./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.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_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/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_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/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_68bc2392-0cd0-4b89-9a56-854c1dd80366/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 98064db55f60a4f39a438b08a7ea524add9645b671b823408bed2bf264334aef
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-28 20:39:21,035 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-28 20:39:21,111 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-28 20:39:21,116 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-28 20:39:21,117 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-28 20:39:21,145 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-28 20:39:21,146 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-28 20:39:21,146 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-28 20:39:21,147 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-28 20:39:21,148 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-28 20:39:21,148 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-28 20:39:21,149 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-28 20:39:21,150 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-28 20:39:21,151 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-28 20:39:21,151 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-28 20:39:21,152 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-28 20:39:21,152 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-28 20:39:21,153 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-28 20:39:21,153 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-28 20:39:21,154 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-28 20:39:21,154 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-28 20:39:21,155 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-28 20:39:21,155 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-28 20:39:21,156 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-28 20:39:21,156 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-28 20:39:21,157 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-28 20:39:21,157 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-28 20:39:21,158 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-28 20:39:21,158 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:39:21,159 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-28 20:39:21,159 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-28 20:39:21,159 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-28 20:39:21,160 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-28 20:39:21,160 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-28 20:39:21,160 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-28 20:39:21,161 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-28 20:39:21,161 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-28 20:39:21,161 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-28 20:39:21,161 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-28 20:39:21,161 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_68bc2392-0cd0-4b89-9a56-854c1dd80366/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_68bc2392-0cd0-4b89-9a56-854c1dd80366/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 -> 98064db55f60a4f39a438b08a7ea524add9645b671b823408bed2bf264334aef
[2023-11-28 20:39:21,400 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-28 20:39:21,424 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-28 20:39:21,427 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-28 20:39:21,428 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-28 20:39:21,429 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-28 20:39:21,430 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.c
[2023-11-28 20:39:24,267 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-28 20:39:24,603 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-28 20:39:24,603 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.c
[2023-11-28 20:39:24,625 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/data/966a17143/7c2c29e04a854965bed95026666487ed/FLAG142d40170
[2023-11-28 20:39:24,640 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/data/966a17143/7c2c29e04a854965bed95026666487ed
[2023-11-28 20:39:24,643 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-28 20:39:24,645 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-28 20:39:24,646 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-28 20:39:24,646 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-28 20:39:24,652 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-28 20:39:24,653 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:39:24" (1/1) ...
[2023-11-28 20:39:24,654 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6911962e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:24, skipping insertion in model container
[2023-11-28 20:39:24,654 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:39:24" (1/1) ...
[2023-11-28 20:39:24,749 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-28 20:39:24,955 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_68bc2392-0cd0-4b89-9a56-854c1dd80366/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.c[1171,1184]
[2023-11-28 20:39:25,461 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:39:25,470 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-28 20:39:25,480 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_68bc2392-0cd0-4b89-9a56-854c1dd80366/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.3.prop1-back-serstep.c[1171,1184]
[2023-11-28 20:39:25,690 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:39:25,702 INFO  L206         MainTranslator]: Completed translation
[2023-11-28 20:39:25,703 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25 WrapperNode
[2023-11-28 20:39:25,703 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-28 20:39:25,704 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-28 20:39:25,704 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-28 20:39:25,704 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-28 20:39:25,710 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:25,791 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:26,909 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 14172
[2023-11-28 20:39:26,909 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-28 20:39:26,910 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-28 20:39:26,910 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-28 20:39:26,911 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-28 20:39:26,923 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:26,924 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:27,239 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:27,462 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].
[2023-11-28 20:39:27,462 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:27,463 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:27,879 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:27,979 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:28,059 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:28,115 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:28,425 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-28 20:39:28,427 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-28 20:39:28,427 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-28 20:39:28,427 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-28 20:39:28,428 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (1/1) ...
[2023-11-28 20:39:28,435 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:39:28,448 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:39:28,467 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-28 20:39:28,471 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-28 20:39:28,500 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-28 20:39:28,500 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-28 20:39:28,500 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-28 20:39:28,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-28 20:39:29,292 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-28 20:39:29,294 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-28 20:39:38,176 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-28 20:39:38,402 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-28 20:39:38,402 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-28 20:39:38,404 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:39:38 BoogieIcfgContainer
[2023-11-28 20:39:38,404 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-28 20:39:38,407 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-28 20:39:38,407 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-28 20:39:38,411 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-28 20:39:38,411 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:39:24" (1/3) ...
[2023-11-28 20:39:38,412 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f804e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:39:38, skipping insertion in model container
[2023-11-28 20:39:38,412 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:25" (2/3) ...
[2023-11-28 20:39:38,412 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f804e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:39:38, skipping insertion in model container
[2023-11-28 20:39:38,412 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:39:38" (3/3) ...
[2023-11-28 20:39:38,414 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mcs.3.prop1-back-serstep.c
[2023-11-28 20:39:38,432 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-28 20:39:38,432 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-28 20:39:38,534 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-28 20:39:38,541 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;@1e5e4705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-28 20:39:38,541 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-28 20:39:38,557 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 3140 states, 3138 states have (on average 1.6666666666666667) internal successors, (5230), 3139 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:38,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 433
[2023-11-28 20:39:38,590 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:38,591 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:39:38,591 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:38,596 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:38,597 INFO  L85        PathProgramCache]: Analyzing trace with hash 368574139, now seen corresponding path program 1 times
[2023-11-28 20:39:38,607 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:38,607 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818458961]
[2023-11-28 20:39:38,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:38,608 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:39:39,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:39:40,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:39:40,364 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:39:40,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818458961]
[2023-11-28 20:39:40,365 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818458961] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:39:40,366 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:39:40,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:39:40,367 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750113809]
[2023-11-28 20:39:40,368 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:39:40,374 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:39:40,374 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:39:40,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:39:40,403 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:39:40,412 INFO  L87              Difference]: Start difference. First operand  has 3140 states, 3138 states have (on average 1.6666666666666667) internal successors, (5230), 3139 states have internal predecessors, (5230), 0 states have call successors, (0), 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 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:40,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:39:40,612 INFO  L93              Difference]: Finished difference Result 6114 states and 10186 transitions.
[2023-11-28 20:39:40,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:39:40,615 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 432
[2023-11-28 20:39:40,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:39:40,646 INFO  L225             Difference]: With dead ends: 6114
[2023-11-28 20:39:40,646 INFO  L226             Difference]: Without dead ends: 3140
[2023-11-28 20:39:40,654 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
[2023-11-28 20:39:40,658 INFO  L413           NwaCegarLoop]: 5223 mSDtfsCounter, 1 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15664 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
[2023-11-28 20:39:40,659 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15664 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:39:40,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3140 states.
[2023-11-28 20:39:40,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140.
[2023-11-28 20:39:40,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3140 states, 3139 states have (on average 1.6654985664224276) internal successors, (5228), 3139 states have internal predecessors, (5228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:40,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5228 transitions.
[2023-11-28 20:39:40,781 INFO  L78                 Accepts]: Start accepts. Automaton has 3140 states and 5228 transitions. Word has length 432
[2023-11-28 20:39:40,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:39:40,784 INFO  L495      AbstractCegarLoop]: Abstraction has 3140 states and 5228 transitions.
[2023-11-28 20:39:40,784 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:40,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 3140 states and 5228 transitions.
[2023-11-28 20:39:40,791 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 434
[2023-11-28 20:39:40,791 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:40,792 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:39:40,792 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-28 20:39:40,792 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:40,793 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:40,793 INFO  L85        PathProgramCache]: Analyzing trace with hash -1457316481, now seen corresponding path program 1 times
[2023-11-28 20:39:40,793 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:40,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531506298]
[2023-11-28 20:39:40,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:40,794 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:39:41,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:39:41,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:39:41,913 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:39:41,913 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531506298]
[2023-11-28 20:39:41,914 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531506298] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:39:41,914 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:39:41,914 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:39:41,915 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415868771]
[2023-11-28 20:39:41,915 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:39:41,917 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:39:41,917 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:39:41,919 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:39:41,919 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:39:41,920 INFO  L87              Difference]: Start difference. First operand 3140 states and 5228 transitions. Second operand  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:42,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:39:42,166 INFO  L93              Difference]: Finished difference Result 6117 states and 10184 transitions.
[2023-11-28 20:39:42,167 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:39:42,168 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433
[2023-11-28 20:39:42,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:39:42,182 INFO  L225             Difference]: With dead ends: 6117
[2023-11-28 20:39:42,182 INFO  L226             Difference]: Without dead ends: 3143
[2023-11-28 20:39:42,184 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
[2023-11-28 20:39:42,186 INFO  L413           NwaCegarLoop]: 5223 mSDtfsCounter, 1 mSDsluCounter, 10439 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15662 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:39:42,186 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15662 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:39:42,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3143 states.
[2023-11-28 20:39:42,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3142.
[2023-11-28 20:39:42,234 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3142 states, 3141 states have (on average 1.665074816937281) internal successors, (5230), 3141 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:42,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5230 transitions.
[2023-11-28 20:39:42,244 INFO  L78                 Accepts]: Start accepts. Automaton has 3142 states and 5230 transitions. Word has length 433
[2023-11-28 20:39:42,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:39:42,245 INFO  L495      AbstractCegarLoop]: Abstraction has 3142 states and 5230 transitions.
[2023-11-28 20:39:42,245 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:42,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 3142 states and 5230 transitions.
[2023-11-28 20:39:42,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 435
[2023-11-28 20:39:42,252 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:42,252 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:39:42,253 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-28 20:39:42,253 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:42,253 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:42,254 INFO  L85        PathProgramCache]: Analyzing trace with hash 1855611987, now seen corresponding path program 1 times
[2023-11-28 20:39:42,254 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:42,254 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986392484]
[2023-11-28 20:39:42,254 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:42,255 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:39:42,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:39:43,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:39:43,121 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:39:43,121 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986392484]
[2023-11-28 20:39:43,121 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986392484] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:39:43,121 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:39:43,122 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:39:43,122 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844582447]
[2023-11-28 20:39:43,122 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:39:43,123 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:39:43,123 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:39:43,125 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:39:43,125 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:39:43,126 INFO  L87              Difference]: Start difference. First operand 3142 states and 5230 transitions. Second operand  has 5 states, 5 states have (on average 86.8) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:43,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:39:43,487 INFO  L93              Difference]: Finished difference Result 9558 states and 15913 transitions.
[2023-11-28 20:39:43,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:39:43,488 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 86.8) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434
[2023-11-28 20:39:43,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:39:43,528 INFO  L225             Difference]: With dead ends: 9558
[2023-11-28 20:39:43,528 INFO  L226             Difference]: Without dead ends: 6582
[2023-11-28 20:39:43,534 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-28 20:39:43,535 INFO  L413           NwaCegarLoop]: 6007 mSDtfsCounter, 20412 mSDsluCounter, 10440 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20412 SdHoareTripleChecker+Valid, 16447 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:39:43,536 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20412 Valid, 16447 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:39:43,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6582 states.
[2023-11-28 20:39:43,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 3615.
[2023-11-28 20:39:43,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3615 states, 3614 states have (on average 1.6649142224681792) internal successors, (6017), 3614 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:43,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6017 transitions.
[2023-11-28 20:39:43,666 INFO  L78                 Accepts]: Start accepts. Automaton has 3615 states and 6017 transitions. Word has length 434
[2023-11-28 20:39:43,667 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:39:43,667 INFO  L495      AbstractCegarLoop]: Abstraction has 3615 states and 6017 transitions.
[2023-11-28 20:39:43,667 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 86.8) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:43,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 3615 states and 6017 transitions.
[2023-11-28 20:39:43,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2416
[2023-11-28 20:39:43,798 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:43,801 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:39:43,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-28 20:39:43,801 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:43,802 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:43,803 INFO  L85        PathProgramCache]: Analyzing trace with hash -844930522, now seen corresponding path program 1 times
[2023-11-28 20:39:43,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:43,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789131816]
[2023-11-28 20:39:43,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:43,804 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:39:47,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:39:54,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2023-11-28 20:39:54,313 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:39:54,313 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789131816]
[2023-11-28 20:39:54,313 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789131816] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:39:54,313 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:39:54,314 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:39:54,314 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192598199]
[2023-11-28 20:39:54,314 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:39:54,317 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:39:54,317 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:39:54,320 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:39:54,321 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:39:54,322 INFO  L87              Difference]: Start difference. First operand 3615 states and 6017 transitions. Second operand  has 5 states, 5 states have (on average 420.4) internal successors, (2102), 5 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:54,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:39:54,612 INFO  L93              Difference]: Finished difference Result 9563 states and 15918 transitions.
[2023-11-28 20:39:54,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:39:54,616 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 420.4) internal successors, (2102), 5 states have internal predecessors, (2102), 0 states have call successors, (0), 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 2415
[2023-11-28 20:39:54,623 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:39:54,657 INFO  L225             Difference]: With dead ends: 9563
[2023-11-28 20:39:54,658 INFO  L226             Difference]: Without dead ends: 6587
[2023-11-28 20:39:54,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:39:54,664 INFO  L413           NwaCegarLoop]: 6008 mSDtfsCounter, 4941 mSDsluCounter, 17227 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 23235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:39:54,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 23235 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:39:54,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6587 states.
[2023-11-28 20:39:54,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6587 to 3615.
[2023-11-28 20:39:54,763 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3615 states, 3614 states have (on average 1.6649142224681792) internal successors, (6017), 3614 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:54,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6017 transitions.
[2023-11-28 20:39:54,775 INFO  L78                 Accepts]: Start accepts. Automaton has 3615 states and 6017 transitions. Word has length 2415
[2023-11-28 20:39:54,779 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:39:54,780 INFO  L495      AbstractCegarLoop]: Abstraction has 3615 states and 6017 transitions.
[2023-11-28 20:39:54,781 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 420.4) internal successors, (2102), 5 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:39:54,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 3615 states and 6017 transitions.
[2023-11-28 20:39:54,817 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2417
[2023-11-28 20:39:54,817 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:54,819 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:39:54,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-28 20:39:54,820 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:54,820 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:54,821 INFO  L85        PathProgramCache]: Analyzing trace with hash 1175079474, now seen corresponding path program 1 times
[2023-11-28 20:39:54,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:54,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261846635]
[2023-11-28 20:39:54,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:54,822 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:02,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:07,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:40:07,907 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:07,908 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261846635]
[2023-11-28 20:40:07,908 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261846635] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:07,908 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:07,909 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:40:07,909 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767987767]
[2023-11-28 20:40:07,909 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:07,912 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:40:07,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:07,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:40:07,916 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:40:07,918 INFO  L87              Difference]: Start difference. First operand 3615 states and 6017 transitions. Second operand  has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:10,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:10,648 INFO  L93              Difference]: Finished difference Result 9273 states and 15337 transitions.
[2023-11-28 20:40:10,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:40:10,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 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 2416
[2023-11-28 20:40:10,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:10,672 INFO  L225             Difference]: With dead ends: 9273
[2023-11-28 20:40:10,673 INFO  L226             Difference]: Without dead ends: 3615
[2023-11-28 20:40:10,678 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:40:10,679 INFO  L413           NwaCegarLoop]: 5686 mSDtfsCounter, 2207 mSDsluCounter, 9560 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 15246 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:10,680 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 15246 Invalid, 2235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [293 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2023-11-28 20:40:10,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3615 states.
[2023-11-28 20:40:10,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3615.
[2023-11-28 20:40:10,738 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3615 states, 3614 states have (on average 1.6646375207526287) internal successors, (6016), 3614 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:10,745 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6016 transitions.
[2023-11-28 20:40:10,745 INFO  L78                 Accepts]: Start accepts. Automaton has 3615 states and 6016 transitions. Word has length 2416
[2023-11-28 20:40:10,746 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:10,747 INFO  L495      AbstractCegarLoop]: Abstraction has 3615 states and 6016 transitions.
[2023-11-28 20:40:10,747 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:10,748 INFO  L276                IsEmpty]: Start isEmpty. Operand 3615 states and 6016 transitions.
[2023-11-28 20:40:10,805 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2418
[2023-11-28 20:40:10,805 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:10,807 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:10,807 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-28 20:40:10,807 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:10,808 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:10,809 INFO  L85        PathProgramCache]: Analyzing trace with hash 1288864316, now seen corresponding path program 1 times
[2023-11-28 20:40:10,810 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:10,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638050575]
[2023-11-28 20:40:10,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:10,810 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:13,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:17,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-11-28 20:40:17,803 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:17,803 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638050575]
[2023-11-28 20:40:17,803 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638050575] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:17,803 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:17,804 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:40:17,804 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083954285]
[2023-11-28 20:40:17,804 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:17,807 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:40:17,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:17,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:40:17,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:40:17,811 INFO  L87              Difference]: Start difference. First operand 3615 states and 6016 transitions. Second operand  has 4 states, 4 states have (on average 526.5) internal successors, (2106), 4 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:18,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:18,026 INFO  L93              Difference]: Finished difference Result 9565 states and 15917 transitions.
[2023-11-28 20:40:18,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:40:18,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 526.5) internal successors, (2106), 4 states have internal predecessors, (2106), 0 states have call successors, (0), 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 2417
[2023-11-28 20:40:18,032 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:18,050 INFO  L225             Difference]: With dead ends: 9565
[2023-11-28 20:40:18,050 INFO  L226             Difference]: Without dead ends: 6586
[2023-11-28 20:40:18,055 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:40:18,057 INFO  L413           NwaCegarLoop]: 6002 mSDtfsCounter, 4937 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 17217 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:18,057 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4937 Valid, 17217 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:40:18,069 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6586 states.
[2023-11-28 20:40:18,150 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 3617.
[2023-11-28 20:40:18,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3617 states, 3616 states have (on average 1.6642699115044248) internal successors, (6018), 3616 states have internal predecessors, (6018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:18,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 6018 transitions.
[2023-11-28 20:40:18,163 INFO  L78                 Accepts]: Start accepts. Automaton has 3617 states and 6018 transitions. Word has length 2417
[2023-11-28 20:40:18,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:18,168 INFO  L495      AbstractCegarLoop]: Abstraction has 3617 states and 6018 transitions.
[2023-11-28 20:40:18,168 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 526.5) internal successors, (2106), 4 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:18,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 3617 states and 6018 transitions.
[2023-11-28 20:40:18,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2419
[2023-11-28 20:40:18,221 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:18,223 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:18,223 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-28 20:40:18,223 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:18,224 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:18,225 INFO  L85        PathProgramCache]: Analyzing trace with hash -1484853898, now seen corresponding path program 1 times
[2023-11-28 20:40:18,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:18,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708501170]
[2023-11-28 20:40:18,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:18,226 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:20,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:24,606 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked.
