtfsCounter, 1 mSDsluCounter, 15421 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23134 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 01:42:53,290 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23134 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 01:42:53,314 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4634 states.
[2023-11-29 01:42:53,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4634.
[2023-11-29 01:42:53,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4634 states, 4633 states have (on average 1.6658752428232246) internal successors, (7718), 4633 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:53,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 7718 transitions.
[2023-11-29 01:42:53,459 INFO  L78                 Accepts]: Start accepts. Automaton has 4634 states and 7718 transitions. Word has length 238
[2023-11-29 01:42:53,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:42:53,461 INFO  L495      AbstractCegarLoop]: Abstraction has 4634 states and 7718 transitions.
[2023-11-29 01:42:53,462 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:53,462 INFO  L276                IsEmpty]: Start isEmpty. Operand 4634 states and 7718 transitions.
[2023-11-29 01:42:53,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 240
[2023-11-29 01:42:53,469 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:42:53,470 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]
[2023-11-29 01:42:53,470 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 01:42:53,470 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:42:53,471 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:42:53,471 INFO  L85        PathProgramCache]: Analyzing trace with hash -1869632248, now seen corresponding path program 1 times
[2023-11-29 01:42:53,471 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:42:53,471 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263871970]
[2023-11-29 01:42:53,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:42:53,472 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:42:53,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:42:54,082 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 01:42:54,083 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:42:54,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263871970]
[2023-11-29 01:42:54,083 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263871970] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:42:54,084 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:42:54,084 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 01:42:54,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615315453]
[2023-11-29 01:42:54,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:42:54,086 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 01:42:54,087 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:42:54,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 01:42:54,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 01:42:54,089 INFO  L87              Difference]: Start difference. First operand 4634 states and 7718 transitions. Second operand  has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:54,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:42:54,290 INFO  L93              Difference]: Finished difference Result 9144 states and 15229 transitions.
[2023-11-29 01:42:54,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 01:42:54,291 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239
[2023-11-29 01:42:54,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:42:54,314 INFO  L225             Difference]: With dead ends: 9144
[2023-11-29 01:42:54,314 INFO  L226             Difference]: Without dead ends: 4637
[2023-11-29 01:42:54,319 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 01:42:54,320 INFO  L413           NwaCegarLoop]: 7713 mSDtfsCounter, 1 mSDsluCounter, 15419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23132 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 01:42:54,320 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23132 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 01:42:54,329 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4637 states.
[2023-11-29 01:42:54,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 4636.
[2023-11-29 01:42:54,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4636 states, 4635 states have (on average 1.6655879180151025) internal successors, (7720), 4635 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:54,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 7720 transitions.
[2023-11-29 01:42:54,426 INFO  L78                 Accepts]: Start accepts. Automaton has 4636 states and 7720 transitions. Word has length 239
[2023-11-29 01:42:54,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:42:54,427 INFO  L495      AbstractCegarLoop]: Abstraction has 4636 states and 7720 transitions.
[2023-11-29 01:42:54,427 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:54,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 4636 states and 7720 transitions.
[2023-11-29 01:42:54,432 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 241
[2023-11-29 01:42:54,432 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:42:54,432 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]
[2023-11-29 01:42:54,433 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 01:42:54,433 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:42:54,433 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:42:54,434 INFO  L85        PathProgramCache]: Analyzing trace with hash 1960511394, now seen corresponding path program 1 times
[2023-11-29 01:42:54,434 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:42:54,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30784013]
[2023-11-29 01:42:54,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:42:54,435 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:42:54,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:42:54,904 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 01:42:54,904 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:42:54,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30784013]
[2023-11-29 01:42:54,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30784013] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:42:54,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:42:54,905 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:42:54,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570143963]
[2023-11-29 01:42:54,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:42:54,907 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 01:42:54,907 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:42:54,908 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 01:42:54,908 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 01:42:54,909 INFO  L87              Difference]: Start difference. First operand 4636 states and 7720 transitions. Second operand  has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:55,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:42:55,244 INFO  L93              Difference]: Finished difference Result 13644 states and 22723 transitions.
[2023-11-29 01:42:55,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 01:42:55,245 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 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 240
[2023-11-29 01:42:55,245 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:42:55,283 INFO  L225             Difference]: With dead ends: 13644
[2023-11-29 01:42:55,283 INFO  L226             Difference]: Without dead ends: 9135
[2023-11-29 01:42:55,290 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 01:42:55,292 INFO  L413           NwaCegarLoop]: 8074 mSDtfsCounter, 7491 mSDsluCounter, 23266 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7491 SdHoareTripleChecker+Valid, 31340 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 01:42:55,293 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7491 Valid, 31340 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 01:42:55,306 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9135 states.
[2023-11-29 01:42:55,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 4638.
[2023-11-29 01:42:55,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4638 states, 4637 states have (on average 1.6653008410610308) internal successors, (7722), 4637 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:55,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7722 transitions.
[2023-11-29 01:42:55,427 INFO  L78                 Accepts]: Start accepts. Automaton has 4638 states and 7722 transitions. Word has length 240
[2023-11-29 01:42:55,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:42:55,427 INFO  L495      AbstractCegarLoop]: Abstraction has 4638 states and 7722 transitions.
[2023-11-29 01:42:55,428 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:55,429 INFO  L276                IsEmpty]: Start isEmpty. Operand 4638 states and 7722 transitions.