[2023-11-28 20:40:24,606 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:24,606 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708501170]
[2023-11-28 20:40:24,607 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708501170] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:24,607 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:24,607 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:40:24,608 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459201525]
[2023-11-28 20:40:24,608 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:24,611 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:40:24,611 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:24,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:40:24,614 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:40:24,615 INFO  L87              Difference]: Start difference. First operand 3617 states and 6018 transitions. Second operand  has 4 states, 4 states have (on average 527.25) internal successors, (2109), 4 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:24,763 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:24,763 INFO  L93              Difference]: Finished difference Result 9571 states and 15923 transitions.
[2023-11-28 20:40:24,763 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:40:24,764 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 527.25) internal successors, (2109), 4 states have internal predecessors, (2109), 0 states have call successors, (0), 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 2418
[2023-11-28 20:40:24,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:24,781 INFO  L225             Difference]: With dead ends: 9571
[2023-11-28 20:40:24,781 INFO  L226             Difference]: Without dead ends: 6587
[2023-11-28 20:40:24,786 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:40:24,787 INFO  L413           NwaCegarLoop]: 5997 mSDtfsCounter, 4934 mSDsluCounter, 11210 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 17207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:24,788 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 17207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:40:24,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6587 states.
[2023-11-28 20:40:24,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6587 to 3619.
[2023-11-28 20:40:24,881 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3619 states, 3618 states have (on average 1.663902708678828) internal successors, (6020), 3618 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:24,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 6020 transitions.
[2023-11-28 20:40:24,887 INFO  L78                 Accepts]: Start accepts. Automaton has 3619 states and 6020 transitions. Word has length 2418
[2023-11-28 20:40:24,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:24,891 INFO  L495      AbstractCegarLoop]: Abstraction has 3619 states and 6020 transitions.
[2023-11-28 20:40:24,892 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 527.25) internal successors, (2109), 4 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:24,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 3619 states and 6020 transitions.
[2023-11-28 20:40:24,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2420
[2023-11-28 20:40:24,941 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:24,943 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:24,943 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-28 20:40:24,943 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:24,944 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:24,945 INFO  L85        PathProgramCache]: Analyzing trace with hash 1441916512, now seen corresponding path program 1 times
[2023-11-28 20:40:24,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:24,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193723068]
[2023-11-28 20:40:24,945 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:24,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:26,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:31,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-11-28 20:40:31,082 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:31,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193723068]
[2023-11-28 20:40:31,083 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193723068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:31,083 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:31,083 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:40:31,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060705107]
[2023-11-28 20:40:31,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:31,087 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:40:31,087 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:31,090 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:40:31,090 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:40:31,091 INFO  L87              Difference]: Start difference. First operand 3619 states and 6020 transitions. Second operand  has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:31,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:31,226 INFO  L93              Difference]: Finished difference Result 9577 states and 15929 transitions.
[2023-11-28 20:40:31,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:40:31,227 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 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 2419
[2023-11-28 20:40:31,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:31,243 INFO  L225             Difference]: With dead ends: 9577
[2023-11-28 20:40:31,243 INFO  L226             Difference]: Without dead ends: 6588
[2023-11-28 20:40:31,249 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:40:31,249 INFO  L413           NwaCegarLoop]: 5992 mSDtfsCounter, 4931 mSDsluCounter, 11205 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 17197 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:31,250 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4931 Valid, 17197 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:40:31,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6588 states.
[2023-11-28 20:40:31,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 3621.
[2023-11-28 20:40:31,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3621 states, 3620 states have (on average 1.66353591160221) internal successors, (6022), 3620 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:31,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6022 transitions.
[2023-11-28 20:40:31,331 INFO  L78                 Accepts]: Start accepts. Automaton has 3621 states and 6022 transitions. Word has length 2419
[2023-11-28 20:40:31,333 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:31,333 INFO  L495      AbstractCegarLoop]: Abstraction has 3621 states and 6022 transitions.
[2023-11-28 20:40:31,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:31,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 3621 states and 6022 transitions.
[2023-11-28 20:40:31,382 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2421
[2023-11-28 20:40:31,383 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:31,385 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:31,385 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-28 20:40:31,385 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:31,385 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:31,386 INFO  L85        PathProgramCache]: Analyzing trace with hash 49918926, now seen corresponding path program 1 times
[2023-11-28 20:40:31,387 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:31,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372873342]
[2023-11-28 20:40:31,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:31,387 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:43,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:48,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:40:48,741 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:48,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372873342]
[2023-11-28 20:40:48,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372873342] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:48,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:48,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:40:48,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137680298]
[2023-11-28 20:40:48,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:48,744 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-28 20:40:48,744 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:48,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-28 20:40:48,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:40:48,748 INFO  L87              Difference]: Start difference. First operand 3621 states and 6022 transitions. Second operand  has 6 states, 6 states have (on average 403.3333333333333) internal successors, (2420), 5 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:50,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:50,616 INFO  L93              Difference]: Finished difference Result 9762 states and 16209 transitions.
[2023-11-28 20:40:50,616 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-28 20:40:50,617 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 403.3333333333333) internal successors, (2420), 5 states have internal predecessors, (2420), 0 states have call successors, (0), 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 2420
[2023-11-28 20:40:50,618 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:50,630 INFO  L225             Difference]: With dead ends: 9762
[2023-11-28 20:40:50,631 INFO  L226             Difference]: Without dead ends: 6124
[2023-11-28 20:40:50,635 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2023-11-28 20:40:50,636 INFO  L413           NwaCegarLoop]: 5165 mSDtfsCounter, 16301 mSDsluCounter, 13974 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16301 SdHoareTripleChecker+Valid, 19139 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:50,636 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16301 Valid, 19139 Invalid, 1522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-11-28 20:40:50,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6124 states.
[2023-11-28 20:40:50,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 3621.
[2023-11-28 20:40:50,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3621 states, 3620 states have (on average 1.6632596685082872) internal successors, (6021), 3620 states have internal predecessors, (6021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:50,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6021 transitions.
[2023-11-28 20:40:50,703 INFO  L78                 Accepts]: Start accepts. Automaton has 3621 states and 6021 transitions. Word has length 2420
[2023-11-28 20:40:50,704 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:50,704 INFO  L495      AbstractCegarLoop]: Abstraction has 3621 states and 6021 transitions.
[2023-11-28 20:40:50,705 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 403.3333333333333) internal successors, (2420), 5 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:50,705 INFO  L276                IsEmpty]: Start isEmpty. Operand 3621 states and 6021 transitions.
[2023-11-28 20:40:50,736 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2422
[2023-11-28 20:40:50,736 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:50,738 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:50,738 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-28 20:40:50,738 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:50,739 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:50,739 INFO  L85        PathProgramCache]: Analyzing trace with hash -380228726, now seen corresponding path program 1 times
[2023-11-28 20:40:50,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:50,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674947268]
[2023-11-28 20:40:50,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:50,740 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:52,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:57,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked.
[2023-11-28 20:40:57,509 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:57,509 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674947268]
[2023-11-28 20:40:57,509 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674947268] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:57,509 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:57,510 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:40:57,510 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491055576]
[2023-11-28 20:40:57,510 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:57,513 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:40:57,513 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:57,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:40:57,516 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:40:57,517 INFO  L87              Difference]: Start difference. First operand 3621 states and 6021 transitions. Second operand  has 5 states, 5 states have (on average 423.4) internal successors, (2117), 5 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:57,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:57,673 INFO  L93              Difference]: Finished difference Result 9583 states and 15934 transitions.
[2023-11-28 20:40:57,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:40:57,674 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 423.4) internal successors, (2117), 5 states have internal predecessors, (2117), 0 states have call successors, (0), 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 2421
[2023-11-28 20:40:57,677 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:57,695 INFO  L225             Difference]: With dead ends: 9583
[2023-11-28 20:40:57,696 INFO  L226             Difference]: Without dead ends: 6589
[2023-11-28 20:40:57,701 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:40:57,702 INFO  L413           NwaCegarLoop]: 5986 mSDtfsCounter, 4928 mSDsluCounter, 17182 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 23168 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:57,702 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4928 Valid, 23168 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:40:57,711 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6589 states.
[2023-11-28 20:40:57,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 3623.
[2023-11-28 20:40:57,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3623 states, 3622 states have (on average 1.6628934290447266) internal successors, (6023), 3622 states have internal predecessors, (6023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:57,788 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 6023 transitions.
[2023-11-28 20:40:57,789 INFO  L78                 Accepts]: Start accepts. Automaton has 3623 states and 6023 transitions. Word has length 2421
[2023-11-28 20:40:57,791 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:57,791 INFO  L495      AbstractCegarLoop]: Abstraction has 3623 states and 6023 transitions.
[2023-11-28 20:40:57,792 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 423.4) internal successors, (2117), 5 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:40:57,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 3623 states and 6023 transitions.
[2023-11-28 20:40:57,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2423
[2023-11-28 20:40:57,839 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:57,841 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:40:57,841 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-28 20:40:57,841 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:57,842 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:57,843 INFO  L85        PathProgramCache]: Analyzing trace with hash -1857789814, now seen corresponding path program 1 times
[2023-11-28 20:40:57,843 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:57,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776744637]
[2023-11-28 20:40:57,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:57,844 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:59,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:04,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-11-28 20:41:04,088 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:04,088 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776744637]
[2023-11-28 20:41:04,088 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776744637] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:04,088 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:04,089 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:41:04,089 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009975659]
[2023-11-28 20:41:04,089 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:04,092 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:41:04,092 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:04,095 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:41:04,095 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:41:04,096 INFO  L87              Difference]: Start difference. First operand 3623 states and 6023 transitions. Second operand  has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:04,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:41:04,226 INFO  L93              Difference]: Finished difference Result 9589 states and 15940 transitions.
[2023-11-28 20:41:04,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:41:04,227 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 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 2422
[2023-11-28 20:41:04,229 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:41:04,234 INFO  L225             Difference]: With dead ends: 9589
[2023-11-28 20:41:04,234 INFO  L226             Difference]: Without dead ends: 6590
[2023-11-28 20:41:04,238 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:41:04,239 INFO  L413           NwaCegarLoop]: 5981 mSDtfsCounter, 4925 mSDsluCounter, 11194 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4925 SdHoareTripleChecker+Valid, 17175 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:41:04,239 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4925 Valid, 17175 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:41:04,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6590 states.
[2023-11-28 20:41:04,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 3625.
[2023-11-28 20:41:04,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3625 states, 3624 states have (on average 1.6625275938189845) internal successors, (6025), 3624 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:04,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 6025 transitions.
[2023-11-28 20:41:04,360 INFO  L78                 Accepts]: Start accepts. Automaton has 3625 states and 6025 transitions. Word has length 2422
[2023-11-28 20:41:04,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:41:04,362 INFO  L495      AbstractCegarLoop]: Abstraction has 3625 states and 6025 transitions.
[2023-11-28 20:41:04,363 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:04,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 3625 states and 6025 transitions.
[2023-11-28 20:41:04,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2424
[2023-11-28 20:41:04,411 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:41:04,413 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:41:04,413 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-28 20:41:04,413 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:41:04,413 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:41:04,414 INFO  L85        PathProgramCache]: Analyzing trace with hash 2064545060, now seen corresponding path program 1 times
[2023-11-28 20:41:04,415 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:41:04,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424437761]
[2023-11-28 20:41:04,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:41:04,415 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:41:18,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:24,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked.
[2023-11-28 20:41:24,020 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:24,020 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424437761]
[2023-11-28 20:41:24,020 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424437761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:24,020 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:24,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:41:24,021 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024520867]
[2023-11-28 20:41:24,021 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:24,023 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-28 20:41:24,024 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:24,025 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-28 20:41:24,026 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:41:24,026 INFO  L87              Difference]: Start difference. First operand 3625 states and 6025 transitions. Second operand  has 6 states, 6 states have (on average 376.0) internal successors, (2256), 5 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:26,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:41:26,259 INFO  L93              Difference]: Finished difference Result 9487 states and 15748 transitions.
[2023-11-28 20:41:26,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:41:26,260 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 376.0) internal successors, (2256), 5 states have internal predecessors, (2256), 0 states have call successors, (0), 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 2423
[2023-11-28 20:41:26,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:41:26,263 INFO  L225             Difference]: With dead ends: 9487
[2023-11-28 20:41:26,263 INFO  L226             Difference]: Without dead ends: 6244
[2023-11-28 20:41:26,266 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
[2023-11-28 20:41:26,267 INFO  L413           NwaCegarLoop]: 4220 mSDtfsCounter, 19661 mSDsluCounter, 9036 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19661 SdHoareTripleChecker+Valid, 13256 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:41:26,267 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19661 Valid, 13256 Invalid, 2518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-11-28 20:41:26,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6244 states.
[2023-11-28 20:41:26,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 3625.
[2023-11-28 20:41:26,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3625 states, 3624 states have (on average 1.6622516556291391) internal successors, (6024), 3624 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:26,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 6024 transitions.
[2023-11-28 20:41:26,342 INFO  L78                 Accepts]: Start accepts. Automaton has 3625 states and 6024 transitions. Word has length 2423
[2023-11-28 20:41:26,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:41:26,343 INFO  L495      AbstractCegarLoop]: Abstraction has 3625 states and 6024 transitions.
[2023-11-28 20:41:26,344 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 376.0) internal successors, (2256), 5 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:26,344 INFO  L276                IsEmpty]: Start isEmpty. Operand 3625 states and 6024 transitions.
[2023-11-28 20:41:26,388 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2425
[2023-11-28 20:41:26,388 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:41:26,389 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:41:26,389 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-28 20:41:26,390 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:41:26,390 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:41:26,391 INFO  L85        PathProgramCache]: Analyzing trace with hash 607085084, now seen corresponding path program 1 times
[2023-11-28 20:41:26,391 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:41:26,391 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718487300]
[2023-11-28 20:41:26,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:41:26,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:41:38,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:43,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked.
[2023-11-28 20:41:43,182 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:43,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718487300]
[2023-11-28 20:41:43,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718487300] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:43,182 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:43,183 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:41:43,183 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591586733]
[2023-11-28 20:41:43,183 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:43,186 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-28 20:41:43,186 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:43,189 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-28 20:41:43,189 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:41:43,190 INFO  L87              Difference]: Start difference. First operand 3625 states and 6024 transitions. Second operand  has 6 states, 6 states have (on average 376.8333333333333) internal successors, (2261), 5 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:45,110 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:41:45,110 INFO  L93              Difference]: Finished difference Result 9481 states and 15737 transitions.
[2023-11-28 20:41:45,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:41:45,111 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 376.8333333333333) internal successors, (2261), 5 states have internal predecessors, (2261), 0 states have call successors, (0), 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 2424
[2023-11-28 20:41:45,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:41:45,116 INFO  L225             Difference]: With dead ends: 9481
[2023-11-28 20:41:45,116 INFO  L226             Difference]: Without dead ends: 6244
[2023-11-28 20:41:45,120 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
[2023-11-28 20:41:45,120 INFO  L413           NwaCegarLoop]: 4221 mSDtfsCounter, 19648 mSDsluCounter, 9036 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19648 SdHoareTripleChecker+Valid, 13257 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2023-11-28 20:41:45,120 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19648 Valid, 13257 Invalid, 2516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2023-11-28 20:41:45,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6244 states.
[2023-11-28 20:41:45,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 3625.
[2023-11-28 20:41:45,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3625 states, 3624 states have (on average 1.6619757174392935) internal successors, (6023), 3624 states have internal predecessors, (6023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:45,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 6023 transitions.
[2023-11-28 20:41:45,167 INFO  L78                 Accepts]: Start accepts. Automaton has 3625 states and 6023 transitions. Word has length 2424
[2023-11-28 20:41:45,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:41:45,168 INFO  L495      AbstractCegarLoop]: Abstraction has 3625 states and 6023 transitions.
[2023-11-28 20:41:45,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 376.8333333333333) internal successors, (2261), 5 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:45,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 3625 states and 6023 transitions.
[2023-11-28 20:41:45,214 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2426
[2023-11-28 20:41:45,214 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:41:45,216 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:41:45,216 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-28 20:41:45,216 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:41:45,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:41:45,217 INFO  L85        PathProgramCache]: Analyzing trace with hash 1902287960, now seen corresponding path program 1 times
[2023-11-28 20:41:45,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:41:45,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711169608]
[2023-11-28 20:41:45,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:41:45,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:41:47,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:52,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked.
[2023-11-28 20:41:52,699 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:52,699 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711169608]
[2023-11-28 20:41:52,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711169608] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:52,699 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:52,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:41:52,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656266151]
[2023-11-28 20:41:52,700 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:52,702 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:41:52,702 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:52,705 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:41:52,705 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:41:52,705 INFO  L87              Difference]: Start difference. First operand 3625 states and 6023 transitions. Second operand  has 5 states, 5 states have (on average 425.4) internal successors, (2127), 5 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:52,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:41:52,848 INFO  L93              Difference]: Finished difference Result 9595 states and 15944 transitions.
[2023-11-28 20:41:52,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:41:52,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 425.4) internal successors, (2127), 5 states have internal predecessors, (2127), 0 states have call successors, (0), 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 2425
[2023-11-28 20:41:52,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:41:52,855 INFO  L225             Difference]: With dead ends: 9595
[2023-11-28 20:41:52,855 INFO  L226             Difference]: Without dead ends: 6591
[2023-11-28 20:41:52,858 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:41:52,859 INFO  L413           NwaCegarLoop]: 5974 mSDtfsCounter, 4922 mSDsluCounter, 17158 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4922 SdHoareTripleChecker+Valid, 23132 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:41:52,859 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4922 Valid, 23132 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:41:52,865 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6591 states.
[2023-11-28 20:41:52,902 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 3627.
[2023-11-28 20:41:52,905 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3627 states, 3626 states have (on average 1.6616105901820188) internal successors, (6025), 3626 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:52,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 6025 transitions.
[2023-11-28 20:41:52,911 INFO  L78                 Accepts]: Start accepts. Automaton has 3627 states and 6025 transitions. Word has length 2425
[2023-11-28 20:41:52,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:41:52,913 INFO  L495      AbstractCegarLoop]: Abstraction has 3627 states and 6025 transitions.
[2023-11-28 20:41:52,914 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 425.4) internal successors, (2127), 5 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:52,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 3627 states and 6025 transitions.
[2023-11-28 20:41:53,006 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2427
[2023-11-28 20:41:53,006 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:41:53,008 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:41:53,008 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-11-28 20:41:53,008 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:41:53,008 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:41:53,009 INFO  L85        PathProgramCache]: Analyzing trace with hash -404653574, now seen corresponding path program 1 times
[2023-11-28 20:41:53,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:41:53,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129561796]
[2023-11-28 20:41:53,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:41:53,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:41:54,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:59,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-11-28 20:41:59,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:59,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129561796]
[2023-11-28 20:41:59,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129561796] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:59,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:59,162 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:41:59,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772567978]
[2023-11-28 20:41:59,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:59,166 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:41:59,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:59,168 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:41:59,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:41:59,169 INFO  L87              Difference]: Start difference. First operand 3627 states and 6025 transitions. Second operand  has 4 states, 4 states have (on average 532.5) internal successors, (2130), 4 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:59,315 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:41:59,316 INFO  L93              Difference]: Finished difference Result 9601 states and 15950 transitions.
[2023-11-28 20:41:59,316 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:41:59,316 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 532.5) internal successors, (2130), 4 states have internal predecessors, (2130), 0 states have call successors, (0), 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 2426
[2023-11-28 20:41:59,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:41:59,325 INFO  L225             Difference]: With dead ends: 9601
[2023-11-28 20:41:59,325 INFO  L226             Difference]: Without dead ends: 6592
[2023-11-28 20:41:59,329 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:41:59,329 INFO  L413           NwaCegarLoop]: 5969 mSDtfsCounter, 4919 mSDsluCounter, 11182 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4919 SdHoareTripleChecker+Valid, 17151 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:41:59,329 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4919 Valid, 17151 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:41:59,336 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6592 states.
[2023-11-28 20:41:59,386 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 3629.
[2023-11-28 20:41:59,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3629 states, 3628 states have (on average 1.6612458654906284) internal successors, (6027), 3628 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:59,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 6027 transitions.
[2023-11-28 20:41:59,395 INFO  L78                 Accepts]: Start accepts. Automaton has 3629 states and 6027 transitions. Word has length 2426
[2023-11-28 20:41:59,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:41:59,397 INFO  L495      AbstractCegarLoop]: Abstraction has 3629 states and 6027 transitions.
[2023-11-28 20:41:59,398 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 532.5) internal successors, (2130), 4 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:41:59,398 INFO  L276                IsEmpty]: Start isEmpty. Operand 3629 states and 6027 transitions.
[2023-11-28 20:41:59,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2428
[2023-11-28 20:41:59,459 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:41:59,460 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:41:59,461 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-28 20:41:59,461 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:41:59,461 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:41:59,462 INFO  L85        PathProgramCache]: Analyzing trace with hash -647162448, now seen corresponding path program 1 times
[2023-11-28 20:41:59,462 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:41:59,462 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819833676]
[2023-11-28 20:41:59,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:41:59,463 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:01,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:05,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2023-11-28 20:42:05,319 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:05,319 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819833676]
[2023-11-28 20:42:05,319 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819833676] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:05,319 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:05,320 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:42:05,320 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863727342]
[2023-11-28 20:42:05,320 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:05,323 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:42:05,323 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:05,325 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:42:05,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:42:05,326 INFO  L87              Difference]: Start difference. First operand 3629 states and 6027 transitions. Second operand  has 4 states, 4 states have (on average 533.25) internal successors, (2133), 4 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:05,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:05,454 INFO  L93              Difference]: Finished difference Result 9607 states and 15956 transitions.
[2023-11-28 20:42:05,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:42:05,454 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 533.25) internal successors, (2133), 4 states have internal predecessors, (2133), 0 states have call successors, (0), 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 2427
[2023-11-28 20:42:05,457 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:05,462 INFO  L225             Difference]: With dead ends: 9607
[2023-11-28 20:42:05,462 INFO  L226             Difference]: Without dead ends: 6593
[2023-11-28 20:42:05,465 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:42:05,466 INFO  L413           NwaCegarLoop]: 5964 mSDtfsCounter, 4916 mSDsluCounter, 11177 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:05,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 17141 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:42:05,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6593 states.
[2023-11-28 20:42:05,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 3631.
[2023-11-28 20:42:05,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3631 states, 3630 states have (on average 1.6608815426997245) internal successors, (6029), 3630 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:05,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 6029 transitions.
[2023-11-28 20:42:05,520 INFO  L78                 Accepts]: Start accepts. Automaton has 3631 states and 6029 transitions. Word has length 2427
[2023-11-28 20:42:05,523 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:05,523 INFO  L495      AbstractCegarLoop]: Abstraction has 3631 states and 6029 transitions.
[2023-11-28 20:42:05,523 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 533.25) internal successors, (2133), 4 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:05,523 INFO  L276                IsEmpty]: Start isEmpty. Operand 3631 states and 6029 transitions.
[2023-11-28 20:42:05,553 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2429
[2023-11-28 20:42:05,553 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:05,554 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:42:05,555 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-11-28 20:42:05,555 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:05,555 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:05,556 INFO  L85        PathProgramCache]: Analyzing trace with hash -731941792, now seen corresponding path program 1 times
[2023-11-28 20:42:05,556 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:05,556 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894364600]
[2023-11-28 20:42:05,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:05,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:07,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:12,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked.
[2023-11-28 20:42:12,031 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:12,031 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894364600]
[2023-11-28 20:42:12,031 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894364600] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:12,031 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:12,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:42:12,032 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296033894]
[2023-11-28 20:42:12,032 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:12,034 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:42:12,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:12,036 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:42:12,036 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:42:12,037 INFO  L87              Difference]: Start difference. First operand 3631 states and 6029 transitions. Second operand  has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:12,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:12,171 INFO  L93              Difference]: Finished difference Result 9613 states and 15962 transitions.
[2023-11-28 20:42:12,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:42:12,172 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 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 2428
[2023-11-28 20:42:12,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:12,180 INFO  L225             Difference]: With dead ends: 9613
[2023-11-28 20:42:12,180 INFO  L226             Difference]: Without dead ends: 6594
[2023-11-28 20:42:12,184 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:42:12,184 INFO  L413           NwaCegarLoop]: 5959 mSDtfsCounter, 4913 mSDsluCounter, 11172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4913 SdHoareTripleChecker+Valid, 17131 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:12,185 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4913 Valid, 17131 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:42:12,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6594 states.
[2023-11-28 20:42:12,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6594 to 3633.
[2023-11-28 20:42:12,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3633 states, 3632 states have (on average 1.6605176211453745) internal successors, (6031), 3632 states have internal predecessors, (6031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:12,237 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 6031 transitions.
[2023-11-28 20:42:12,237 INFO  L78                 Accepts]: Start accepts. Automaton has 3633 states and 6031 transitions. Word has length 2428
[2023-11-28 20:42:12,239 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:12,239 INFO  L495      AbstractCegarLoop]: Abstraction has 3633 states and 6031 transitions.
[2023-11-28 20:42:12,240 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:12,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 3633 states and 6031 transitions.
[2023-11-28 20:42:12,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2430
[2023-11-28 20:42:12,274 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:12,275 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:42:12,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2023-11-28 20:42:12,275 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:12,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:12,276 INFO  L85        PathProgramCache]: Analyzing trace with hash 1682374218, now seen corresponding path program 1 times
[2023-11-28 20:42:12,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:12,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897879827]
[2023-11-28 20:42:12,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:12,277 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:14,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:18,857 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked.
[2023-11-28 20:42:18,857 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:18,857 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897879827]
[2023-11-28 20:42:18,857 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897879827] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:18,857 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:18,858 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:42:18,858 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112083465]
[2023-11-28 20:42:18,858 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:18,860 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:42:18,861 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:18,862 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:42:18,862 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:42:18,863 INFO  L87              Difference]: Start difference. First operand 3633 states and 6031 transitions. Second operand  has 4 states, 4 states have (on average 534.75) internal successors, (2139), 4 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:18,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:18,974 INFO  L93              Difference]: Finished difference Result 9619 states and 15968 transitions.
[2023-11-28 20:42:18,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:42:18,975 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 534.75) internal successors, (2139), 4 states have internal predecessors, (2139), 0 states have call successors, (0), 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 2429
[2023-11-28 20:42:18,977 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:18,982 INFO  L225             Difference]: With dead ends: 9619
[2023-11-28 20:42:18,982 INFO  L226             Difference]: Without dead ends: 6595
[2023-11-28 20:42:18,985 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:42:18,985 INFO  L413           NwaCegarLoop]: 5954 mSDtfsCounter, 4910 mSDsluCounter, 11167 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4910 SdHoareTripleChecker+Valid, 17121 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:18,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4910 Valid, 17121 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:42:18,991 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6595 states.
[2023-11-28 20:42:19,023 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 3635.
[2023-11-28 20:42:19,026 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3635 states, 3634 states have (on average 1.6601541001651072) internal successors, (6033), 3634 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:19,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 6033 transitions.
[2023-11-28 20:42:19,031 INFO  L78                 Accepts]: Start accepts. Automaton has 3635 states and 6033 transitions. Word has length 2429
[2023-11-28 20:42:19,033 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:19,033 INFO  L495      AbstractCegarLoop]: Abstraction has 3635 states and 6033 transitions.
[2023-11-28 20:42:19,034 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 534.75) internal successors, (2139), 4 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:19,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 3635 states and 6033 transitions.
[2023-11-28 20:42:19,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2431
[2023-11-28 20:42:19,114 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:19,115 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:42:19,116 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2023-11-28 20:42:19,116 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:19,116 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:19,116 INFO  L85        PathProgramCache]: Analyzing trace with hash 1756578436, now seen corresponding path program 1 times
[2023-11-28 20:42:19,117 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:19,117 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195523787]
[2023-11-28 20:42:19,117 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:19,117 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:20,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:24,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2023-11-28 20:42:24,663 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:24,663 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195523787]
[2023-11-28 20:42:24,663 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195523787] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:24,663 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:24,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:42:24,663 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271498473]
[2023-11-28 20:42:24,664 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:24,665 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:42:24,665 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:24,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:42:24,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:42:24,668 INFO  L87              Difference]: Start difference. First operand 3635 states and 6033 transitions. Second operand  has 4 states, 4 states have (on average 535.5) internal successors, (2142), 4 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:24,791 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:24,791 INFO  L93              Difference]: Finished difference Result 9625 states and 15974 transitions.
[2023-11-28 20:42:24,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:42:24,792 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 535.5) internal successors, (2142), 4 states have internal predecessors, (2142), 0 states have call successors, (0), 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 2430
[2023-11-28 20:42:24,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:24,798 INFO  L225             Difference]: With dead ends: 9625
[2023-11-28 20:42:24,798 INFO  L226             Difference]: Without dead ends: 6596
[2023-11-28 20:42:24,801 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:42:24,801 INFO  L413           NwaCegarLoop]: 5949 mSDtfsCounter, 4907 mSDsluCounter, 11162 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4907 SdHoareTripleChecker+Valid, 17111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:24,801 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4907 Valid, 17111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:42:24,806 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6596 states.
[2023-11-28 20:42:24,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 3637.
[2023-11-28 20:42:24,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3637 states, 3636 states have (on average 1.6597909790979097) internal successors, (6035), 3636 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:24,838 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 6035 transitions.
[2023-11-28 20:42:24,838 INFO  L78                 Accepts]: Start accepts. Automaton has 3637 states and 6035 transitions. Word has length 2430
[2023-11-28 20:42:24,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:24,840 INFO  L495      AbstractCegarLoop]: Abstraction has 3637 states and 6035 transitions.
[2023-11-28 20:42:24,840 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 535.5) internal successors, (2142), 4 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:24,840 INFO  L276                IsEmpty]: Start isEmpty. Operand 3637 states and 6035 transitions.
[2023-11-28 20:42:24,866 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2432
[2023-11-28 20:42:24,866 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:24,867 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:42:24,867 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2023-11-28 20:42:24,867 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:24,868 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:24,868 INFO  L85        PathProgramCache]: Analyzing trace with hash -448305502, now seen corresponding path program 1 times
[2023-11-28 20:42:24,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:24,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899293986]
[2023-11-28 20:42:24,869 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:24,869 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:37,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:44,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked.
[2023-11-28 20:42:44,431 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:44,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899293986]
[2023-11-28 20:42:44,432 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899293986] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:44,432 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:44,432 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:42:44,432 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519486959]
[2023-11-28 20:42:44,432 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:44,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:42:44,435 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:44,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:42:44,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:42:44,438 INFO  L87              Difference]: Start difference. First operand 3637 states and 6035 transitions. Second operand  has 5 states, 5 states have (on average 454.8) internal successors, (2274), 4 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:47,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:47,826 INFO  L93              Difference]: Finished difference Result 9405 states and 15605 transitions.
[2023-11-28 20:42:47,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:42:47,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 454.8) internal successors, (2274), 4 states have internal predecessors, (2274), 0 states have call successors, (0), 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 2431
[2023-11-28 20:42:47,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:47,831 INFO  L225             Difference]: With dead ends: 9405
[2023-11-28 20:42:47,832 INFO  L226             Difference]: Without dead ends: 6156
[2023-11-28 20:42:47,835 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-11-28 20:42:47,835 INFO  L413           NwaCegarLoop]: 3878 mSDtfsCounter, 14839 mSDsluCounter, 7637 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14839 SdHoareTripleChecker+Valid, 11515 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:47,836 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14839 Valid, 11515 Invalid, 3868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-11-28 20:42:47,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6156 states.
[2023-11-28 20:42:47,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 3637.
[2023-11-28 20:42:47,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3637 states, 3636 states have (on average 1.6595159515951594) internal successors, (6034), 3636 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:47,893 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 6034 transitions.
[2023-11-28 20:42:47,893 INFO  L78                 Accepts]: Start accepts. Automaton has 3637 states and 6034 transitions. Word has length 2431
[2023-11-28 20:42:47,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:47,894 INFO  L495      AbstractCegarLoop]: Abstraction has 3637 states and 6034 transitions.
[2023-11-28 20:42:47,894 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 454.8) internal successors, (2274), 4 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:42:47,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 3637 states and 6034 transitions.
[2023-11-28 20:42:47,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2432
[2023-11-28 20:42:47,925 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:47,927 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:42:47,927 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2023-11-28 20:42:47,927 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:47,928 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:47,928 INFO  L85        PathProgramCache]: Analyzing trace with hash -520968992, now seen corresponding path program 1 times
[2023-11-28 20:42:47,929 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:47,929 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480370576]
[2023-11-28 20:42:47,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:47,929 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:00,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:05,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2023-11-28 20:43:05,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:05,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480370576]
[2023-11-28 20:43:05,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480370576] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:05,154 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:05,155 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:43:05,155 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806418965]
[2023-11-28 20:43:05,155 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:05,158 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-28 20:43:05,158 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:05,161 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-28 20:43:05,162 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:43:05,162 INFO  L87              Difference]: Start difference. First operand 3637 states and 6034 transitions. Second operand  has 6 states, 6 states have (on average 379.6666666666667) internal successors, (2278), 5 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:07,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:07,568 INFO  L93              Difference]: Finished difference Result 9511 states and 15761 transitions.
[2023-11-28 20:43:07,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:43:07,569 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 379.6666666666667) internal successors, (2278), 5 states have internal predecessors, (2278), 0 states have call successors, (0), 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 2431
[2023-11-28 20:43:07,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:07,574 INFO  L225             Difference]: With dead ends: 9511
[2023-11-28 20:43:07,574 INFO  L226             Difference]: Without dead ends: 6268
[2023-11-28 20:43:07,576 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2023-11-28 20:43:07,577 INFO  L413           NwaCegarLoop]: 4223 mSDtfsCounter, 19626 mSDsluCounter, 9268 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19626 SdHoareTripleChecker+Valid, 13491 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:07,577 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19626 Valid, 13491 Invalid, 2752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2023-11-28 20:43:07,582 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6268 states.
[2023-11-28 20:43:07,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 3637.
[2023-11-28 20:43:07,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3637 states, 3636 states have (on average 1.6592409240924093) internal successors, (6033), 3636 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:07,618 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 6033 transitions.
[2023-11-28 20:43:07,618 INFO  L78                 Accepts]: Start accepts. Automaton has 3637 states and 6033 transitions. Word has length 2431
[2023-11-28 20:43:07,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:07,618 INFO  L495      AbstractCegarLoop]: Abstraction has 3637 states and 6033 transitions.
[2023-11-28 20:43:07,619 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 379.6666666666667) internal successors, (2278), 5 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:07,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 3637 states and 6033 transitions.
[2023-11-28 20:43:07,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2433
[2023-11-28 20:43:07,644 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:07,645 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:07,645 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2023-11-28 20:43:07,645 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:07,645 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:07,646 INFO  L85        PathProgramCache]: Analyzing trace with hash -568900196, now seen corresponding path program 1 times
[2023-11-28 20:43:07,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:07,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005435889]
[2023-11-28 20:43:07,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:07,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:10,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:14,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-11-28 20:43:14,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:14,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005435889]
[2023-11-28 20:43:14,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005435889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:14,761 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:14,762 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:14,762 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161089204]
[2023-11-28 20:43:14,762 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:14,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:14,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:14,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:14,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:14,768 INFO  L87              Difference]: Start difference. First operand 3637 states and 6033 transitions. Second operand  has 4 states, 4 states have (on average 536.75) internal successors, (2147), 4 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:14,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:14,893 INFO  L93              Difference]: Finished difference Result 9631 states and 15978 transitions.
[2023-11-28 20:43:14,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:43:14,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 536.75) internal successors, (2147), 4 states have internal predecessors, (2147), 0 states have call successors, (0), 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 2432
[2023-11-28 20:43:14,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:14,900 INFO  L225             Difference]: With dead ends: 9631
[2023-11-28 20:43:14,901 INFO  L226             Difference]: Without dead ends: 6597
[2023-11-28 20:43:14,903 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:43:14,904 INFO  L413           NwaCegarLoop]: 5942 mSDtfsCounter, 4904 mSDsluCounter, 11155 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 17097 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:14,904 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4904 Valid, 17097 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:14,910 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6597 states.
[2023-11-28 20:43:14,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 3639.
[2023-11-28 20:43:14,948 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3639 states, 3638 states have (on average 1.658878504672897) internal successors, (6035), 3638 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:14,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 6035 transitions.
[2023-11-28 20:43:14,952 INFO  L78                 Accepts]: Start accepts. Automaton has 3639 states and 6035 transitions. Word has length 2432
[2023-11-28 20:43:14,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:14,954 INFO  L495      AbstractCegarLoop]: Abstraction has 3639 states and 6035 transitions.
[2023-11-28 20:43:14,954 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 536.75) internal successors, (2147), 4 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:14,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 3639 states and 6035 transitions.
[2023-11-28 20:43:14,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2434
[2023-11-28 20:43:14,985 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:14,986 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:14,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2023-11-28 20:43:14,986 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:14,987 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:14,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 1303904560, now seen corresponding path program 1 times
[2023-11-28 20:43:14,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:14,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060153735]
[2023-11-28 20:43:14,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:14,988 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:16,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:20,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2023-11-28 20:43:20,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:20,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060153735]
[2023-11-28 20:43:20,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060153735] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:20,628 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:20,628 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:20,628 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395700578]
[2023-11-28 20:43:20,629 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:20,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:20,632 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:20,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:20,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:20,636 INFO  L87              Difference]: Start difference. First operand 3639 states and 6035 transitions. Second operand  has 4 states, 4 states have (on average 537.5) internal successors, (2150), 4 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:20,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:20,781 INFO  L93              Difference]: Finished difference Result 9637 states and 15984 transitions.