[2023-11-29 01:42:55,433 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2023-11-29 01:42:55,433 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:42:55,434 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]
[2023-11-29 01:42:55,434 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 01:42:55,434 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:42:55,435 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:42:55,435 INFO  L85        PathProgramCache]: Analyzing trace with hash -2048748050, now seen corresponding path program 1 times
[2023-11-29 01:42:55,435 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:42:55,436 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660258281]
[2023-11-29 01:42:55,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:42:55,436 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:42:55,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:42:56,456 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 01:42:56,457 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:42:56,457 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660258281]
[2023-11-29 01:42:56,457 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660258281] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:42:56,457 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:42:56,458 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:42:56,458 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917243293]
[2023-11-29 01:42:56,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:42:56,459 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:42:56,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:42:56,460 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:42:56,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:42:56,461 INFO  L87              Difference]: Start difference. First operand 4638 states and 7722 transitions. Second operand  has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:57,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:42:57,304 INFO  L93              Difference]: Finished difference Result 13873 states and 23100 transitions.
[2023-11-29 01:42:57,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-29 01:42:57,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 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 241
[2023-11-29 01:42:57,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:42:57,347 INFO  L225             Difference]: With dead ends: 13873
[2023-11-29 01:42:57,347 INFO  L226             Difference]: Without dead ends: 9362
[2023-11-29 01:42:57,355 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-11-29 01:42:57,357 INFO  L413           NwaCegarLoop]: 8074 mSDtfsCounter, 37837 mSDsluCounter, 23129 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37837 SdHoareTripleChecker+Valid, 31203 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-29 01:42:57,357 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37837 Valid, 31203 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-29 01:42:57,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9362 states.
[2023-11-29 01:42:57,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 4857.
[2023-11-29 01:42:57,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4857 states, 4856 states have (on average 1.665362438220758) internal successors, (8087), 4856 states have internal predecessors, (8087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:57,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 8087 transitions.
[2023-11-29 01:42:57,497 INFO  L78                 Accepts]: Start accepts. Automaton has 4857 states and 8087 transitions. Word has length 241
[2023-11-29 01:42:57,498 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:42:57,498 INFO  L495      AbstractCegarLoop]: Abstraction has 4857 states and 8087 transitions.
[2023-11-29 01:42:57,498 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:42:57,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 4857 states and 8087 transitions.
[2023-11-29 01:42:57,724 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3245
[2023-11-29 01:42:57,724 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:42:57,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 01:42:57,727 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 01:42:57,727 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:42:57,728 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:42:57,729 INFO  L85        PathProgramCache]: Analyzing trace with hash -1044097136, now seen corresponding path program 1 times
[2023-11-29 01:42:57,729 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:42:57,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41310607]
[2023-11-29 01:42:57,730 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:42:57,730 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:43:19,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:43:28,910 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:43:28,910 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:43:28,910 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41310607]
[2023-11-29 01:43:28,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41310607] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-29 01:43:28,911 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189179461]
[2023-11-29 01:43:28,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:43:28,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 01:43:28,912 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 01:43:28,916 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 01:43:28,922 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 01:43:33,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:43:33,258 INFO  L262         TraceCheckSpWp]: Trace formula consists of 14093 conjuncts, 53 conjunts are in the unsatisfiable core
[2023-11-29 01:43:33,350 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 01:43:52,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:43:52,960 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 01:44:11,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 134 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:44:11,897 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189179461] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 01:44:11,897 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-29 01:44:11,899 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 18, 13] total 32
[2023-11-29 01:44:11,899 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913481655]
[2023-11-29 01:44:11,899 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-29 01:44:11,907 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2023-11-29 01:44:11,908 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:44:11,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2023-11-29 01:44:11,914 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992
[2023-11-29 01:44:11,917 INFO  L87              Difference]: Start difference. First operand 4857 states and 8087 transitions. Second operand  has 32 states, 32 states have (on average 241.84375) internal successors, (7739), 32 states have internal predecessors, (7739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:44:20,023 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:24,932 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:28,939 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:32,948 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:38,125 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:42,134 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:43,179 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:47,598 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:52,976 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:56,988 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:44:59,336 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:45:02,175 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:46:23,536 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:46:26,754 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:47:14,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:47:14,633 INFO  L93              Difference]: Finished difference Result 181453 states and 301482 transitions.
[2023-11-29 01:47:14,634 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. 
[2023-11-29 01:47:14,635 INFO  L78                 Accepts]: Start accepts. Automaton has  has 32 states, 32 states have (on average 241.84375) internal successors, (7739), 32 states have internal predecessors, (7739), 0 states have call successors, (0), 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 3244
[2023-11-29 01:47:14,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:47:14,874 INFO  L225             Difference]: With dead ends: 181453
[2023-11-29 01:47:14,875 INFO  L226             Difference]: Without dead ends: 151428
[2023-11-29 01:47:14,920 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6620 GetRequests, 6484 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6607 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3264, Invalid=15096, Unknown=0, NotChecked=0, Total=18360
[2023-11-29 01:47:14,921 INFO  L413           NwaCegarLoop]: 6725 mSDtfsCounter, 681070 mSDsluCounter, 277083 mSDsCounter, 0 mSdLazyCounter, 109975 mSolverCounterSat, 2441 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681070 SdHoareTripleChecker+Valid, 283808 SdHoareTripleChecker+Invalid, 112425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.9s SdHoareTripleChecker+Time, 2441 IncrementalHoareTripleChecker+Valid, 109975 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.5s IncrementalHoareTripleChecker+Time
[2023-11-29 01:47:14,922 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [681070 Valid, 283808 Invalid, 112425 Unknown, 0 Unchecked, 1.9s Time], IncrementalHoareTripleChecker [2441 Valid, 109975 Invalid, 9 Unknown, 0 Unchecked, 150.5s Time]
[2023-11-29 01:47:15,036 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151428 states.
[2023-11-29 01:47:16,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151428 to 10932.
[2023-11-29 01:47:16,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10932 states, 10931 states have (on average 1.6645320647699204) internal successors, (18195), 10931 states have internal predecessors, (18195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:47:16,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 18195 transitions.
[2023-11-29 01:47:16,250 INFO  L78                 Accepts]: Start accepts. Automaton has 10932 states and 18195 transitions. Word has length 3244
[2023-11-29 01:47:16,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:47:16,251 INFO  L495      AbstractCegarLoop]: Abstraction has 10932 states and 18195 transitions.
[2023-11-29 01:47:16,253 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 32 states, 32 states have (on average 241.84375) internal successors, (7739), 32 states have internal predecessors, (7739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:47:16,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 10932 states and 18195 transitions.
[2023-11-29 01:47:16,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3247
[2023-11-29 01:47:16,344 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:47:16,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:16,388 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 01:47:16,547 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38958c6-dd8d-4bbc-98ff-a9eef1edfe03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 01:47:16,548 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:47:16,548 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:47:16,549 INFO  L85        PathProgramCache]: Analyzing trace with hash 730463190, now seen corresponding path program 1 times
[2023-11-29 01:47:16,550 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:47:16,550 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13788353]
[2023-11-29 01:47:16,550 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:47:16,550 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:47:34,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:47:41,568 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:47:41,569 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:47:41,569 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13788353]
[2023-11-29 01:47:41,569 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13788353] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:47:41,569 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:47:41,569 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:47:41,570 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806353623]
[2023-11-29 01:47:41,570 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:47:41,573 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:47:41,573 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:47:41,577 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:47:41,577 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:47:41,579 INFO  L87              Difference]: Start difference. First operand 10932 states and 18195 transitions. Second operand  has 6 states, 6 states have (on average 541.0) internal successors, (3246), 5 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:47:44,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:47:44,714 INFO  L93              Difference]: Finished difference Result 28558 states and 47521 transitions.
[2023-11-29 01:47:44,714 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:47:44,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.0) internal successors, (3246), 5 states have internal predecessors, (3246), 0 states have call successors, (0), 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 3246
[2023-11-29 01:47:44,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:47:44,728 INFO  L225             Difference]: With dead ends: 28558
[2023-11-29 01:47:44,728 INFO  L226             Difference]: Without dead ends: 18255
[2023-11-29 01:47:44,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2023-11-29 01:47:44,738 INFO  L413           NwaCegarLoop]: 6233 mSDtfsCounter, 29837 mSDsluCounter, 13556 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29837 SdHoareTripleChecker+Valid, 19789 SdHoareTripleChecker+Invalid, 3635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2023-11-29 01:47:44,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29837 Valid, 19789 Invalid, 3635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3563 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2023-11-29 01:47:44,754 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18255 states.
[2023-11-29 01:47:44,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18255 to 11014.
[2023-11-29 01:47:44,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11014 states, 11013 states have (on average 1.6634886043766457) internal successors, (18320), 11013 states have internal predecessors, (18320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:47:44,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11014 states to 11014 states and 18320 transitions.
[2023-11-29 01:47:44,910 INFO  L78                 Accepts]: Start accepts. Automaton has 11014 states and 18320 transitions. Word has length 3246
[2023-11-29 01:47:44,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:47:44,911 INFO  L495      AbstractCegarLoop]: Abstraction has 11014 states and 18320 transitions.
[2023-11-29 01:47:44,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.0) internal successors, (3246), 5 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:47:44,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 11014 states and 18320 transitions.
[2023-11-29 01:47:44,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3248
[2023-11-29 01:47:44,970 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:47:44,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:44,972 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 01:47:44,972 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:47:44,973 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:47:44,974 INFO  L85        PathProgramCache]: Analyzing trace with hash 1565488560, now seen corresponding path program 1 times
[2023-11-29 01:47:44,974 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:47:44,974 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450080001]
[2023-11-29 01:47:44,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:47:44,974 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:48:08,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:48:16,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:48:16,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:48:16,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450080001]
[2023-11-29 01:48:16,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450080001] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:48:16,191 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:48:16,191 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:48:16,191 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917767374]
[2023-11-29 01:48:16,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:48:16,194 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:48:16,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:48:16,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:48:16,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:48:16,197 INFO  L87              Difference]: Start difference. First operand 11014 states and 18320 transitions. Second operand  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:48:19,089 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:48:20,443 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:48:25,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:48:25,708 INFO  L93              Difference]: Finished difference Result 32711 states and 54297 transitions.