[2023-11-28 20:43:20,781 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:43:20,781 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 537.5) internal successors, (2150), 4 states have internal predecessors, (2150), 0 states have call successors, (0), 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 2433
[2023-11-28 20:43:20,783 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:20,788 INFO  L225             Difference]: With dead ends: 9637
[2023-11-28 20:43:20,788 INFO  L226             Difference]: Without dead ends: 6598
[2023-11-28 20:43:20,791 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:43:20,791 INFO  L413           NwaCegarLoop]: 5937 mSDtfsCounter, 4901 mSDsluCounter, 11150 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 17087 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:20,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 17087 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:20,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6598 states.
[2023-11-28 20:43:20,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 3641.
[2023-11-28 20:43:20,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3641 states, 3640 states have (on average 1.6585164835164836) internal successors, (6037), 3640 states have internal predecessors, (6037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:20,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 6037 transitions.
[2023-11-28 20:43:20,839 INFO  L78                 Accepts]: Start accepts. Automaton has 3641 states and 6037 transitions. Word has length 2433
[2023-11-28 20:43:20,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:20,841 INFO  L495      AbstractCegarLoop]: Abstraction has 3641 states and 6037 transitions.
[2023-11-28 20:43:20,841 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 537.5) internal successors, (2150), 4 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:20,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 3641 states and 6037 transitions.
[2023-11-28 20:43:20,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2435
[2023-11-28 20:43:20,869 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:20,870 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:20,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2023-11-28 20:43:20,871 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:20,871 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:20,871 INFO  L85        PathProgramCache]: Analyzing trace with hash 1258533814, now seen corresponding path program 1 times
[2023-11-28 20:43:20,871 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:20,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678573869]
[2023-11-28 20:43:20,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:20,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:22,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:26,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2023-11-28 20:43:26,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:26,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678573869]
[2023-11-28 20:43:26,300 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678573869] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:26,301 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:26,301 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:26,301 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676095744]
[2023-11-28 20:43:26,301 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:26,304 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:26,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:26,306 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:26,306 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:26,307 INFO  L87              Difference]: Start difference. First operand 3641 states and 6037 transitions. Second operand  has 4 states, 4 states have (on average 538.25) internal successors, (2153), 4 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:26,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:26,436 INFO  L93              Difference]: Finished difference Result 9639 states and 15984 transitions.
[2023-11-28 20:43:26,436 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:43:26,437 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 538.25) internal successors, (2153), 4 states have internal predecessors, (2153), 0 states have call successors, (0), 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 2434
[2023-11-28 20:43:26,439 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:26,444 INFO  L225             Difference]: With dead ends: 9639
[2023-11-28 20:43:26,444 INFO  L226             Difference]: Without dead ends: 6595
[2023-11-28 20:43:26,447 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
[2023-11-28 20:43:26,447 INFO  L413           NwaCegarLoop]: 5928 mSDtfsCounter, 4893 mSDsluCounter, 11139 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 17067 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:26,448 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4893 Valid, 17067 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:26,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6595 states.
[2023-11-28 20:43:26,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 3643.
[2023-11-28 20:43:26,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3643 states, 3642 states have (on average 1.658154859967051) internal successors, (6039), 3642 states have internal predecessors, (6039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:26,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 6039 transitions.
[2023-11-28 20:43:26,495 INFO  L78                 Accepts]: Start accepts. Automaton has 3643 states and 6039 transitions. Word has length 2434
[2023-11-28 20:43:26,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:26,497 INFO  L495      AbstractCegarLoop]: Abstraction has 3643 states and 6039 transitions.
[2023-11-28 20:43:26,498 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 538.25) internal successors, (2153), 4 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:26,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 3643 states and 6039 transitions.
[2023-11-28 20:43:26,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2436
[2023-11-28 20:43:26,527 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:26,528 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:26,528 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2023-11-28 20:43:26,528 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:26,528 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:26,529 INFO  L85        PathProgramCache]: Analyzing trace with hash -1410683692, now seen corresponding path program 1 times
[2023-11-28 20:43:26,529 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:26,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76085050]
[2023-11-28 20:43:26,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:26,529 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:27,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:32,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-11-28 20:43:32,673 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:32,673 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76085050]
[2023-11-28 20:43:32,673 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76085050] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:32,673 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:32,673 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:43:32,673 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66466066]
[2023-11-28 20:43:32,673 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:32,675 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:43:32,675 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:32,677 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:43:32,677 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:43:32,678 INFO  L87              Difference]: Start difference. First operand 3643 states and 6039 transitions. Second operand  has 5 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:32,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:32,845 INFO  L93              Difference]: Finished difference Result 9652 states and 16001 transitions.
[2023-11-28 20:43:32,845 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:43:32,846 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 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 2435
[2023-11-28 20:43:32,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:32,853 INFO  L225             Difference]: With dead ends: 9652
[2023-11-28 20:43:32,853 INFO  L226             Difference]: Without dead ends: 6606
[2023-11-28 20:43:32,856 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:43:32,857 INFO  L413           NwaCegarLoop]: 5926 mSDtfsCounter, 4896 mSDsluCounter, 17058 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4896 SdHoareTripleChecker+Valid, 22984 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:32,857 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4896 Valid, 22984 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:32,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6606 states.
[2023-11-28 20:43:32,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 3646.
[2023-11-28 20:43:32,903 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3646 states, 3645 states have (on average 1.658161865569273) internal successors, (6044), 3645 states have internal predecessors, (6044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:32,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 6044 transitions.
[2023-11-28 20:43:32,908 INFO  L78                 Accepts]: Start accepts. Automaton has 3646 states and 6044 transitions. Word has length 2435
[2023-11-28 20:43:32,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:32,909 INFO  L495      AbstractCegarLoop]: Abstraction has 3646 states and 6044 transitions.
[2023-11-28 20:43:32,910 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:32,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 3646 states and 6044 transitions.
[2023-11-28 20:43:32,940 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2437
[2023-11-28 20:43:32,940 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:32,942 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:32,942 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2023-11-28 20:43:32,942 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:32,942 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:32,943 INFO  L85        PathProgramCache]: Analyzing trace with hash 1708774542, now seen corresponding path program 1 times
[2023-11-28 20:43:32,943 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:32,943 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650797082]
[2023-11-28 20:43:32,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:32,944 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:34,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:38,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-11-28 20:43:38,959 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:38,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650797082]
[2023-11-28 20:43:38,960 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650797082] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:38,960 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:38,960 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:38,960 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649538917]
[2023-11-28 20:43:38,960 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:38,963 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:38,963 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:38,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:38,965 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:38,965 INFO  L87              Difference]: Start difference. First operand 3646 states and 6044 transitions. Second operand  has 4 states, 4 states have (on average 539.75) internal successors, (2159), 4 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:39,069 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:39,069 INFO  L93              Difference]: Finished difference Result 9654 states and 16005 transitions.
[2023-11-28 20:43:39,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:43:39,070 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 539.75) internal successors, (2159), 4 states have internal predecessors, (2159), 0 states have call successors, (0), 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 2436
[2023-11-28 20:43:39,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:39,076 INFO  L225             Difference]: With dead ends: 9654
[2023-11-28 20:43:39,076 INFO  L226             Difference]: Without dead ends: 6599
[2023-11-28 20:43:39,078 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
[2023-11-28 20:43:39,079 INFO  L413           NwaCegarLoop]: 5918 mSDtfsCounter, 4890 mSDsluCounter, 11129 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 17047 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:39,079 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4890 Valid, 17047 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:39,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6599 states.
[2023-11-28 20:43:39,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 3648.
[2023-11-28 20:43:39,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3648 states, 3647 states have (on average 1.657800932273101) internal successors, (6046), 3647 states have internal predecessors, (6046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:39,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 6046 transitions.
[2023-11-28 20:43:39,117 INFO  L78                 Accepts]: Start accepts. Automaton has 3648 states and 6046 transitions. Word has length 2436
[2023-11-28 20:43:39,119 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:39,119 INFO  L495      AbstractCegarLoop]: Abstraction has 3648 states and 6046 transitions.
[2023-11-28 20:43:39,119 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 539.75) internal successors, (2159), 4 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:39,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 3648 states and 6046 transitions.
[2023-11-28 20:43:39,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2438
[2023-11-28 20:43:39,145 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:39,146 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:39,146 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2023-11-28 20:43:39,146 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:39,146 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:39,147 INFO  L85        PathProgramCache]: Analyzing trace with hash 361960890, now seen corresponding path program 1 times
[2023-11-28 20:43:39,147 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:39,147 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793233540]
[2023-11-28 20:43:39,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:39,147 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:40,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:45,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked.
[2023-11-28 20:43:45,201 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:45,201 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793233540]
[2023-11-28 20:43:45,201 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793233540] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:45,201 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:45,202 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:45,202 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115132450]
[2023-11-28 20:43:45,202 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:45,205 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:45,205 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:45,206 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:45,206 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:45,207 INFO  L87              Difference]: Start difference. First operand 3648 states and 6046 transitions. Second operand  has 4 states, 4 states have (on average 540.5) internal successors, (2162), 4 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:45,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:45,314 INFO  L93              Difference]: Finished difference Result 9667 states and 16022 transitions.
[2023-11-28 20:43:45,314 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:43:45,315 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 540.5) internal successors, (2162), 4 states have internal predecessors, (2162), 0 states have call successors, (0), 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 2437
[2023-11-28 20:43:45,316 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:45,321 INFO  L225             Difference]: With dead ends: 9667
[2023-11-28 20:43:45,321 INFO  L226             Difference]: Without dead ends: 6610
[2023-11-28 20:43:45,323 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:43:45,324 INFO  L413           NwaCegarLoop]: 5917 mSDtfsCounter, 4892 mSDsluCounter, 11130 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4892 SdHoareTripleChecker+Valid, 17047 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:45,324 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4892 Valid, 17047 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:45,329 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6610 states.
[2023-11-28 20:43:45,356 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 3651.
[2023-11-28 20:43:45,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3651 states, 3650 states have (on average 1.6578082191780823) internal successors, (6051), 3650 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:45,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 6051 transitions.
[2023-11-28 20:43:45,363 INFO  L78                 Accepts]: Start accepts. Automaton has 3651 states and 6051 transitions. Word has length 2437
[2023-11-28 20:43:45,364 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:45,364 INFO  L495      AbstractCegarLoop]: Abstraction has 3651 states and 6051 transitions.
[2023-11-28 20:43:45,364 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 540.5) internal successors, (2162), 4 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:45,364 INFO  L276                IsEmpty]: Start isEmpty. Operand 3651 states and 6051 transitions.
[2023-11-28 20:43:45,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2439
[2023-11-28 20:43:45,389 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:45,390 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:45,390 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2023-11-28 20:43:45,390 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:45,391 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:45,391 INFO  L85        PathProgramCache]: Analyzing trace with hash 705191592, now seen corresponding path program 1 times
[2023-11-28 20:43:45,391 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:45,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586467392]
[2023-11-28 20:43:45,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:45,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:47,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:51,774 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-11-28 20:43:51,774 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:51,774 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586467392]
[2023-11-28 20:43:51,775 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586467392] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:51,775 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:51,775 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:43:51,775 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732728624]
[2023-11-28 20:43:51,775 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:51,778 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:43:51,778 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:51,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:43:51,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:43:51,781 INFO  L87              Difference]: Start difference. First operand 3651 states and 6051 transitions. Second operand  has 4 states, 4 states have (on average 541.25) internal successors, (2165), 4 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:51,927 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:51,927 INFO  L93              Difference]: Finished difference Result 9669 states and 16026 transitions.
[2023-11-28 20:43:51,928 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:43:51,928 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 541.25) internal successors, (2165), 4 states have internal predecessors, (2165), 0 states have call successors, (0), 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 2438
[2023-11-28 20:43:51,931 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:51,936 INFO  L225             Difference]: With dead ends: 9669
[2023-11-28 20:43:51,936 INFO  L226             Difference]: Without dead ends: 6603
[2023-11-28 20:43:51,938 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
[2023-11-28 20:43:51,939 INFO  L413           NwaCegarLoop]: 5908 mSDtfsCounter, 4887 mSDsluCounter, 11119 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4887 SdHoareTripleChecker+Valid, 17027 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:51,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4887 Valid, 17027 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:51,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6603 states.
[2023-11-28 20:43:51,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 3653.
[2023-11-28 20:43:51,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3653 states, 3652 states have (on average 1.6574479737130339) internal successors, (6053), 3652 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:51,984 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6053 transitions.
[2023-11-28 20:43:51,985 INFO  L78                 Accepts]: Start accepts. Automaton has 3653 states and 6053 transitions. Word has length 2438
[2023-11-28 20:43:51,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:51,986 INFO  L495      AbstractCegarLoop]: Abstraction has 3653 states and 6053 transitions.
[2023-11-28 20:43:51,987 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 541.25) internal successors, (2165), 4 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:51,987 INFO  L276                IsEmpty]: Start isEmpty. Operand 3653 states and 6053 transitions.
[2023-11-28 20:43:52,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2440
[2023-11-28 20:43:52,019 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:52,020 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:52,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2023-11-28 20:43:52,020 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:52,020 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:52,021 INFO  L85        PathProgramCache]: Analyzing trace with hash -1678550946, now seen corresponding path program 1 times
[2023-11-28 20:43:52,021 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:52,021 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300745089]
[2023-11-28 20:43:52,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:52,022 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:54,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:58,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-28 20:43:58,739 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:58,739 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300745089]
[2023-11-28 20:43:58,739 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300745089] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:58,739 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:58,739 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:43:58,740 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608881563]
[2023-11-28 20:43:58,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:58,741 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:43:58,741 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:58,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:43:58,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:43:58,744 INFO  L87              Difference]: Start difference. First operand 3653 states and 6053 transitions. Second operand  has 5 states, 5 states have (on average 433.6) internal successors, (2168), 5 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:58,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:58,887 INFO  L93              Difference]: Finished difference Result 9682 states and 16043 transitions.
[2023-11-28 20:43:58,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:43:58,888 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 433.6) internal successors, (2168), 5 states have internal predecessors, (2168), 0 states have call successors, (0), 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 2439
[2023-11-28 20:43:58,890 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:58,896 INFO  L225             Difference]: With dead ends: 9682
[2023-11-28 20:43:58,896 INFO  L226             Difference]: Without dead ends: 6614
[2023-11-28 20:43:58,899 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:43:58,900 INFO  L413           NwaCegarLoop]: 5906 mSDtfsCounter, 4891 mSDsluCounter, 16005 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 21911 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:58,900 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4891 Valid, 21911 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:43:58,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6614 states.
[2023-11-28 20:43:58,943 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 3656.
[2023-11-28 20:43:58,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3656 states, 3655 states have (on average 1.6574555403556772) internal successors, (6058), 3655 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:58,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 6058 transitions.
[2023-11-28 20:43:58,951 INFO  L78                 Accepts]: Start accepts. Automaton has 3656 states and 6058 transitions. Word has length 2439
[2023-11-28 20:43:58,953 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:58,953 INFO  L495      AbstractCegarLoop]: Abstraction has 3656 states and 6058 transitions.
[2023-11-28 20:43:58,954 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 433.6) internal successors, (2168), 5 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:43:58,954 INFO  L276                IsEmpty]: Start isEmpty. Operand 3656 states and 6058 transitions.
[2023-11-28 20:43:58,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2441
[2023-11-28 20:43:58,984 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:58,984 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:43:58,985 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2023-11-28 20:43:58,985 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:58,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:58,985 INFO  L85        PathProgramCache]: Analyzing trace with hash -32264576, now seen corresponding path program 1 times
[2023-11-28 20:43:58,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:58,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751584448]
[2023-11-28 20:43:58,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:58,986 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:00,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:04,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-11-28 20:44:04,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:04,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751584448]
[2023-11-28 20:44:04,473 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751584448] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:04,473 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:04,473 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:04,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850816722]
[2023-11-28 20:44:04,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:04,475 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:04,475 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:04,477 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:04,477 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:04,477 INFO  L87              Difference]: Start difference. First operand 3656 states and 6058 transitions. Second operand  has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:04,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:04,715 INFO  L93              Difference]: Finished difference Result 9684 states and 16047 transitions.
[2023-11-28 20:44:04,716 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:44:04,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 0 states have call successors, (0), 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 2440
[2023-11-28 20:44:04,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:04,722 INFO  L225             Difference]: With dead ends: 9684
[2023-11-28 20:44:04,722 INFO  L226             Difference]: Without dead ends: 6607
[2023-11-28 20:44:04,724 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
[2023-11-28 20:44:04,725 INFO  L413           NwaCegarLoop]: 5898 mSDtfsCounter, 4884 mSDsluCounter, 11109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 17007 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:04,725 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4884 Valid, 17007 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:04,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6607 states.
[2023-11-28 20:44:04,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 3658.
[2023-11-28 20:44:04,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3658 states, 3657 states have (on average 1.6570959803117309) internal successors, (6060), 3657 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:04,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 6060 transitions.
[2023-11-28 20:44:04,761 INFO  L78                 Accepts]: Start accepts. Automaton has 3658 states and 6060 transitions. Word has length 2440
[2023-11-28 20:44:04,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:04,762 INFO  L495      AbstractCegarLoop]: Abstraction has 3658 states and 6060 transitions.
[2023-11-28 20:44:04,762 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:04,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 3658 states and 6060 transitions.
[2023-11-28 20:44:04,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2442
[2023-11-28 20:44:04,801 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:04,801 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:04,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2023-11-28 20:44:04,802 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:04,802 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:04,802 INFO  L85        PathProgramCache]: Analyzing trace with hash -32094908, now seen corresponding path program 1 times
[2023-11-28 20:44:04,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:04,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582678478]
[2023-11-28 20:44:04,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:04,803 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:06,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:10,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-11-28 20:44:10,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:10,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582678478]
[2023-11-28 20:44:10,762 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582678478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:10,762 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:10,763 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:10,763 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425776045]
[2023-11-28 20:44:10,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:10,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:10,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:10,768 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:10,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:10,769 INFO  L87              Difference]: Start difference. First operand 3658 states and 6060 transitions. Second operand  has 4 states, 4 states have (on average 543.5) internal successors, (2174), 4 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:10,916 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:10,916 INFO  L93              Difference]: Finished difference Result 9697 states and 16064 transitions.
[2023-11-28 20:44:10,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:44:10,917 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 543.5) internal successors, (2174), 4 states have internal predecessors, (2174), 0 states have call successors, (0), 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 2441
[2023-11-28 20:44:10,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:10,924 INFO  L225             Difference]: With dead ends: 9697
[2023-11-28 20:44:10,925 INFO  L226             Difference]: Without dead ends: 6618
[2023-11-28 20:44:10,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:10,928 INFO  L413           NwaCegarLoop]: 5897 mSDtfsCounter, 4886 mSDsluCounter, 11110 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4886 SdHoareTripleChecker+Valid, 17007 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:10,929 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4886 Valid, 17007 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:10,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6618 states.