[2023-11-29 01:48:25,709 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:48:25,710 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 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 3247
[2023-11-29 01:48:25,711 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:48:25,732 INFO  L225             Difference]: With dead ends: 32711
[2023-11-29 01:48:25,733 INFO  L226             Difference]: Without dead ends: 22411
[2023-11-29 01:48:25,741 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:48:25,742 INFO  L413           NwaCegarLoop]: 8677 mSDtfsCounter, 21530 mSDsluCounter, 30268 mSDsCounter, 0 mSdLazyCounter, 6101 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21530 SdHoareTripleChecker+Valid, 38945 SdHoareTripleChecker+Invalid, 6519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 6101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2023-11-29 01:48:25,743 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21530 Valid, 38945 Invalid, 6519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 6101 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time]
[2023-11-29 01:48:25,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22411 states.
[2023-11-29 01:48:25,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 11218.
[2023-11-29 01:48:25,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11218 states, 11217 states have (on average 1.6617633948471071) internal successors, (18640), 11217 states have internal predecessors, (18640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:48:25,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11218 states to 11218 states and 18640 transitions.
[2023-11-29 01:48:25,931 INFO  L78                 Accepts]: Start accepts. Automaton has 11218 states and 18640 transitions. Word has length 3247
[2023-11-29 01:48:25,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:48:25,932 INFO  L495      AbstractCegarLoop]: Abstraction has 11218 states and 18640 transitions.
[2023-11-29 01:48:25,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:48:25,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 11218 states and 18640 transitions.
[2023-11-29 01:48:26,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3248
[2023-11-29 01:48:26,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:48:26,025 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 01:48:26,025 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 01:48:26,025 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:48:26,026 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:48:26,027 INFO  L85        PathProgramCache]: Analyzing trace with hash -1487389468, now seen corresponding path program 1 times
[2023-11-29 01:48:26,027 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:48:26,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098861220]
[2023-11-29 01:48:26,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:48:26,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:48:48,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:48:55,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:48:55,740 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:48:55,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098861220]
[2023-11-29 01:48:55,740 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098861220] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:48:55,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:48:55,741 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:48:55,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446511924]
[2023-11-29 01:48:55,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:48:55,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:48:55,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:48:55,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:48:55,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:48:55,748 INFO  L87              Difference]: Start difference. First operand 11218 states and 18640 transitions. Second operand  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:00,022 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:49:03,018 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:49:04,500 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:49:10,743 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:49:11,649 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:49:11,649 INFO  L93              Difference]: Finished difference Result 36628 states and 60741 transitions.
[2023-11-29 01:49:11,649 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:49:11,650 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 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 3247
[2023-11-29 01:49:11,651 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:49:11,665 INFO  L225             Difference]: With dead ends: 36628
[2023-11-29 01:49:11,665 INFO  L226             Difference]: Without dead ends: 26198
[2023-11-29 01:49:11,668 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:49:11,669 INFO  L413           NwaCegarLoop]: 6338 mSDtfsCounter, 21431 mSDsluCounter, 25644 mSDsCounter, 0 mSdLazyCounter, 5539 mSolverCounterSat, 418 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21431 SdHoareTripleChecker+Valid, 31982 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 5539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time
[2023-11-29 01:49:11,670 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21431 Valid, 31982 Invalid, 5958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 5539 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time]
[2023-11-29 01:49:11,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26198 states.
[2023-11-29 01:49:11,805 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26198 to 12038.
[2023-11-29 01:49:11,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12038 states, 12037 states have (on average 1.656642020436986) internal successors, (19941), 12037 states have internal predecessors, (19941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:11,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12038 states to 12038 states and 19941 transitions.
[2023-11-29 01:49:11,830 INFO  L78                 Accepts]: Start accepts. Automaton has 12038 states and 19941 transitions. Word has length 3247
[2023-11-29 01:49:11,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:49:11,831 INFO  L495      AbstractCegarLoop]: Abstraction has 12038 states and 19941 transitions.
[2023-11-29 01:49:11,832 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.1666666666666) internal successors, (3247), 6 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:11,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 12038 states and 19941 transitions.
[2023-11-29 01:49:11,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3249
[2023-11-29 01:49:11,890 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:49:11,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 01:49:11,892 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-29 01:49:11,892 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:49:11,892 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:49:11,894 INFO  L85        PathProgramCache]: Analyzing trace with hash 164502728, now seen corresponding path program 1 times
[2023-11-29 01:49:11,894 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:49:11,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98782712]
[2023-11-29 01:49:11,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:49:11,895 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:49:32,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:49:39,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:49:39,749 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:49:39,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98782712]
[2023-11-29 01:49:39,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98782712] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:49:39,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:49:39,750 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:49:39,750 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291889524]
[2023-11-29 01:49:39,750 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:49:39,752 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:49:39,752 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:49:39,755 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:49:39,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:49:39,756 INFO  L87              Difference]: Start difference. First operand 12038 states and 19941 transitions. Second operand  has 6 states, 6 states have (on average 541.3333333333334) internal successors, (3248), 6 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:44,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:49:44,722 INFO  L93              Difference]: Finished difference Result 38377 states and 63504 transitions.
[2023-11-29 01:49:44,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:49:44,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.3333333333334) internal successors, (3248), 6 states have internal predecessors, (3248), 0 states have call successors, (0), 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 3248
[2023-11-29 01:49:44,724 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:49:44,743 INFO  L225             Difference]: With dead ends: 38377
[2023-11-29 01:49:44,743 INFO  L226             Difference]: Without dead ends: 27508
[2023-11-29 01:49:44,753 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:49:44,753 INFO  L413           NwaCegarLoop]: 6369 mSDtfsCounter, 21511 mSDsluCounter, 25678 mSDsCounter, 0 mSdLazyCounter, 5520 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21511 SdHoareTripleChecker+Valid, 32047 SdHoareTripleChecker+Invalid, 5938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 5520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-11-29 01:49:44,754 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21511 Valid, 32047 Invalid, 5938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 5520 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-11-29 01:49:44,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27508 states.