[2023-11-28 20:44:10,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 3661.
[2023-11-28 20:44:10,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3661 states, 3660 states have (on average 1.657103825136612) internal successors, (6065), 3660 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:10,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 6065 transitions.
[2023-11-28 20:44:10,993 INFO  L78                 Accepts]: Start accepts. Automaton has 3661 states and 6065 transitions. Word has length 2441
[2023-11-28 20:44:10,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:10,996 INFO  L495      AbstractCegarLoop]: Abstraction has 3661 states and 6065 transitions.
[2023-11-28 20:44:10,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 543.5) internal successors, (2174), 4 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:10,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 3661 states and 6065 transitions.
[2023-11-28 20:44:11,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2443
[2023-11-28 20:44:11,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:11,033 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:11,033 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2023-11-28 20:44:11,033 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:11,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:11,034 INFO  L85        PathProgramCache]: Analyzing trace with hash 466146458, now seen corresponding path program 1 times
[2023-11-28 20:44:11,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:11,034 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371915904]
[2023-11-28 20:44:11,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:11,035 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:12,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:17,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-11-28 20:44:17,396 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:17,396 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371915904]
[2023-11-28 20:44:17,396 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371915904] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:17,396 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:17,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:17,396 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581477906]
[2023-11-28 20:44:17,396 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:17,398 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:17,398 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:17,400 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:17,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:17,400 INFO  L87              Difference]: Start difference. First operand 3661 states and 6065 transitions. Second operand  has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:17,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:17,544 INFO  L93              Difference]: Finished difference Result 9706 states and 16079 transitions.
[2023-11-28 20:44:17,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:44:17,545 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 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 2442
[2023-11-28 20:44:17,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:17,554 INFO  L225             Difference]: With dead ends: 9706
[2023-11-28 20:44:17,554 INFO  L226             Difference]: Without dead ends: 6618
[2023-11-28 20:44:17,556 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:17,557 INFO  L413           NwaCegarLoop]: 5887 mSDtfsCounter, 4884 mSDsluCounter, 11100 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 16987 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:17,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4884 Valid, 16987 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:17,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6618 states.
[2023-11-28 20:44:17,601 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 3666.
[2023-11-28 20:44:17,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3666 states, 3665 states have (on average 1.6567530695770805) internal successors, (6072), 3665 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:17,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6072 transitions.
[2023-11-28 20:44:17,609 INFO  L78                 Accepts]: Start accepts. Automaton has 3666 states and 6072 transitions. Word has length 2442
[2023-11-28 20:44:17,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:17,611 INFO  L495      AbstractCegarLoop]: Abstraction has 3666 states and 6072 transitions.
[2023-11-28 20:44:17,612 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:17,612 INFO  L276                IsEmpty]: Start isEmpty. Operand 3666 states and 6072 transitions.
[2023-11-28 20:44:17,730 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2444
[2023-11-28 20:44:17,730 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:17,731 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:17,731 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2023-11-28 20:44:17,731 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:17,732 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:17,733 INFO  L85        PathProgramCache]: Analyzing trace with hash -2099452208, now seen corresponding path program 1 times
[2023-11-28 20:44:17,733 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:17,733 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085427421]
[2023-11-28 20:44:17,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:17,734 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:19,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:23,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-11-28 20:44:23,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:23,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085427421]
[2023-11-28 20:44:23,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085427421] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:23,881 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:23,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:23,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178920381]
[2023-11-28 20:44:23,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:23,884 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:23,884 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:23,887 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:23,887 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:23,888 INFO  L87              Difference]: Start difference. First operand 3666 states and 6072 transitions. Second operand  has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:24,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:24,023 INFO  L93              Difference]: Finished difference Result 9721 states and 16100 transitions.
[2023-11-28 20:44:24,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:44:24,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 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 2443
[2023-11-28 20:44:24,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:24,032 INFO  L225             Difference]: With dead ends: 9721
[2023-11-28 20:44:24,032 INFO  L226             Difference]: Without dead ends: 6622
[2023-11-28 20:44:24,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:24,035 INFO  L413           NwaCegarLoop]: 5877 mSDtfsCounter, 4881 mSDsluCounter, 11090 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 16967 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:24,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4881 Valid, 16967 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:24,042 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6622 states.
[2023-11-28 20:44:24,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 3671.
[2023-11-28 20:44:24,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3671 states, 3670 states have (on average 1.6564032697547684) internal successors, (6079), 3670 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:24,116 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6079 transitions.
[2023-11-28 20:44:24,116 INFO  L78                 Accepts]: Start accepts. Automaton has 3671 states and 6079 transitions. Word has length 2443
[2023-11-28 20:44:24,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:24,118 INFO  L495      AbstractCegarLoop]: Abstraction has 3671 states and 6079 transitions.
[2023-11-28 20:44:24,119 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:24,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 3671 states and 6079 transitions.
[2023-11-28 20:44:24,183 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2445
[2023-11-28 20:44:24,184 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:24,184 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:24,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2023-11-28 20:44:24,185 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:24,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:24,186 INFO  L85        PathProgramCache]: Analyzing trace with hash 108315662, now seen corresponding path program 1 times
[2023-11-28 20:44:24,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:24,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360556570]
[2023-11-28 20:44:24,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:24,186 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:26,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:31,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-11-28 20:44:31,076 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:31,076 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360556570]
[2023-11-28 20:44:31,076 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360556570] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:31,076 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:31,076 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:31,076 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362238055]
[2023-11-28 20:44:31,077 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:31,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:31,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:31,080 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:31,080 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:31,081 INFO  L87              Difference]: Start difference. First operand 3671 states and 6079 transitions. Second operand  has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:31,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:31,215 INFO  L93              Difference]: Finished difference Result 9729 states and 16110 transitions.
[2023-11-28 20:44:31,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:44:31,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 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 2444
[2023-11-28 20:44:31,218 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:31,223 INFO  L225             Difference]: With dead ends: 9729
[2023-11-28 20:44:31,223 INFO  L226             Difference]: Without dead ends: 6619
[2023-11-28 20:44:31,226 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
[2023-11-28 20:44:31,227 INFO  L413           NwaCegarLoop]: 5868 mSDtfsCounter, 4875 mSDsluCounter, 11079 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4875 SdHoareTripleChecker+Valid, 16947 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:31,227 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4875 Valid, 16947 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:31,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6619 states.
[2023-11-28 20:44:31,278 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 3673.
[2023-11-28 20:44:31,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3673 states, 3672 states have (on average 1.6560457516339868) internal successors, (6081), 3672 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:31,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 6081 transitions.
[2023-11-28 20:44:31,289 INFO  L78                 Accepts]: Start accepts. Automaton has 3673 states and 6081 transitions. Word has length 2444
[2023-11-28 20:44:31,291 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:31,292 INFO  L495      AbstractCegarLoop]: Abstraction has 3673 states and 6081 transitions.
[2023-11-28 20:44:31,292 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:31,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 3673 states and 6081 transitions.
[2023-11-28 20:44:31,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2446
[2023-11-28 20:44:31,518 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:31,519 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:31,519 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2023-11-28 20:44:31,519 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:31,519 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:31,520 INFO  L85        PathProgramCache]: Analyzing trace with hash 1208561780, now seen corresponding path program 1 times
[2023-11-28 20:44:31,520 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:31,520 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131726932]
[2023-11-28 20:44:31,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:31,520 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:33,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:38,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2023-11-28 20:44:38,498 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:38,498 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131726932]
[2023-11-28 20:44:38,498 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131726932] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:38,498 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:38,499 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:44:38,499 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608591100]
[2023-11-28 20:44:38,499 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:38,501 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:44:38,501 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:38,502 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:44:38,502 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:38,503 INFO  L87              Difference]: Start difference. First operand 3673 states and 6081 transitions. Second operand  has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:38,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:38,675 INFO  L93              Difference]: Finished difference Result 9742 states and 16127 transitions.
[2023-11-28 20:44:38,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:44:38,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 0 states have call successors, (0), 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 2445
[2023-11-28 20:44:38,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:38,683 INFO  L225             Difference]: With dead ends: 9742
[2023-11-28 20:44:38,683 INFO  L226             Difference]: Without dead ends: 6630
[2023-11-28 20:44:38,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:44:38,686 INFO  L413           NwaCegarLoop]: 5866 mSDtfsCounter, 4879 mSDsluCounter, 15953 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 21819 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:38,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4879 Valid, 21819 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:38,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6630 states.
[2023-11-28 20:44:38,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 3676.
[2023-11-28 20:44:38,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3676 states, 3675 states have (on average 1.6560544217687074) internal successors, (6086), 3675 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:38,737 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 6086 transitions.
[2023-11-28 20:44:38,737 INFO  L78                 Accepts]: Start accepts. Automaton has 3676 states and 6086 transitions. Word has length 2445
[2023-11-28 20:44:38,739 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:38,739 INFO  L495      AbstractCegarLoop]: Abstraction has 3676 states and 6086 transitions.
[2023-11-28 20:44:38,740 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:38,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 3676 states and 6086 transitions.
[2023-11-28 20:44:38,770 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2447
[2023-11-28 20:44:38,770 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:38,771 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:38,771 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2023-11-28 20:44:38,771 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:38,772 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:38,772 INFO  L85        PathProgramCache]: Analyzing trace with hash 323749862, now seen corresponding path program 1 times
[2023-11-28 20:44:38,772 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:38,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546814097]
[2023-11-28 20:44:38,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:38,773 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:41,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:45,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-11-28 20:44:45,398 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:45,398 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546814097]
[2023-11-28 20:44:45,398 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546814097] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:45,399 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:45,399 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:45,400 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549477951]
[2023-11-28 20:44:45,400 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:45,401 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:45,402 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:45,403 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:45,403 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:45,404 INFO  L87              Difference]: Start difference. First operand 3676 states and 6086 transitions. Second operand  has 4 states, 4 states have (on average 548.25) internal successors, (2193), 4 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:45,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:45,538 INFO  L93              Difference]: Finished difference Result 9744 states and 16131 transitions.
[2023-11-28 20:44:45,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:44:45,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 548.25) internal successors, (2193), 4 states have internal predecessors, (2193), 0 states have call successors, (0), 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 2446
[2023-11-28 20:44:45,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:45,547 INFO  L225             Difference]: With dead ends: 9744
[2023-11-28 20:44:45,547 INFO  L226             Difference]: Without dead ends: 6623
[2023-11-28 20:44:45,550 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
[2023-11-28 20:44:45,551 INFO  L413           NwaCegarLoop]: 5858 mSDtfsCounter, 4872 mSDsluCounter, 11069 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 16927 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:45,551 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 16927 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:45,557 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6623 states.
[2023-11-28 20:44:45,592 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6623 to 3678.
[2023-11-28 20:44:45,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3678 states, 3677 states have (on average 1.655697579548545) internal successors, (6088), 3677 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:45,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 6088 transitions.
[2023-11-28 20:44:45,600 INFO  L78                 Accepts]: Start accepts. Automaton has 3678 states and 6088 transitions. Word has length 2446
[2023-11-28 20:44:45,602 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:45,602 INFO  L495      AbstractCegarLoop]: Abstraction has 3678 states and 6088 transitions.
[2023-11-28 20:44:45,603 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 548.25) internal successors, (2193), 4 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:45,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 3678 states and 6088 transitions.
[2023-11-28 20:44:45,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2448
[2023-11-28 20:44:45,634 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:45,635 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:45,635 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2023-11-28 20:44:45,635 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:45,635 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:45,636 INFO  L85        PathProgramCache]: Analyzing trace with hash -2003327270, now seen corresponding path program 1 times
[2023-11-28 20:44:45,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:45,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784438288]
[2023-11-28 20:44:45,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:45,636 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:47,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:51,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2023-11-28 20:44:51,591 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:51,592 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784438288]
[2023-11-28 20:44:51,592 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784438288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:51,592 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:51,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:51,592 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567848844]
[2023-11-28 20:44:51,592 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:51,594 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:51,594 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:51,595 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:51,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:51,596 INFO  L87              Difference]: Start difference. First operand 3678 states and 6088 transitions. Second operand  has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:51,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:51,731 INFO  L93              Difference]: Finished difference Result 9757 states and 16148 transitions.
[2023-11-28 20:44:51,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:44:51,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 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 2447
[2023-11-28 20:44:51,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:51,740 INFO  L225             Difference]: With dead ends: 9757
[2023-11-28 20:44:51,741 INFO  L226             Difference]: Without dead ends: 6634
[2023-11-28 20:44:51,743 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:51,744 INFO  L413           NwaCegarLoop]: 5857 mSDtfsCounter, 4874 mSDsluCounter, 11070 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 16927 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:51,744 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4874 Valid, 16927 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:51,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6634 states.
[2023-11-28 20:44:51,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 3681.
[2023-11-28 20:44:51,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3681 states, 3680 states have (on average 1.6557065217391305) internal successors, (6093), 3680 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:51,793 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 6093 transitions.
[2023-11-28 20:44:51,793 INFO  L78                 Accepts]: Start accepts. Automaton has 3681 states and 6093 transitions. Word has length 2447
[2023-11-28 20:44:51,794 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:51,794 INFO  L495      AbstractCegarLoop]: Abstraction has 3681 states and 6093 transitions.
[2023-11-28 20:44:51,795 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:51,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 3681 states and 6093 transitions.
[2023-11-28 20:44:51,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2449
[2023-11-28 20:44:51,825 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:51,826 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:51,826 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2023-11-28 20:44:51,826 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:51,826 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:51,827 INFO  L85        PathProgramCache]: Analyzing trace with hash 1368433792, now seen corresponding path program 1 times
[2023-11-28 20:44:51,827 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:51,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271684751]
[2023-11-28 20:44:51,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:51,827 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:54,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:58,969 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-11-28 20:44:58,969 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:58,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271684751]
[2023-11-28 20:44:58,969 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271684751] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:58,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:58,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:44:58,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404127152]
[2023-11-28 20:44:58,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:58,972 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:44:58,972 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:58,973 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:44:58,973 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:44:58,974 INFO  L87              Difference]: Start difference. First operand 3681 states and 6093 transitions. Second operand  has 4 states, 4 states have (on average 550.25) internal successors, (2201), 4 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:59,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:59,085 INFO  L93              Difference]: Finished difference Result 9766 states and 16163 transitions.
[2023-11-28 20:44:59,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:44:59,086 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 550.25) internal successors, (2201), 4 states have internal predecessors, (2201), 0 states have call successors, (0), 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 2448
[2023-11-28 20:44:59,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:59,093 INFO  L225             Difference]: With dead ends: 9766
[2023-11-28 20:44:59,093 INFO  L226             Difference]: Without dead ends: 6634
[2023-11-28 20:44:59,095 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:44:59,095 INFO  L413           NwaCegarLoop]: 5847 mSDtfsCounter, 4872 mSDsluCounter, 11060 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 16907 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:59,096 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 16907 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:44:59,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6634 states.
[2023-11-28 20:44:59,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 3686.
[2023-11-28 20:44:59,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3686 states, 3685 states have (on average 1.655359565807327) internal successors, (6100), 3685 states have internal predecessors, (6100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:59,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 6100 transitions.
[2023-11-28 20:44:59,132 INFO  L78                 Accepts]: Start accepts. Automaton has 3686 states and 6100 transitions. Word has length 2448
[2023-11-28 20:44:59,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:59,133 INFO  L495      AbstractCegarLoop]: Abstraction has 3686 states and 6100 transitions.
[2023-11-28 20:44:59,134 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 550.25) internal successors, (2201), 4 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:44:59,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 3686 states and 6100 transitions.
[2023-11-28 20:44:59,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2450
[2023-11-28 20:44:59,158 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:59,159 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:44:59,159 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2023-11-28 20:44:59,159 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:59,159 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:59,159 INFO  L85        PathProgramCache]: Analyzing trace with hash -911888026, now seen corresponding path program 1 times
[2023-11-28 20:44:59,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:59,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509887998]
[2023-11-28 20:44:59,160 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:59,160 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:00,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:05,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-11-28 20:45:05,164 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:05,164 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509887998]
[2023-11-28 20:45:05,164 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509887998] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:05,164 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:05,165 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:05,165 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497006209]
[2023-11-28 20:45:05,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:05,167 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:05,167 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:05,168 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:05,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:05,169 INFO  L87              Difference]: Start difference. First operand 3686 states and 6100 transitions. Second operand  has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:05,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:05,275 INFO  L93              Difference]: Finished difference Result 9778 states and 16179 transitions.
[2023-11-28 20:45:05,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:05,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 2449
[2023-11-28 20:45:05,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:05,283 INFO  L225             Difference]: With dead ends: 9778
[2023-11-28 20:45:05,284 INFO  L226             Difference]: Without dead ends: 6635
[2023-11-28 20:45:05,286 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:05,286 INFO  L413           NwaCegarLoop]: 5842 mSDtfsCounter, 4871 mSDsluCounter, 11055 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4871 SdHoareTripleChecker+Valid, 16897 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:05,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4871 Valid, 16897 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:05,292 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6635 states.
[2023-11-28 20:45:05,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 3688.
[2023-11-28 20:45:05,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3688 states, 3687 states have (on average 1.6550040683482505) internal successors, (6102), 3687 states have internal predecessors, (6102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:05,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 6102 transitions.
[2023-11-28 20:45:05,326 INFO  L78                 Accepts]: Start accepts. Automaton has 3688 states and 6102 transitions. Word has length 2449
[2023-11-28 20:45:05,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:05,327 INFO  L495      AbstractCegarLoop]: Abstraction has 3688 states and 6102 transitions.
[2023-11-28 20:45:05,328 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:05,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 3688 states and 6102 transitions.
[2023-11-28 20:45:05,352 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2451
[2023-11-28 20:45:05,352 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:05,353 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:05,353 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2023-11-28 20:45:05,353 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:05,353 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:05,354 INFO  L85        PathProgramCache]: Analyzing trace with hash -229096102, now seen corresponding path program 1 times
[2023-11-28 20:45:05,354 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:05,354 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343311552]
[2023-11-28 20:45:05,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:05,354 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:07,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:11,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2023-11-28 20:45:11,614 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:11,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343311552]
[2023-11-28 20:45:11,614 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343311552] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:11,614 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:11,615 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:11,615 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526696668]
[2023-11-28 20:45:11,615 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:11,617 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:11,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:11,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:11,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:11,619 INFO  L87              Difference]: Start difference. First operand 3688 states and 6102 transitions. Second operand  has 4 states, 4 states have (on average 552.25) internal successors, (2209), 4 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:11,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:11,759 INFO  L93              Difference]: Finished difference Result 9787 states and 16190 transitions.
[2023-11-28 20:45:11,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:11,760 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 552.25) internal successors, (2209), 4 states have internal predecessors, (2209), 0 states have call successors, (0), 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 2450
[2023-11-28 20:45:11,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:11,783 INFO  L225             Difference]: With dead ends: 9787
[2023-11-28 20:45:11,783 INFO  L226             Difference]: Without dead ends: 6639
[2023-11-28 20:45:11,784 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:11,784 INFO  L413           NwaCegarLoop]: 5832 mSDtfsCounter, 4866 mSDsluCounter, 11045 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 16877 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:11,784 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4866 Valid, 16877 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:11,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6639 states.
[2023-11-28 20:45:11,814 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 3693.
[2023-11-28 20:45:11,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3693 states, 3692 states have (on average 1.65465872156013) internal successors, (6109), 3692 states have internal predecessors, (6109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:11,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6109 transitions.
[2023-11-28 20:45:11,820 INFO  L78                 Accepts]: Start accepts. Automaton has 3693 states and 6109 transitions. Word has length 2450
[2023-11-28 20:45:11,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:11,821 INFO  L495      AbstractCegarLoop]: Abstraction has 3693 states and 6109 transitions.
[2023-11-28 20:45:11,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 552.25) internal successors, (2209), 4 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:11,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 3693 states and 6109 transitions.
[2023-11-28 20:45:11,848 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2452
[2023-11-28 20:45:11,848 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:11,849 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:11,849 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2023-11-28 20:45:11,850 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:11,850 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:11,851 INFO  L85        PathProgramCache]: Analyzing trace with hash -1649550224, now seen corresponding path program 1 times
[2023-11-28 20:45:11,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:11,851 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925502327]
[2023-11-28 20:45:11,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:11,852 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:13,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:17,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2023-11-28 20:45:17,784 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:17,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925502327]
[2023-11-28 20:45:17,784 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925502327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:17,784 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:17,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:17,785 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480605289]
[2023-11-28 20:45:17,785 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:17,786 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:17,786 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:17,788 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:17,788 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:17,788 INFO  L87              Difference]: Start difference. First operand 3693 states and 6109 transitions. Second operand  has 4 states, 4 states have (on average 553.5) internal successors, (2214), 4 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:17,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:17,921 INFO  L93              Difference]: Finished difference Result 9802 states and 16211 transitions.
[2023-11-28 20:45:17,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:17,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 553.5) internal successors, (2214), 4 states have internal predecessors, (2214), 0 states have call successors, (0), 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 2451
[2023-11-28 20:45:17,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:17,932 INFO  L225             Difference]: With dead ends: 9802
[2023-11-28 20:45:17,932 INFO  L226             Difference]: Without dead ends: 6643
[2023-11-28 20:45:17,935 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:17,936 INFO  L413           NwaCegarLoop]: 5822 mSDtfsCounter, 4863 mSDsluCounter, 11035 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 16857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:17,936 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4863 Valid, 16857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:17,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6643 states.
[2023-11-28 20:45:17,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 3698.
[2023-11-28 20:45:17,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3698 states, 3697 states have (on average 1.6543143088991075) internal successors, (6116), 3697 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:17,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 6116 transitions.
[2023-11-28 20:45:17,993 INFO  L78                 Accepts]: Start accepts. Automaton has 3698 states and 6116 transitions. Word has length 2451
[2023-11-28 20:45:17,994 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:17,995 INFO  L495      AbstractCegarLoop]: Abstraction has 3698 states and 6116 transitions.
[2023-11-28 20:45:17,995 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 553.5) internal successors, (2214), 4 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:17,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 3698 states and 6116 transitions.
[2023-11-28 20:45:18,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2453
[2023-11-28 20:45:18,026 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:18,026 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:18,026 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2023-11-28 20:45:18,027 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:18,027 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:18,027 INFO  L85        PathProgramCache]: Analyzing trace with hash 745744588, now seen corresponding path program 1 times
[2023-11-28 20:45:18,027 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:18,027 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170679973]
[2023-11-28 20:45:18,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:18,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:20,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:24,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2023-11-28 20:45:24,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:24,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170679973]
[2023-11-28 20:45:24,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170679973] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:24,135 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:24,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:24,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947922115]
[2023-11-28 20:45:24,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:24,137 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:24,137 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:24,138 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:24,139 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:24,139 INFO  L87              Difference]: Start difference. First operand 3698 states and 6116 transitions. Second operand  has 4 states, 4 states have (on average 554.25) internal successors, (2217), 4 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:24,295 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:24,295 INFO  L93              Difference]: Finished difference Result 9810 states and 16221 transitions.
[2023-11-28 20:45:24,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:45:24,297 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 554.25) internal successors, (2217), 4 states have internal predecessors, (2217), 0 states have call successors, (0), 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 2452
[2023-11-28 20:45:24,300 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:24,307 INFO  L225             Difference]: With dead ends: 9810
[2023-11-28 20:45:24,307 INFO  L226             Difference]: Without dead ends: 6640
[2023-11-28 20:45:24,310 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
[2023-11-28 20:45:24,311 INFO  L413           NwaCegarLoop]: 5813 mSDtfsCounter, 4857 mSDsluCounter, 11024 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 16837 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:24,311 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 16837 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:24,320 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6640 states.
[2023-11-28 20:45:24,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3700.
[2023-11-28 20:45:24,377 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3700 states, 3699 states have (on average 1.6539605298729387) internal successors, (6118), 3699 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:24,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 6118 transitions.
[2023-11-28 20:45:24,385 INFO  L78                 Accepts]: Start accepts. Automaton has 3700 states and 6118 transitions. Word has length 2452
[2023-11-28 20:45:24,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:24,388 INFO  L495      AbstractCegarLoop]: Abstraction has 3700 states and 6118 transitions.
[2023-11-28 20:45:24,388 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 554.25) internal successors, (2217), 4 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:24,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 3700 states and 6118 transitions.
[2023-11-28 20:45:24,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2454
[2023-11-28 20:45:24,424 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:24,426 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:24,426 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2023-11-28 20:45:24,426 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:24,426 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:24,427 INFO  L85        PathProgramCache]: Analyzing trace with hash -308388330, now seen corresponding path program 1 times
[2023-11-28 20:45:24,427 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:24,428 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507396813]
[2023-11-28 20:45:24,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:24,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:26,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:31,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked.
[2023-11-28 20:45:31,436 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:31,436 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507396813]
[2023-11-28 20:45:31,436 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507396813] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:31,436 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:31,437 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:31,437 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049836969]
[2023-11-28 20:45:31,438 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:31,440 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:31,440 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:31,443 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:31,443 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:31,444 INFO  L87              Difference]: Start difference. First operand 3700 states and 6118 transitions. Second operand  has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:31,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:31,619 INFO  L93              Difference]: Finished difference Result 9823 states and 16238 transitions.
[2023-11-28 20:45:31,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:31,620 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 0 states have call successors, (0), 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 2453
[2023-11-28 20:45:31,621 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:31,627 INFO  L225             Difference]: With dead ends: 9823
[2023-11-28 20:45:31,627 INFO  L226             Difference]: Without dead ends: 6651
[2023-11-28 20:45:31,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:31,630 INFO  L413           NwaCegarLoop]: 5812 mSDtfsCounter, 4859 mSDsluCounter, 11025 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4859 SdHoareTripleChecker+Valid, 16837 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:31,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4859 Valid, 16837 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:31,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6651 states.
[2023-11-28 20:45:31,671 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 3703.
[2023-11-28 20:45:31,675 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3703 states, 3702 states have (on average 1.6539708265802269) internal successors, (6123), 3702 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:31,679 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 6123 transitions.
[2023-11-28 20:45:31,679 INFO  L78                 Accepts]: Start accepts. Automaton has 3703 states and 6123 transitions. Word has length 2453
[2023-11-28 20:45:31,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:31,681 INFO  L495      AbstractCegarLoop]: Abstraction has 3703 states and 6123 transitions.
[2023-11-28 20:45:31,682 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:31,682 INFO  L276                IsEmpty]: Start isEmpty. Operand 3703 states and 6123 transitions.
[2023-11-28 20:45:31,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2455
[2023-11-28 20:45:31,713 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:31,713 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:31,713 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2023-11-28 20:45:31,713 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:31,714 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:31,714 INFO  L85        PathProgramCache]: Analyzing trace with hash 1884028072, now seen corresponding path program 1 times
[2023-11-28 20:45:31,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:31,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609723361]
[2023-11-28 20:45:31,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:31,715 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:33,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:37,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked.
[2023-11-28 20:45:37,949 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:37,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609723361]
[2023-11-28 20:45:37,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609723361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:37,950 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:37,950 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:37,950 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681522433]
[2023-11-28 20:45:37,951 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:37,953 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:37,953 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:37,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:37,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:37,956 INFO  L87              Difference]: Start difference. First operand 3703 states and 6123 transitions. Second operand  has 4 states, 4 states have (on average 556.25) internal successors, (2225), 4 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:38,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:38,092 INFO  L93              Difference]: Finished difference Result 9832 states and 16253 transitions.
[2023-11-28 20:45:38,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:38,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 556.25) internal successors, (2225), 4 states have internal predecessors, (2225), 0 states have call successors, (0), 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 2454
[2023-11-28 20:45:38,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:38,102 INFO  L225             Difference]: With dead ends: 9832
[2023-11-28 20:45:38,103 INFO  L226             Difference]: Without dead ends: 6651
[2023-11-28 20:45:38,105 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:38,106 INFO  L413           NwaCegarLoop]: 5802 mSDtfsCounter, 4857 mSDsluCounter, 11015 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 16817 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:38,106 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 16817 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:38,112 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6651 states.
[2023-11-28 20:45:38,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 3708.
[2023-11-28 20:45:38,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3708 states, 3707 states have (on average 1.6536282708389534) internal successors, (6130), 3707 states have internal predecessors, (6130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:38,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 6130 transitions.
[2023-11-28 20:45:38,157 INFO  L78                 Accepts]: Start accepts. Automaton has 3708 states and 6130 transitions. Word has length 2454
[2023-11-28 20:45:38,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:38,158 INFO  L495      AbstractCegarLoop]: Abstraction has 3708 states and 6130 transitions.
[2023-11-28 20:45:38,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 556.25) internal successors, (2225), 4 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:38,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 3708 states and 6130 transitions.
[2023-11-28 20:45:38,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2456
[2023-11-28 20:45:38,190 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:38,191 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:38,191 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2023-11-28 20:45:38,191 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:38,191 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:38,192 INFO  L85        PathProgramCache]: Analyzing trace with hash -1670435740, now seen corresponding path program 1 times
[2023-11-28 20:45:38,192 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:38,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970829492]
[2023-11-28 20:45:38,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:38,193 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:40,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:45,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2023-11-28 20:45:45,157 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:45,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970829492]
[2023-11-28 20:45:45,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970829492] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:45,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:45,157 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:45,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056443993]
[2023-11-28 20:45:45,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:45,159 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:45,160 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:45,161 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:45,161 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:45,162 INFO  L87              Difference]: Start difference. First operand 3708 states and 6130 transitions. Second operand  has 4 states, 4 states have (on average 557.5) internal successors, (2230), 4 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:45,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:45,290 INFO  L93              Difference]: Finished difference Result 9847 states and 16274 transitions.
[2023-11-28 20:45:45,290 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:45,291 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 557.5) internal successors, (2230), 4 states have internal predecessors, (2230), 0 states have call successors, (0), 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 2455
[2023-11-28 20:45:45,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:45,298 INFO  L225             Difference]: With dead ends: 9847
[2023-11-28 20:45:45,298 INFO  L226             Difference]: Without dead ends: 6655
[2023-11-28 20:45:45,301 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:45,301 INFO  L413           NwaCegarLoop]: 5792 mSDtfsCounter, 4854 mSDsluCounter, 11005 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 16797 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:45,302 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4854 Valid, 16797 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:45,309 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6655 states.
[2023-11-28 20:45:45,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 3713.
[2023-11-28 20:45:45,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3713 states, 3712 states have (on average 1.6532866379310345) internal successors, (6137), 3712 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:45,354 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6137 transitions.
[2023-11-28 20:45:45,354 INFO  L78                 Accepts]: Start accepts. Automaton has 3713 states and 6137 transitions. Word has length 2455
[2023-11-28 20:45:45,355 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:45,355 INFO  L495      AbstractCegarLoop]: Abstraction has 3713 states and 6137 transitions.
[2023-11-28 20:45:45,356 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 557.5) internal successors, (2230), 4 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:45,356 INFO  L276                IsEmpty]: Start isEmpty. Operand 3713 states and 6137 transitions.
[2023-11-28 20:45:45,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2457
[2023-11-28 20:45:45,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:45,388 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:45,388 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2023-11-28 20:45:45,388 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:45,388 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:45,389 INFO  L85        PathProgramCache]: Analyzing trace with hash -1483316770, now seen corresponding path program 1 times
[2023-11-28 20:45:45,389 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:45,389 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400588559]
[2023-11-28 20:45:45,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:45,389 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:47,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:52,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked.
[2023-11-28 20:45:52,556 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:52,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400588559]
[2023-11-28 20:45:52,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400588559] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:52,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:52,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:52,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124554667]
[2023-11-28 20:45:52,557 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:52,558 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:52,558 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:52,559 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:52,559 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:52,560 INFO  L87              Difference]: Start difference. First operand 3713 states and 6137 transitions. Second operand  has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:52,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:52,670 INFO  L93              Difference]: Finished difference Result 9862 states and 16295 transitions.
[2023-11-28 20:45:52,670 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:45:52,671 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 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 2456
[2023-11-28 20:45:52,672 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:52,677 INFO  L225             Difference]: With dead ends: 9862
[2023-11-28 20:45:52,677 INFO  L226             Difference]: Without dead ends: 6659
[2023-11-28 20:45:52,679 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:45:52,680 INFO  L413           NwaCegarLoop]: 5782 mSDtfsCounter, 4851 mSDsluCounter, 10995 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 16777 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:52,680 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 16777 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:52,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6659 states.
[2023-11-28 20:45:52,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6659 to 3718.
[2023-11-28 20:45:52,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3718 states, 3717 states have (on average 1.6529459241323647) internal successors, (6144), 3717 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:52,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 6144 transitions.
[2023-11-28 20:45:52,718 INFO  L78                 Accepts]: Start accepts. Automaton has 3718 states and 6144 transitions. Word has length 2456
[2023-11-28 20:45:52,719 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:52,719 INFO  L495      AbstractCegarLoop]: Abstraction has 3718 states and 6144 transitions.
[2023-11-28 20:45:52,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:52,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 3718 states and 6144 transitions.
[2023-11-28 20:45:52,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2458
[2023-11-28 20:45:52,744 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:52,744 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:52,744 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2023-11-28 20:45:52,745 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:52,745 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:52,745 INFO  L85        PathProgramCache]: Analyzing trace with hash -337011150, now seen corresponding path program 1 times
[2023-11-28 20:45:52,745 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:52,745 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296401803]
[2023-11-28 20:45:52,745 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:52,746 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:54,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:45:58,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-11-28 20:45:58,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:45:58,866 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296401803]
[2023-11-28 20:45:58,866 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296401803] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:45:58,866 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:45:58,867 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:45:58,867 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774241926]
[2023-11-28 20:45:58,867 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:45:58,868 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:45:58,869 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:45:58,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:45:58,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:45:58,871 INFO  L87              Difference]: Start difference. First operand 3718 states and 6144 transitions. Second operand  has 4 states, 4 states have (on average 559.5) internal successors, (2238), 4 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:59,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:59,001 INFO  L93              Difference]: Finished difference Result 9870 states and 16305 transitions.
[2023-11-28 20:45:59,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:45:59,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 559.5) internal successors, (2238), 4 states have internal predecessors, (2238), 0 states have call successors, (0), 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 2457
[2023-11-28 20:45:59,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:59,009 INFO  L225             Difference]: With dead ends: 9870
[2023-11-28 20:45:59,009 INFO  L226             Difference]: Without dead ends: 6656
[2023-11-28 20:45:59,013 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
[2023-11-28 20:45:59,014 INFO  L413           NwaCegarLoop]: 5773 mSDtfsCounter, 4845 mSDsluCounter, 10984 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4845 SdHoareTripleChecker+Valid, 16757 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:59,014 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4845 Valid, 16757 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:45:59,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6656 states.
[2023-11-28 20:45:59,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6656 to 3720.
[2023-11-28 20:45:59,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3720 states, 3719 states have (on average 1.6525947835439634) internal successors, (6146), 3719 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:59,103 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6146 transitions.
[2023-11-28 20:45:59,103 INFO  L78                 Accepts]: Start accepts. Automaton has 3720 states and 6146 transitions. Word has length 2457
[2023-11-28 20:45:59,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:59,105 INFO  L495      AbstractCegarLoop]: Abstraction has 3720 states and 6146 transitions.
[2023-11-28 20:45:59,106 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 559.5) internal successors, (2238), 4 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:45:59,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 3720 states and 6146 transitions.
[2023-11-28 20:45:59,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2459
[2023-11-28 20:45:59,136 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:59,137 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:45:59,137 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2023-11-28 20:45:59,137 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:59,137 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:59,138 INFO  L85        PathProgramCache]: Analyzing trace with hash -1683592712, now seen corresponding path program 1 times
[2023-11-28 20:45:59,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:59,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526446465]
[2023-11-28 20:45:59,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:59,139 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:01,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:05,943 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-11-28 20:46:05,943 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:05,943 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526446465]
[2023-11-28 20:46:05,943 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526446465] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:05,943 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:05,944 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:46:05,944 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45570038]
[2023-11-28 20:46:05,944 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:05,945 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:05,945 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:05,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:05,946 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:46:05,947 INFO  L87              Difference]: Start difference. First operand 3720 states and 6146 transitions. Second operand  has 4 states, 4 states have (on average 560.25) internal successors, (2241), 4 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:06,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:06,061 INFO  L93              Difference]: Finished difference Result 9883 states and 16322 transitions.
[2023-11-28 20:46:06,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:46:06,062 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 560.25) internal successors, (2241), 4 states have internal predecessors, (2241), 0 states have call successors, (0), 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 2458
[2023-11-28 20:46:06,064 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:06,069 INFO  L225             Difference]: With dead ends: 9883
[2023-11-28 20:46:06,069 INFO  L226             Difference]: Without dead ends: 6667
[2023-11-28 20:46:06,071 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:46:06,071 INFO  L413           NwaCegarLoop]: 5772 mSDtfsCounter, 4847 mSDsluCounter, 10985 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 16757 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:06,072 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4847 Valid, 16757 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:06,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6667 states.
[2023-11-28 20:46:06,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 3723.
[2023-11-28 20:46:06,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3723 states, 3722 states have (on average 1.65260612573885) internal successors, (6151), 3722 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:06,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 6151 transitions.