[2023-11-29 01:49:44,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 13251.
[2023-11-29 01:49:44,962 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13251 states, 13250 states have (on average 1.6495094339622642) internal successors, (21856), 13250 states have internal predecessors, (21856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:44,977 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 21856 transitions.
[2023-11-29 01:49:44,977 INFO  L78                 Accepts]: Start accepts. Automaton has 13251 states and 21856 transitions. Word has length 3248
[2023-11-29 01:49:44,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:49:44,978 INFO  L495      AbstractCegarLoop]: Abstraction has 13251 states and 21856 transitions.
[2023-11-29 01:49:44,979 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.3333333333334) internal successors, (3248), 6 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:49:44,979 INFO  L276                IsEmpty]: Start isEmpty. Operand 13251 states and 21856 transitions.
[2023-11-29 01:49:45,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3250
[2023-11-29 01:49:45,038 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:49:45,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 01:49:45,040 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-29 01:49:45,040 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:49:45,040 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:49:45,041 INFO  L85        PathProgramCache]: Analyzing trace with hash -922763112, now seen corresponding path program 1 times
[2023-11-29 01:49:45,041 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:49:45,041 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420251154]
[2023-11-29 01:49:45,042 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:49:45,042 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:50:07,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:50:14,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:50:14,508 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:50:14,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420251154]
[2023-11-29 01:50:14,508 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420251154] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:50:14,508 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:50:14,508 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:50:14,508 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767950069]
[2023-11-29 01:50:14,508 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:50:14,511 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:50:14,511 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:50:14,513 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:50:14,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:50:14,514 INFO  L87              Difference]: Start difference. First operand 13251 states and 21856 transitions. Second operand  has 6 states, 6 states have (on average 541.5) internal successors, (3249), 6 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:50:18,844 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:22,854 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:26,116 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:29,346 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:33,353 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:37,042 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:50:41,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:50:41,442 INFO  L93              Difference]: Finished difference Result 41784 states and 68903 transitions.
[2023-11-29 01:50:41,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:50:41,443 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.5) internal successors, (3249), 6 states have internal predecessors, (3249), 0 states have call successors, (0), 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 3249
[2023-11-29 01:50:41,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:50:41,464 INFO  L225             Difference]: With dead ends: 41784
[2023-11-29 01:50:41,464 INFO  L226             Difference]: Without dead ends: 30284
[2023-11-29 01:50:41,474 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:50:41,475 INFO  L413           NwaCegarLoop]: 6334 mSDtfsCounter, 21399 mSDsluCounter, 25640 mSDsCounter, 0 mSdLazyCounter, 5539 mSolverCounterSat, 418 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21399 SdHoareTripleChecker+Valid, 31974 SdHoareTripleChecker+Invalid, 5960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 5539 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time
[2023-11-29 01:50:41,475 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21399 Valid, 31974 Invalid, 5960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 5539 Invalid, 3 Unknown, 0 Unchecked, 26.5s Time]
[2023-11-29 01:50:41,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30284 states.
[2023-11-29 01:50:41,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30284 to 16172.
[2023-11-29 01:50:41,661 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16172 states, 16171 states have (on average 1.6378084224846947) internal successors, (26485), 16171 states have internal predecessors, (26485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:50:41,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16172 states to 16172 states and 26485 transitions.
[2023-11-29 01:50:41,687 INFO  L78                 Accepts]: Start accepts. Automaton has 16172 states and 26485 transitions. Word has length 3249
[2023-11-29 01:50:41,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:50:41,688 INFO  L495      AbstractCegarLoop]: Abstraction has 16172 states and 26485 transitions.
[2023-11-29 01:50:41,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.5) internal successors, (3249), 6 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:50:41,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 16172 states and 26485 transitions.
[2023-11-29 01:50:41,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3251
[2023-11-29 01:50:41,744 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:50:41,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:41,747 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-29 01:50:41,747 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:50:41,747 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:50:41,749 INFO  L85        PathProgramCache]: Analyzing trace with hash -812001284, now seen corresponding path program 1 times
[2023-11-29 01:50:41,749 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:50:41,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436190978]
[2023-11-29 01:50:41,749 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:50:41,750 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:51:01,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:51:08,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:51:08,730 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:51:08,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436190978]
[2023-11-29 01:51:08,730 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436190978] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:51:08,730 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:51:08,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:51:08,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855981486]
[2023-11-29 01:51:08,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:51:08,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:51:08,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:51:08,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:51:08,736 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:51:08,736 INFO  L87              Difference]: Start difference. First operand 16172 states and 26485 transitions. Second operand  has 6 states, 6 states have (on average 541.6666666666666) internal successors, (3250), 6 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:51:12,136 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:51:18,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:51:18,293 INFO  L93              Difference]: Finished difference Result 48597 states and 79672 transitions.