[2023-11-28 20:46:06,110 INFO  L78                 Accepts]: Start accepts. Automaton has 3723 states and 6151 transitions. Word has length 2458
[2023-11-28 20:46:06,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:06,111 INFO  L495      AbstractCegarLoop]: Abstraction has 3723 states and 6151 transitions.
[2023-11-28 20:46:06,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 560.25) internal successors, (2241), 4 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:06,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 3723 states and 6151 transitions.
[2023-11-28 20:46:06,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2460
[2023-11-28 20:46:06,136 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:06,137 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:06,137 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2023-11-28 20:46:06,137 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:06,137 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:06,137 INFO  L85        PathProgramCache]: Analyzing trace with hash -1972574762, now seen corresponding path program 1 times
[2023-11-28 20:46:06,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:06,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474329]
[2023-11-28 20:46:06,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:06,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:07,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:12,259 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2023-11-28 20:46:12,259 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:12,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474329]
[2023-11-28 20:46:12,259 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474329] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:12,259 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:12,260 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:46:12,260 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272772063]
[2023-11-28 20:46:12,260 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:12,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:12,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:12,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:12,262 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:46:12,263 INFO  L87              Difference]: Start difference. First operand 3723 states and 6151 transitions. Second operand  has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:12,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:12,372 INFO  L93              Difference]: Finished difference Result 9885 states and 16326 transitions.
[2023-11-28 20:46:12,372 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:46:12,373 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 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 2459
[2023-11-28 20:46:12,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:12,379 INFO  L225             Difference]: With dead ends: 9885
[2023-11-28 20:46:12,380 INFO  L226             Difference]: Without dead ends: 6660
[2023-11-28 20:46:12,382 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
[2023-11-28 20:46:12,382 INFO  L413           NwaCegarLoop]: 5763 mSDtfsCounter, 4842 mSDsluCounter, 10974 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 16737 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:12,383 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4842 Valid, 16737 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:12,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6660 states.
[2023-11-28 20:46:12,419 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6660 to 3725.
[2023-11-28 20:46:12,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3725 states, 3724 states have (on average 1.6522556390977443) internal successors, (6153), 3724 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:12,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 6153 transitions.
[2023-11-28 20:46:12,426 INFO  L78                 Accepts]: Start accepts. Automaton has 3725 states and 6153 transitions. Word has length 2459
[2023-11-28 20:46:12,428 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:12,428 INFO  L495      AbstractCegarLoop]: Abstraction has 3725 states and 6153 transitions.
[2023-11-28 20:46:12,428 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:12,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 3725 states and 6153 transitions.
[2023-11-28 20:46:12,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2461
[2023-11-28 20:46:12,455 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:12,455 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:12,455 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2023-11-28 20:46:12,455 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:12,455 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:12,456 INFO  L85        PathProgramCache]: Analyzing trace with hash 1188584144, now seen corresponding path program 1 times
[2023-11-28 20:46:12,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:12,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849941949]
[2023-11-28 20:46:12,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:12,456 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:14,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:18,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked.
[2023-11-28 20:46:18,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:18,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849941949]
[2023-11-28 20:46:18,731 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849941949] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:18,731 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:18,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:46:18,732 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290260046]
[2023-11-28 20:46:18,732 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:18,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:18,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:18,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:18,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:46:18,735 INFO  L87              Difference]: Start difference. First operand 3725 states and 6153 transitions. Second operand  has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:18,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:18,848 INFO  L93              Difference]: Finished difference Result 9898 states and 16343 transitions.
[2023-11-28 20:46:18,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:46:18,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 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 2460
[2023-11-28 20:46:18,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:18,855 INFO  L225             Difference]: With dead ends: 9898
[2023-11-28 20:46:18,855 INFO  L226             Difference]: Without dead ends: 6671
[2023-11-28 20:46:18,857 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:46:18,858 INFO  L413           NwaCegarLoop]: 5762 mSDtfsCounter, 4844 mSDsluCounter, 10975 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 16737 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:18,858 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 16737 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:18,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6671 states.
[2023-11-28 20:46:18,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6671 to 3728.
[2023-11-28 20:46:18,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3728 states, 3727 states have (on average 1.6522672390662732) internal successors, (6158), 3727 states have internal predecessors, (6158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:18,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6158 transitions.
[2023-11-28 20:46:18,895 INFO  L78                 Accepts]: Start accepts. Automaton has 3728 states and 6158 transitions. Word has length 2460
[2023-11-28 20:46:18,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:18,896 INFO  L495      AbstractCegarLoop]: Abstraction has 3728 states and 6158 transitions.
[2023-11-28 20:46:18,896 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:18,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 3728 states and 6158 transitions.
[2023-11-28 20:46:18,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2462
[2023-11-28 20:46:18,921 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:18,921 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:18,921 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2023-11-28 20:46:18,921 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:18,922 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:18,922 INFO  L85        PathProgramCache]: Analyzing trace with hash -610421572, now seen corresponding path program 1 times
[2023-11-28 20:46:18,922 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:18,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234510144]
[2023-11-28 20:46:18,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:18,922 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:20,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:24,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-11-28 20:46:24,842 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:24,842 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234510144]
[2023-11-28 20:46:24,842 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234510144] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:24,842 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:24,842 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:46:24,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985498630]
[2023-11-28 20:46:24,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:24,844 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:24,844 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:24,846 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:24,846 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:46:24,846 INFO  L87              Difference]: Start difference. First operand 3728 states and 6158 transitions. Second operand  has 4 states, 4 states have (on average 562.5) internal successors, (2250), 4 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:24,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:24,987 INFO  L93              Difference]: Finished difference Result 9900 states and 16347 transitions.
[2023-11-28 20:46:24,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:46:24,988 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 562.5) internal successors, (2250), 4 states have internal predecessors, (2250), 0 states have call successors, (0), 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 2461
[2023-11-28 20:46:24,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:24,996 INFO  L225             Difference]: With dead ends: 9900
[2023-11-28 20:46:24,996 INFO  L226             Difference]: Without dead ends: 6664
[2023-11-28 20:46:24,999 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
[2023-11-28 20:46:24,999 INFO  L413           NwaCegarLoop]: 5753 mSDtfsCounter, 4839 mSDsluCounter, 10964 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 16717 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:25,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 16717 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:25,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6664 states.
[2023-11-28 20:46:25,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 3730.
[2023-11-28 20:46:25,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3730 states, 3729 states have (on average 1.6519174041297935) internal successors, (6160), 3729 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:25,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 6160 transitions.
[2023-11-28 20:46:25,053 INFO  L78                 Accepts]: Start accepts. Automaton has 3730 states and 6160 transitions. Word has length 2461
[2023-11-28 20:46:25,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:25,054 INFO  L495      AbstractCegarLoop]: Abstraction has 3730 states and 6160 transitions.
[2023-11-28 20:46:25,055 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 562.5) internal successors, (2250), 4 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:25,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 3730 states and 6160 transitions.
[2023-11-28 20:46:25,086 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2463
[2023-11-28 20:46:25,086 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:25,087 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:25,087 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2023-11-28 20:46:25,087 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:25,087 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:25,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -2111144214, now seen corresponding path program 1 times
[2023-11-28 20:46:25,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:25,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487834897]
[2023-11-28 20:46:25,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:25,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:27,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:33,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked.
[2023-11-28 20:46:33,042 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:33,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487834897]
[2023-11-28 20:46:33,042 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487834897] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:33,042 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:33,043 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:46:33,043 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970028580]
[2023-11-28 20:46:33,043 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:33,044 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:46:33,045 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:33,046 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:46:33,046 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:46:33,047 INFO  L87              Difference]: Start difference. First operand 3730 states and 6160 transitions. Second operand  has 5 states, 5 states have (on average 450.6) internal successors, (2253), 5 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:33,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:33,181 INFO  L93              Difference]: Finished difference Result 9913 states and 16364 transitions.
[2023-11-28 20:46:33,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:46:33,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 450.6) internal successors, (2253), 5 states have internal predecessors, (2253), 0 states have call successors, (0), 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 2462
[2023-11-28 20:46:33,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:33,188 INFO  L225             Difference]: With dead ends: 9913
[2023-11-28 20:46:33,188 INFO  L226             Difference]: Without dead ends: 6675
[2023-11-28 20:46:33,190 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:46:33,191 INFO  L413           NwaCegarLoop]: 5751 mSDtfsCounter, 4843 mSDsluCounter, 15802 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 21553 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:33,191 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 21553 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:33,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6675 states.
[2023-11-28 20:46:33,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 3733.
[2023-11-28 20:46:33,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3733 states, 3732 states have (on average 1.6519292604501608) internal successors, (6165), 3732 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:33,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 6165 transitions.
[2023-11-28 20:46:33,231 INFO  L78                 Accepts]: Start accepts. Automaton has 3733 states and 6165 transitions. Word has length 2462
[2023-11-28 20:46:33,233 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:33,233 INFO  L495      AbstractCegarLoop]: Abstraction has 3733 states and 6165 transitions.
[2023-11-28 20:46:33,233 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 450.6) internal successors, (2253), 5 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:33,233 INFO  L276                IsEmpty]: Start isEmpty. Operand 3733 states and 6165 transitions.
[2023-11-28 20:46:33,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2464
[2023-11-28 20:46:33,258 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:33,259 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:33,259 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2023-11-28 20:46:33,259 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:33,259 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:33,259 INFO  L85        PathProgramCache]: Analyzing trace with hash 445485920, now seen corresponding path program 1 times
[2023-11-28 20:46:33,260 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:33,260 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286161976]
[2023-11-28 20:46:33,260 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:33,260 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:34,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:40,029 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 174 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:46:40,029 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:40,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286161976]
[2023-11-28 20:46:40,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286161976] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:46:40,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572448299]
[2023-11-28 20:46:40,030 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:40,030 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:46:40,030 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:46:40,032 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:46:40,035 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-28 20:46:42,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:42,424 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10781 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:46:42,514 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:46:43,144 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 106 proven. 74 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:46:43,144 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:46:43,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2023-11-28 20:46:43,266 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [572448299] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:46:43,266 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:46:43,268 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:46:43,269 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727120183]
[2023-11-28 20:46:43,269 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:43,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:43,272 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:43,274 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:43,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:46:43,275 INFO  L87              Difference]: Start difference. First operand 3733 states and 6165 transitions. Second operand  has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:43,472 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:43,472 INFO  L93              Difference]: Finished difference Result 9919 states and 16374 transitions.
[2023-11-28 20:46:43,473 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:46:43,474 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 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 2463
[2023-11-28 20:46:43,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:43,483 INFO  L225             Difference]: With dead ends: 9919
[2023-11-28 20:46:43,483 INFO  L226             Difference]: Without dead ends: 6672
[2023-11-28 20:46:43,486 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4933 GetRequests, 4919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240
[2023-11-28 20:46:43,487 INFO  L413           NwaCegarLoop]: 5747 mSDtfsCounter, 4841 mSDsluCounter, 10960 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4841 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:43,487 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4841 Valid, 16707 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:43,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6672 states.
[2023-11-28 20:46:43,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 3735.
[2023-11-28 20:46:43,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3735 states, 3734 states have (on average 1.6515800749866096) internal successors, (6167), 3734 states have internal predecessors, (6167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:43,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 6167 transitions.
[2023-11-28 20:46:43,540 INFO  L78                 Accepts]: Start accepts. Automaton has 3735 states and 6167 transitions. Word has length 2463
[2023-11-28 20:46:43,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:43,542 INFO  L495      AbstractCegarLoop]: Abstraction has 3735 states and 6167 transitions.
[2023-11-28 20:46:43,543 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:43,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 3735 states and 6167 transitions.
[2023-11-28 20:46:43,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2465
[2023-11-28 20:46:43,573 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:43,575 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:43,611 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-28 20:46:43,775 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-11-28 20:46:43,776 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:43,776 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:43,776 INFO  L85        PathProgramCache]: Analyzing trace with hash 472948418, now seen corresponding path program 1 times
[2023-11-28 20:46:43,776 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:43,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502886485]
[2023-11-28 20:46:43,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:43,777 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:45,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:50,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked.
[2023-11-28 20:46:50,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:50,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502886485]
[2023-11-28 20:46:50,336 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502886485] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:50,336 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:50,336 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:46:50,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026486109]
[2023-11-28 20:46:50,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:50,339 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:46:50,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:50,341 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:46:50,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:46:50,341 INFO  L87              Difference]: Start difference. First operand 3735 states and 6167 transitions. Second operand  has 4 states, 4 states have (on average 564.75) internal successors, (2259), 4 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:50,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:50,481 INFO  L93              Difference]: Finished difference Result 9921 states and 16374 transitions.
[2023-11-28 20:46:50,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:46:50,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 564.75) internal successors, (2259), 4 states have internal predecessors, (2259), 0 states have call successors, (0), 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 2464
[2023-11-28 20:46:50,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:50,491 INFO  L225             Difference]: With dead ends: 9921
[2023-11-28 20:46:50,491 INFO  L226             Difference]: Without dead ends: 6669
[2023-11-28 20:46:50,494 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
[2023-11-28 20:46:50,495 INFO  L413           NwaCegarLoop]: 5738 mSDtfsCounter, 4833 mSDsluCounter, 10949 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 16687 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:50,495 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4833 Valid, 16687 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:50,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6669 states.
[2023-11-28 20:46:50,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 3737.
[2023-11-28 20:46:50,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3737 states, 3736 states have (on average 1.6512312633832977) internal successors, (6169), 3736 states have internal predecessors, (6169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:50,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6169 transitions.
[2023-11-28 20:46:50,551 INFO  L78                 Accepts]: Start accepts. Automaton has 3737 states and 6169 transitions. Word has length 2464
[2023-11-28 20:46:50,552 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:50,552 INFO  L495      AbstractCegarLoop]: Abstraction has 3737 states and 6169 transitions.
[2023-11-28 20:46:50,553 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 564.75) internal successors, (2259), 4 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:50,553 INFO  L276                IsEmpty]: Start isEmpty. Operand 3737 states and 6169 transitions.
[2023-11-28 20:46:50,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2466
[2023-11-28 20:46:50,584 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:50,585 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:50,585 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2023-11-28 20:46:50,585 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:50,586 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:50,586 INFO  L85        PathProgramCache]: Analyzing trace with hash 920184390, now seen corresponding path program 1 times
[2023-11-28 20:46:50,586 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:50,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697482963]
[2023-11-28 20:46:50,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:50,587 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:46:53,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:57,801 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2023-11-28 20:46:57,801 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:57,801 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697482963]
[2023-11-28 20:46:57,801 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697482963] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:57,801 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:57,802 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:46:57,802 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849811616]
[2023-11-28 20:46:57,802 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:57,803 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:46:57,804 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:57,805 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:46:57,805 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:46:57,806 INFO  L87              Difference]: Start difference. First operand 3737 states and 6169 transitions. Second operand  has 5 states, 5 states have (on average 452.4) internal successors, (2262), 5 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:57,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:46:57,991 INFO  L93              Difference]: Finished difference Result 9934 states and 16391 transitions.
[2023-11-28 20:46:57,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:46:57,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 452.4) internal successors, (2262), 5 states have internal predecessors, (2262), 0 states have call successors, (0), 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 2465
[2023-11-28 20:46:57,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:46:58,001 INFO  L225             Difference]: With dead ends: 9934
[2023-11-28 20:46:58,001 INFO  L226             Difference]: Without dead ends: 6680
[2023-11-28 20:46:58,004 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:46:58,005 INFO  L413           NwaCegarLoop]: 5736 mSDtfsCounter, 4836 mSDsluCounter, 16678 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4836 SdHoareTripleChecker+Valid, 22414 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:46:58,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4836 Valid, 22414 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:46:58,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6680 states.
[2023-11-28 20:46:58,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 3740.
[2023-11-28 20:46:58,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3740 states, 3739 states have (on average 1.6512436480342338) internal successors, (6174), 3739 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:58,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 6174 transitions.
[2023-11-28 20:46:58,058 INFO  L78                 Accepts]: Start accepts. Automaton has 3740 states and 6174 transitions. Word has length 2465
[2023-11-28 20:46:58,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:46:58,060 INFO  L495      AbstractCegarLoop]: Abstraction has 3740 states and 6174 transitions.
[2023-11-28 20:46:58,060 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 452.4) internal successors, (2262), 5 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:46:58,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 3740 states and 6174 transitions.
[2023-11-28 20:46:58,091 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2467
[2023-11-28 20:46:58,091 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:46:58,092 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:46:58,092 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2023-11-28 20:46:58,092 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:46:58,092 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:46:58,093 INFO  L85        PathProgramCache]: Analyzing trace with hash 2106154716, now seen corresponding path program 1 times
[2023-11-28 20:46:58,093 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:46:58,093 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912685467]
[2023-11-28 20:46:58,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:46:58,093 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:00,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:05,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2023-11-28 20:47:05,186 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:05,186 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912685467]
[2023-11-28 20:47:05,187 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912685467] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:05,187 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:05,187 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:05,187 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294000815]
[2023-11-28 20:47:05,187 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:05,189 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:05,189 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:05,191 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:05,191 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:05,191 INFO  L87              Difference]: Start difference. First operand 3740 states and 6174 transitions. Second operand  has 4 states, 4 states have (on average 566.75) internal successors, (2267), 4 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:05,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:05,308 INFO  L93              Difference]: Finished difference Result 9943 states and 16406 transitions.
[2023-11-28 20:47:05,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:05,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 566.75) internal successors, (2267), 4 states have internal predecessors, (2267), 0 states have call successors, (0), 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 2466
[2023-11-28 20:47:05,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:05,316 INFO  L225             Difference]: With dead ends: 9943
[2023-11-28 20:47:05,316 INFO  L226             Difference]: Without dead ends: 6680
[2023-11-28 20:47:05,318 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:05,319 INFO  L413           NwaCegarLoop]: 5727 mSDtfsCounter, 4833 mSDsluCounter, 10940 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 16667 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:05,319 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4833 Valid, 16667 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:05,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6680 states.
[2023-11-28 20:47:05,354 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 3745.
[2023-11-28 20:47:05,356 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3745 states, 3744 states have (on average 1.6509081196581197) internal successors, (6181), 3744 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:05,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 6181 transitions.
[2023-11-28 20:47:05,360 INFO  L78                 Accepts]: Start accepts. Automaton has 3745 states and 6181 transitions. Word has length 2466
[2023-11-28 20:47:05,361 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:05,361 INFO  L495      AbstractCegarLoop]: Abstraction has 3745 states and 6181 transitions.
[2023-11-28 20:47:05,361 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 566.75) internal successors, (2267), 4 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:05,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 3745 states and 6181 transitions.