[2023-11-29 01:51:18,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:51:18,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.6666666666666) internal successors, (3250), 6 states have internal predecessors, (3250), 0 states have call successors, (0), 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 3250
[2023-11-29 01:51:18,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:51:18,314 INFO  L225             Difference]: With dead ends: 48597
[2023-11-29 01:51:18,314 INFO  L226             Difference]: Without dead ends: 35532
[2023-11-29 01:51:18,324 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:51:18,324 INFO  L413           NwaCegarLoop]: 6367 mSDtfsCounter, 13653 mSDsluCounter, 31539 mSDsCounter, 0 mSdLazyCounter, 7352 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13653 SdHoareTripleChecker+Valid, 37906 SdHoareTripleChecker+Invalid, 7770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 7352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2023-11-29 01:51:18,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13653 Valid, 37906 Invalid, 7770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 7352 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time]
[2023-11-29 01:51:18,346 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35532 states.
[2023-11-29 01:51:18,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35532 to 21110.
[2023-11-29 01:51:18,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21110 states, 21109 states have (on average 1.6243782272964138) internal successors, (34289), 21109 states have internal predecessors, (34289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:51:18,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21110 states to 21110 states and 34289 transitions.
[2023-11-29 01:51:18,597 INFO  L78                 Accepts]: Start accepts. Automaton has 21110 states and 34289 transitions. Word has length 3250
[2023-11-29 01:51:18,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:51:18,598 INFO  L495      AbstractCegarLoop]: Abstraction has 21110 states and 34289 transitions.
[2023-11-29 01:51:18,599 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.6666666666666) internal successors, (3250), 6 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:51:18,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 21110 states and 34289 transitions.
[2023-11-29 01:51:18,653 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3252
[2023-11-29 01:51:18,653 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:51:18,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:18,655 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-29 01:51:18,655 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:51:18,656 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:51:18,657 INFO  L85        PathProgramCache]: Analyzing trace with hash -680351668, now seen corresponding path program 1 times
[2023-11-29 01:51:18,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:51:18,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155136363]
[2023-11-29 01:51:18,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:51:18,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:51:41,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:51:48,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:51:48,135 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:51:48,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155136363]
[2023-11-29 01:51:48,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155136363] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:51:48,135 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:51:48,136 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:51:48,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193925699]
[2023-11-29 01:51:48,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:51:48,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:51:48,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:51:48,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:51:48,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:51:48,143 INFO  L87              Difference]: Start difference. First operand 21110 states and 34289 transitions. Second operand  has 6 states, 6 states have (on average 541.8333333333334) internal successors, (3251), 6 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:51:50,461 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:51:55,801 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:51:57,151 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:02,261 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:03,374 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:04,228 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:52:04,228 INFO  L93              Difference]: Finished difference Result 61673 states and 100402 transitions.
[2023-11-29 01:52:04,228 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:52:04,229 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 541.8333333333334) internal successors, (3251), 6 states have internal predecessors, (3251), 0 states have call successors, (0), 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 3251
[2023-11-29 01:52:04,229 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:52:04,257 INFO  L225             Difference]: With dead ends: 61673
[2023-11-29 01:52:04,257 INFO  L226             Difference]: Without dead ends: 46022
[2023-11-29 01:52:04,268 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:52:04,269 INFO  L413           NwaCegarLoop]: 6330 mSDtfsCounter, 21367 mSDsluCounter, 25636 mSDsCounter, 0 mSdLazyCounter, 5543 mSolverCounterSat, 418 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21367 SdHoareTripleChecker+Valid, 31966 SdHoareTripleChecker+Invalid, 5962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 5543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time
[2023-11-29 01:52:04,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21367 Valid, 31966 Invalid, 5962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 5543 Invalid, 1 Unknown, 0 Unchecked, 15.7s Time]
[2023-11-29 01:52:04,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46022 states.
[2023-11-29 01:52:04,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46022 to 31958.
[2023-11-29 01:52:04,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31958 states, 31957 states have (on average 1.610382701755484) internal successors, (51463), 31957 states have internal predecessors, (51463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:52:04,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31958 states to 31958 states and 51463 transitions.
[2023-11-29 01:52:04,648 INFO  L78                 Accepts]: Start accepts. Automaton has 31958 states and 51463 transitions. Word has length 3251
[2023-11-29 01:52:04,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:52:04,649 INFO  L495      AbstractCegarLoop]: Abstraction has 31958 states and 51463 transitions.
[2023-11-29 01:52:04,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 541.8333333333334) internal successors, (3251), 6 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:52:04,650 INFO  L276                IsEmpty]: Start isEmpty. Operand 31958 states and 51463 transitions.
[2023-11-29 01:52:04,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3253
[2023-11-29 01:52:04,715 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:52:04,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:04,717 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-29 01:52:04,717 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:52:04,718 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:52:04,719 INFO  L85        PathProgramCache]: Analyzing trace with hash 787060528, now seen corresponding path program 1 times
[2023-11-29 01:52:04,719 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:52:04,719 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565313821]
[2023-11-29 01:52:04,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:52:04,719 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:52:24,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:52:33,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:52:33,729 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:52:33,729 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565313821]
[2023-11-29 01:52:33,729 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565313821] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:52:33,730 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:52:33,730 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:52:33,730 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751096308]
[2023-11-29 01:52:33,730 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:52:33,732 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:52:33,732 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:52:33,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:52:33,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:52:33,736 INFO  L87              Difference]: Start difference. First operand 31958 states and 51463 transitions. Second operand  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 5 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:52:39,103 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:43,124 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:46,957 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:52:51,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:52:51,538 INFO  L93              Difference]: Finished difference Result 63383 states and 102958 transitions.