[2023-11-28 20:47:05,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2468
[2023-11-28 20:47:05,386 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:05,387 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:05,387 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2023-11-28 20:47:05,387 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:05,387 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:05,387 INFO  L85        PathProgramCache]: Analyzing trace with hash 1469819858, now seen corresponding path program 1 times
[2023-11-28 20:47:05,387 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:05,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097760288]
[2023-11-28 20:47:05,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:05,388 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:06,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:11,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2023-11-28 20:47:11,044 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:11,044 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097760288]
[2023-11-28 20:47:11,044 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097760288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:11,044 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:11,045 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:11,045 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010306397]
[2023-11-28 20:47:11,045 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:11,046 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:11,046 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:11,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:11,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:11,049 INFO  L87              Difference]: Start difference. First operand 3745 states and 6181 transitions. Second operand  has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:11,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:11,176 INFO  L93              Difference]: Finished difference Result 9958 states and 16427 transitions.
[2023-11-28 20:47:11,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:11,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 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 2467
[2023-11-28 20:47:11,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:11,183 INFO  L225             Difference]: With dead ends: 9958
[2023-11-28 20:47:11,183 INFO  L226             Difference]: Without dead ends: 6684
[2023-11-28 20:47:11,185 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:11,185 INFO  L413           NwaCegarLoop]: 5717 mSDtfsCounter, 4830 mSDsluCounter, 10930 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:11,186 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 16647 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:11,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6684 states.
[2023-11-28 20:47:11,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6684 to 3750.
[2023-11-28 20:47:11,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3750 states, 3749 states have (on average 1.6505734862630035) internal successors, (6188), 3749 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:11,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 6188 transitions.
[2023-11-28 20:47:11,226 INFO  L78                 Accepts]: Start accepts. Automaton has 3750 states and 6188 transitions. Word has length 2467
[2023-11-28 20:47:11,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:11,227 INFO  L495      AbstractCegarLoop]: Abstraction has 3750 states and 6188 transitions.
[2023-11-28 20:47:11,228 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:11,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 3750 states and 6188 transitions.
[2023-11-28 20:47:11,262 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2469
[2023-11-28 20:47:11,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:11,263 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:11,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2023-11-28 20:47:11,263 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:11,263 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:11,263 INFO  L85        PathProgramCache]: Analyzing trace with hash 1203448400, now seen corresponding path program 1 times
[2023-11-28 20:47:11,264 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:11,264 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448421017]
[2023-11-28 20:47:11,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:11,264 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:12,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:17,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked.
[2023-11-28 20:47:17,063 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:17,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448421017]
[2023-11-28 20:47:17,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448421017] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:17,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:17,064 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:17,064 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246072457]
[2023-11-28 20:47:17,064 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:17,065 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:17,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:17,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:17,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:17,067 INFO  L87              Difference]: Start difference. First operand 3750 states and 6188 transitions. Second operand  has 4 states, 4 states have (on average 569.25) internal successors, (2277), 4 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:17,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:17,181 INFO  L93              Difference]: Finished difference Result 9973 states and 16448 transitions.
[2023-11-28 20:47:17,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:17,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 569.25) internal successors, (2277), 4 states have internal predecessors, (2277), 0 states have call successors, (0), 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 2468
[2023-11-28 20:47:17,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:17,189 INFO  L225             Difference]: With dead ends: 9973
[2023-11-28 20:47:17,189 INFO  L226             Difference]: Without dead ends: 6688
[2023-11-28 20:47:17,191 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:17,191 INFO  L413           NwaCegarLoop]: 5707 mSDtfsCounter, 4827 mSDsluCounter, 10920 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 16627 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:17,191 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 16627 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:17,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6688 states.
[2023-11-28 20:47:17,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 3755.
[2023-11-28 20:47:17,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3755 states, 3754 states have (on average 1.6502397442727756) internal successors, (6195), 3754 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:17,232 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 6195 transitions.
[2023-11-28 20:47:17,232 INFO  L78                 Accepts]: Start accepts. Automaton has 3755 states and 6195 transitions. Word has length 2468
[2023-11-28 20:47:17,233 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:17,233 INFO  L495      AbstractCegarLoop]: Abstraction has 3755 states and 6195 transitions.
[2023-11-28 20:47:17,234 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 569.25) internal successors, (2277), 4 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:17,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 3755 states and 6195 transitions.
[2023-11-28 20:47:17,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2470
[2023-11-28 20:47:17,259 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:17,259 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:17,260 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2023-11-28 20:47:17,260 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:17,260 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:17,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -855171234, now seen corresponding path program 1 times
[2023-11-28 20:47:17,260 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:17,260 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690828730]
[2023-11-28 20:47:17,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:17,261 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:18,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:22,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked.
[2023-11-28 20:47:22,809 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:22,810 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690828730]
[2023-11-28 20:47:22,810 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690828730] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:22,810 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:22,810 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:22,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005102178]
[2023-11-28 20:47:22,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:22,812 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:22,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:22,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:22,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:22,814 INFO  L87              Difference]: Start difference. First operand 3755 states and 6195 transitions. Second operand  has 4 states, 4 states have (on average 570.0) internal successors, (2280), 4 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:22,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:22,925 INFO  L93              Difference]: Finished difference Result 9981 states and 16458 transitions.
[2023-11-28 20:47:22,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:47:22,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 570.0) internal successors, (2280), 4 states have internal predecessors, (2280), 0 states have call successors, (0), 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 2469
[2023-11-28 20:47:22,928 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:22,933 INFO  L225             Difference]: With dead ends: 9981
[2023-11-28 20:47:22,933 INFO  L226             Difference]: Without dead ends: 6685
[2023-11-28 20:47:22,935 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
[2023-11-28 20:47:22,936 INFO  L413           NwaCegarLoop]: 5698 mSDtfsCounter, 4821 mSDsluCounter, 10909 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 16607 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:22,936 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 16607 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:22,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6685 states.
[2023-11-28 20:47:22,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 3757.
[2023-11-28 20:47:22,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3757 states, 3756 states have (on average 1.6498935037273696) internal successors, (6197), 3756 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:22,977 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 6197 transitions.
[2023-11-28 20:47:22,977 INFO  L78                 Accepts]: Start accepts. Automaton has 3757 states and 6197 transitions. Word has length 2469
[2023-11-28 20:47:22,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:22,978 INFO  L495      AbstractCegarLoop]: Abstraction has 3757 states and 6197 transitions.
[2023-11-28 20:47:22,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 570.0) internal successors, (2280), 4 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:22,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 3757 states and 6197 transitions.
[2023-11-28 20:47:23,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2471
[2023-11-28 20:47:23,003 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:23,004 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:23,004 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2023-11-28 20:47:23,004 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:23,004 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:23,004 INFO  L85        PathProgramCache]: Analyzing trace with hash -1521309398, now seen corresponding path program 1 times
[2023-11-28 20:47:23,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:23,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737867783]
[2023-11-28 20:47:23,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:23,005 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:24,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:28,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked.
[2023-11-28 20:47:28,993 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:28,993 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737867783]
[2023-11-28 20:47:28,993 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737867783] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:28,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:28,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:47:28,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853512999]
[2023-11-28 20:47:28,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:28,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:47:28,996 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:28,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:47:28,997 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:28,997 INFO  L87              Difference]: Start difference. First operand 3757 states and 6197 transitions. Second operand  has 5 states, 5 states have (on average 456.6) internal successors, (2283), 5 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:29,140 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:29,140 INFO  L93              Difference]: Finished difference Result 9994 states and 16475 transitions.
[2023-11-28 20:47:29,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:47:29,141 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 456.6) internal successors, (2283), 5 states have internal predecessors, (2283), 0 states have call successors, (0), 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 2470
[2023-11-28 20:47:29,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:29,148 INFO  L225             Difference]: With dead ends: 9994
[2023-11-28 20:47:29,148 INFO  L226             Difference]: Without dead ends: 6696
[2023-11-28 20:47:29,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:47:29,151 INFO  L413           NwaCegarLoop]: 5696 mSDtfsCounter, 4825 mSDsluCounter, 15729 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 21425 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:29,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4825 Valid, 21425 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:29,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6696 states.
[2023-11-28 20:47:29,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 3760.
[2023-11-28 20:47:29,188 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3760 states, 3759 states have (on average 1.6499068901303537) internal successors, (6202), 3759 states have internal predecessors, (6202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:29,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6202 transitions.
[2023-11-28 20:47:29,192 INFO  L78                 Accepts]: Start accepts. Automaton has 3760 states and 6202 transitions. Word has length 2470
[2023-11-28 20:47:29,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:29,193 INFO  L495      AbstractCegarLoop]: Abstraction has 3760 states and 6202 transitions.
[2023-11-28 20:47:29,193 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 456.6) internal successors, (2283), 5 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:29,193 INFO  L276                IsEmpty]: Start isEmpty. Operand 3760 states and 6202 transitions.
[2023-11-28 20:47:29,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2472
[2023-11-28 20:47:29,218 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:29,219 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:29,219 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2023-11-28 20:47:29,219 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:29,219 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:29,219 INFO  L85        PathProgramCache]: Analyzing trace with hash -270389884, now seen corresponding path program 1 times
[2023-11-28 20:47:29,219 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:29,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173909337]
[2023-11-28 20:47:29,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:29,220 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:30,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:35,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked.
[2023-11-28 20:47:35,387 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:35,387 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173909337]
[2023-11-28 20:47:35,387 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173909337] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:35,387 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:35,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:35,388 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578220343]
[2023-11-28 20:47:35,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:35,389 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:35,389 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:35,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:35,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:35,391 INFO  L87              Difference]: Start difference. First operand 3760 states and 6202 transitions. Second operand  has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:35,504 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:35,504 INFO  L93              Difference]: Finished difference Result 10003 states and 16490 transitions.
[2023-11-28 20:47:35,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:35,505 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 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 2471
[2023-11-28 20:47:35,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:35,514 INFO  L225             Difference]: With dead ends: 10003
[2023-11-28 20:47:35,514 INFO  L226             Difference]: Without dead ends: 6696
[2023-11-28 20:47:35,517 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:35,518 INFO  L413           NwaCegarLoop]: 5687 mSDtfsCounter, 4821 mSDsluCounter, 10900 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 16587 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:35,518 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 16587 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:35,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6696 states.
[2023-11-28 20:47:35,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 3765.
[2023-11-28 20:47:35,558 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3765 states, 3764 states have (on average 1.6495749202975558) internal successors, (6209), 3764 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:35,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 6209 transitions.
[2023-11-28 20:47:35,562 INFO  L78                 Accepts]: Start accepts. Automaton has 3765 states and 6209 transitions. Word has length 2471
[2023-11-28 20:47:35,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:35,563 INFO  L495      AbstractCegarLoop]: Abstraction has 3765 states and 6209 transitions.
[2023-11-28 20:47:35,563 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:35,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 3765 states and 6209 transitions.
[2023-11-28 20:47:35,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2473
[2023-11-28 20:47:35,588 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:35,589 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:35,589 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2023-11-28 20:47:35,589 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:35,589 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:35,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -1732019938, now seen corresponding path program 1 times
[2023-11-28 20:47:35,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:35,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862055651]
[2023-11-28 20:47:35,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:35,590 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:37,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:41,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-11-28 20:47:41,379 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:41,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862055651]
[2023-11-28 20:47:41,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862055651] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:41,379 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:41,379 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:41,379 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269296759]
[2023-11-28 20:47:41,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:41,381 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:41,381 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:41,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:41,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:41,383 INFO  L87              Difference]: Start difference. First operand 3765 states and 6209 transitions. Second operand  has 4 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:41,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:41,492 INFO  L93              Difference]: Finished difference Result 10018 states and 16511 transitions.
[2023-11-28 20:47:41,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:41,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 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 2472
[2023-11-28 20:47:41,494 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:41,499 INFO  L225             Difference]: With dead ends: 10018
[2023-11-28 20:47:41,499 INFO  L226             Difference]: Without dead ends: 6700
[2023-11-28 20:47:41,502 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:41,502 INFO  L413           NwaCegarLoop]: 5677 mSDtfsCounter, 4818 mSDsluCounter, 10890 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 16567 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:41,502 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 16567 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:41,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6700 states.
[2023-11-28 20:47:41,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 3770.
[2023-11-28 20:47:41,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3770 states, 3769 states have (on average 1.6492438312549749) internal successors, (6216), 3769 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:41,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 6216 transitions.
[2023-11-28 20:47:41,542 INFO  L78                 Accepts]: Start accepts. Automaton has 3770 states and 6216 transitions. Word has length 2472
[2023-11-28 20:47:41,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:41,543 INFO  L495      AbstractCegarLoop]: Abstraction has 3770 states and 6216 transitions.
[2023-11-28 20:47:41,544 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:41,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 3770 states and 6216 transitions.
[2023-11-28 20:47:41,568 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2474
[2023-11-28 20:47:41,568 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:41,569 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:41,569 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2023-11-28 20:47:41,569 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:41,569 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:41,570 INFO  L85        PathProgramCache]: Analyzing trace with hash -1757533040, now seen corresponding path program 1 times
[2023-11-28 20:47:41,570 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:41,570 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786869321]
[2023-11-28 20:47:41,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:41,570 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:43,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:47,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2023-11-28 20:47:47,357 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:47,357 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786869321]
[2023-11-28 20:47:47,357 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786869321] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:47,357 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:47,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:47,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115693851]
[2023-11-28 20:47:47,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:47,359 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:47,359 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:47,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:47,360 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:47,361 INFO  L87              Difference]: Start difference. First operand 3770 states and 6216 transitions. Second operand  has 4 states, 4 states have (on average 574.5) internal successors, (2298), 4 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:47,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:47,469 INFO  L93              Difference]: Finished difference Result 10033 states and 16532 transitions.
[2023-11-28 20:47:47,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:47:47,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 574.5) internal successors, (2298), 4 states have internal predecessors, (2298), 0 states have call successors, (0), 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 2473
[2023-11-28 20:47:47,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:47,476 INFO  L225             Difference]: With dead ends: 10033
[2023-11-28 20:47:47,476 INFO  L226             Difference]: Without dead ends: 6704
[2023-11-28 20:47:47,478 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:47,478 INFO  L413           NwaCegarLoop]: 5667 mSDtfsCounter, 4815 mSDsluCounter, 10880 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4815 SdHoareTripleChecker+Valid, 16547 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:47,479 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4815 Valid, 16547 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:47,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6704 states.
[2023-11-28 20:47:47,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 3775.
[2023-11-28 20:47:47,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3775 states, 3774 states have (on average 1.6489136195018548) internal successors, (6223), 3774 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:47,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 6223 transitions.
[2023-11-28 20:47:47,521 INFO  L78                 Accepts]: Start accepts. Automaton has 3775 states and 6223 transitions. Word has length 2473
[2023-11-28 20:47:47,522 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:47,522 INFO  L495      AbstractCegarLoop]: Abstraction has 3775 states and 6223 transitions.
[2023-11-28 20:47:47,523 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 574.5) internal successors, (2298), 4 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:47,523 INFO  L276                IsEmpty]: Start isEmpty. Operand 3775 states and 6223 transitions.
[2023-11-28 20:47:47,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2475
[2023-11-28 20:47:47,547 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:47,548 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:47,548 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2023-11-28 20:47:47,548 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:47,548 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:47,549 INFO  L85        PathProgramCache]: Analyzing trace with hash -1713186030, now seen corresponding path program 1 times
[2023-11-28 20:47:47,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:47,549 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190842961]
[2023-11-28 20:47:47,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:47,549 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:49,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:53,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked.
[2023-11-28 20:47:53,193 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:53,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190842961]
[2023-11-28 20:47:53,194 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190842961] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:53,194 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:53,194 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:47:53,194 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7006401]
[2023-11-28 20:47:53,195 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:53,196 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:47:53,196 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:53,198 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:47:53,198 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:47:53,198 INFO  L87              Difference]: Start difference. First operand 3775 states and 6223 transitions. Second operand  has 4 states, 4 states have (on average 575.25) internal successors, (2301), 4 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:53,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:53,310 INFO  L93              Difference]: Finished difference Result 10041 states and 16542 transitions.
[2023-11-28 20:47:53,310 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:47:53,311 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 575.25) internal successors, (2301), 4 states have internal predecessors, (2301), 0 states have call successors, (0), 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 2474
[2023-11-28 20:47:53,312 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:53,317 INFO  L225             Difference]: With dead ends: 10041
[2023-11-28 20:47:53,317 INFO  L226             Difference]: Without dead ends: 6701
[2023-11-28 20:47:53,320 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
[2023-11-28 20:47:53,320 INFO  L413           NwaCegarLoop]: 5658 mSDtfsCounter, 4809 mSDsluCounter, 10869 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 16527 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:53,320 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 16527 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:53,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6701 states.
[2023-11-28 20:47:53,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6701 to 3777.
[2023-11-28 20:47:53,360 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3777 states, 3776 states have (on average 1.6485699152542372) internal successors, (6225), 3776 states have internal predecessors, (6225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:53,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 6225 transitions.
[2023-11-28 20:47:53,364 INFO  L78                 Accepts]: Start accepts. Automaton has 3777 states and 6225 transitions. Word has length 2474
[2023-11-28 20:47:53,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:53,365 INFO  L495      AbstractCegarLoop]: Abstraction has 3777 states and 6225 transitions.
[2023-11-28 20:47:53,366 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 575.25) internal successors, (2301), 4 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:53,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 3777 states and 6225 transitions.
[2023-11-28 20:47:53,391 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2476
[2023-11-28 20:47:53,391 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:53,391 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:53,391 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2023-11-28 20:47:53,391 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:53,392 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:53,392 INFO  L85        PathProgramCache]: Analyzing trace with hash 1382822902, now seen corresponding path program 1 times
[2023-11-28 20:47:53,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:53,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931529822]
[2023-11-28 20:47:53,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:53,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:47:55,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:47:59,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked.
[2023-11-28 20:47:59,549 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:47:59,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931529822]
[2023-11-28 20:47:59,550 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931529822] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:47:59,550 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:47:59,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:47:59,551 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615465755]
[2023-11-28 20:47:59,551 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:47:59,552 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:47:59,552 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:47:59,553 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:47:59,554 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:47:59,554 INFO  L87              Difference]: Start difference. First operand 3777 states and 6225 transitions. Second operand  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:59,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:47:59,715 INFO  L93              Difference]: Finished difference Result 10054 states and 16559 transitions.
[2023-11-28 20:47:59,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:47:59,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 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 2475
[2023-11-28 20:47:59,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:47:59,724 INFO  L225             Difference]: With dead ends: 10054
[2023-11-28 20:47:59,724 INFO  L226             Difference]: Without dead ends: 6712
[2023-11-28 20:47:59,728 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:47:59,728 INFO  L413           NwaCegarLoop]: 5656 mSDtfsCounter, 4812 mSDsluCounter, 16518 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 22174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:47:59,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4812 Valid, 22174 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:47:59,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6712 states.
[2023-11-