[2023-11-29 01:52:51,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:52:51,539 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 5 states have internal predecessors, (3252), 0 states have call successors, (0), 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 3252
[2023-11-29 01:52:51,540 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:52:51,563 INFO  L225             Difference]: With dead ends: 63383
[2023-11-29 01:52:51,563 INFO  L226             Difference]: Without dead ends: 41954
[2023-11-29 01:52:51,573 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:52:51,573 INFO  L413           NwaCegarLoop]: 5917 mSDtfsCounter, 22090 mSDsluCounter, 17699 mSDsCounter, 0 mSdLazyCounter, 7894 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22090 SdHoareTripleChecker+Valid, 23616 SdHoareTripleChecker+Invalid, 7897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7894 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time
[2023-11-29 01:52:51,574 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22090 Valid, 23616 Invalid, 7897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7894 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time]
[2023-11-29 01:52:51,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41954 states.
[2023-11-29 01:52:51,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 31842.
[2023-11-29 01:52:51,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31842 states, 31841 states have (on average 1.610596400866807) internal successors, (51283), 31841 states have internal predecessors, (51283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:52:51,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31842 states to 31842 states and 51283 transitions.
[2023-11-29 01:52:51,923 INFO  L78                 Accepts]: Start accepts. Automaton has 31842 states and 51283 transitions. Word has length 3252
[2023-11-29 01:52:51,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:52:51,924 INFO  L495      AbstractCegarLoop]: Abstraction has 31842 states and 51283 transitions.
[2023-11-29 01:52:51,925 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 5 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:52:51,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 31842 states and 51283 transitions.
[2023-11-29 01:52:51,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3253
[2023-11-29 01:52:51,990 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:52:51,992 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 01:52:51,993 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-29 01:52:51,993 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:52:51,993 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:52:51,994 INFO  L85        PathProgramCache]: Analyzing trace with hash 1440889710, now seen corresponding path program 1 times
[2023-11-29 01:52:51,994 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:52:51,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763230815]
[2023-11-29 01:52:51,995 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:52:51,995 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:53:10,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:53:18,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:53:18,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:53:18,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763230815]
[2023-11-29 01:53:18,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763230815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:53:18,205 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:53:18,206 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:53:18,206 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070262563]
[2023-11-29 01:53:18,206 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:53:18,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:53:18,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:53:18,211 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:53:18,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:53:18,212 INFO  L87              Difference]: Start difference. First operand 31842 states and 51283 transitions. Second operand  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 6 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:53:20,323 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:53:27,054 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:53:27,054 INFO  L93              Difference]: Finished difference Result 87776 states and 141700 transitions.
[2023-11-29 01:53:27,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:53:27,055 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 6 states have internal predecessors, (3252), 0 states have call successors, (0), 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 3252
[2023-11-29 01:53:27,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:53:27,103 INFO  L225             Difference]: With dead ends: 87776
[2023-11-29 01:53:27,103 INFO  L226             Difference]: Without dead ends: 66470
[2023-11-29 01:53:27,123 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:53:27,124 INFO  L413           NwaCegarLoop]: 6365 mSDtfsCounter, 13640 mSDsluCounter, 31536 mSDsCounter, 0 mSdLazyCounter, 7352 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13640 SdHoareTripleChecker+Valid, 37901 SdHoareTripleChecker+Invalid, 7770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 7352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2023-11-29 01:53:27,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13640 Valid, 37901 Invalid, 7770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 7352 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-11-29 01:53:27,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66470 states.
[2023-11-29 01:53:27,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66470 to 51713.
[2023-11-29 01:53:27,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51713 states, 51712 states have (on average 1.599164603960396) internal successors, (82696), 51712 states have internal predecessors, (82696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:53:27,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51713 states to 51713 states and 82696 transitions.
[2023-11-29 01:53:27,711 INFO  L78                 Accepts]: Start accepts. Automaton has 51713 states and 82696 transitions. Word has length 3252
[2023-11-29 01:53:27,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:53:27,712 INFO  L495      AbstractCegarLoop]: Abstraction has 51713 states and 82696 transitions.
[2023-11-29 01:53:27,712 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 542.0) internal successors, (3252), 6 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:53:27,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 51713 states and 82696 transitions.
[2023-11-29 01:53:27,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3254
[2023-11-29 01:53:27,784 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:53:27,786 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:27,786 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-11-29 01:53:27,787 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:53:27,787 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:53:27,788 INFO  L85        PathProgramCache]: Analyzing trace with hash -1751853182, now seen corresponding path program 1 times
[2023-11-29 01:53:27,788 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:53:27,788 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841443889]
[2023-11-29 01:53:27,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:53:27,789 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:53:48,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:53:57,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:53:57,605 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:53:57,606 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841443889]
[2023-11-29 01:53:57,606 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841443889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:53:57,606 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:53:57,606 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:53:57,606 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118525291]
[2023-11-29 01:53:57,606 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:53:57,610 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:53:57,610 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:53:57,612 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:53:57,613 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:53:57,613 INFO  L87              Difference]: Start difference. First operand 51713 states and 82696 transitions. Second operand  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 5 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:02,497 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:07,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:54:07,426 INFO  L93              Difference]: Finished difference Result 93897 states and 151328 transitions.
[2023-11-29 01:54:07,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:54:07,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 5 states have internal predecessors, (3253), 0 states have call successors, (0), 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 3253
[2023-11-29 01:54:07,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:54:07,475 INFO  L225             Difference]: With dead ends: 93897
[2023-11-29 01:54:07,475 INFO  L226             Difference]: Without dead ends: 62171
[2023-11-29 01:54:07,497 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:54:07,498 INFO  L413           NwaCegarLoop]: 5935 mSDtfsCounter, 22030 mSDsluCounter, 17614 mSDsCounter, 0 mSdLazyCounter, 7695 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22030 SdHoareTripleChecker+Valid, 23549 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2023-11-29 01:54:07,498 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22030 Valid, 23549 Invalid, 7697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7695 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time]
[2023-11-29 01:54:07,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62171 states.
[2023-11-29 01:54:07,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62171 to 51706.
[2023-11-29 01:54:08,023 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51706 states, 51705 states have (on average 1.5991296779808528) internal successors, (82683), 51705 states have internal predecessors, (82683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:08,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51706 states to 51706 states and 82683 transitions.
[2023-11-29 01:54:08,089 INFO  L78                 Accepts]: Start accepts. Automaton has 51706 states and 82683 transitions. Word has length 3253
[2023-11-29 01:54:08,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:54:08,090 INFO  L495      AbstractCegarLoop]: Abstraction has 51706 states and 82683 transitions.
[2023-11-29 01:54:08,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 5 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:08,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 51706 states and 82683 transitions.
[2023-11-29 01:54:08,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3254
[2023-11-29 01:54:08,165 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:54:08,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:08,167 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-29 01:54:08,167 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:54:08,167 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:54:08,168 INFO  L85        PathProgramCache]: Analyzing trace with hash -426423616, now seen corresponding path program 1 times
[2023-11-29 01:54:08,168 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:54:08,168 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58688802]
[2023-11-29 01:54:08,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:54:08,169 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:54:30,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:54:37,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:54:37,634 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:54:37,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58688802]
[2023-11-29 01:54:37,634 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58688802] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:54:37,634 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:54:37,634 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-29 01:54:37,634 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438689352]
[2023-11-29 01:54:37,635 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:54:37,637 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:54:37,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:54:37,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:54:37,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:54:37,641 INFO  L87              Difference]: Start difference. First operand 51706 states and 82683 transitions. Second operand  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 6 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:42,699 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:46,872 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:49,234 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:56,341 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:57,454 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 01:54:57,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 01:54:57,974 INFO  L93              Difference]: Finished difference Result 134994 states and 216327 transitions.
[2023-11-29 01:54:57,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 01:54:57,975 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 6 states have internal predecessors, (3253), 0 states have call successors, (0), 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 3253
[2023-11-29 01:54:57,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 01:54:58,053 INFO  L225             Difference]: With dead ends: 134994
[2023-11-29 01:54:58,053 INFO  L226             Difference]: Without dead ends: 103282
[2023-11-29 01:54:58,075 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:54:58,076 INFO  L413           NwaCegarLoop]: 6325 mSDtfsCounter, 7502 mSDsluCounter, 25790 mSDsCounter, 0 mSdLazyCounter, 6965 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7502 SdHoareTripleChecker+Valid, 32115 SdHoareTripleChecker+Invalid, 7004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 6965 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time
[2023-11-29 01:54:58,076 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7502 Valid, 32115 Invalid, 7004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 6965 Invalid, 2 Unknown, 0 Unchecked, 19.8s Time]
[2023-11-29 01:54:58,138 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103282 states.
[2023-11-29 01:54:58,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103282 to 93085.
[2023-11-29 01:54:58,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93085 states, 93084 states have (on average 1.5916591465772851) internal successors, (148158), 93084 states have internal predecessors, (148158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:58,976 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93085 states to 93085 states and 148158 transitions.
[2023-11-29 01:54:58,976 INFO  L78                 Accepts]: Start accepts. Automaton has 93085 states and 148158 transitions. Word has length 3253
[2023-11-29 01:54:58,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 01:54:58,977 INFO  L495      AbstractCegarLoop]: Abstraction has 93085 states and 148158 transitions.
[2023-11-29 01:54:58,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 542.1666666666666) internal successors, (3253), 6 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:54:58,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 93085 states and 148158 transitions.
[2023-11-29 01:54:59,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3255
[2023-11-29 01:54:59,082 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 01:54:59,084 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:59,084 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-11-29 01:54:59,084 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 01:54:59,084 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 01:54:59,086 INFO  L85        PathProgramCache]: Analyzing trace with hash 1976294308, now seen corresponding path program 1 times
[2023-11-29 01:54:59,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 01:54:59,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746600401]
[2023-11-29 01:54:59,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 01:54:59,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 01:55:23,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 01:55:32,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 01:55:32,526 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 01:55:32,526 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746600401]
[2023-11-29 01:55:32,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746600401] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 01:55:32,527 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 01:55:32,527 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 01:55:32,527 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87127320]
[2023-11-29 01:55:32,527 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 01:55:32,531 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-29 01:55:32,531 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 01:55:32,533 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-29 01:55:32,534 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-29 01:55:32,534 INFO  L87              Difference]: Start difference. First operand 93085 states and 148158 transitions. Second operand  has 6 states, 6 states have (on average 542.3333333333334) internal successors, (3254), 5 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 01:55:36,060 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []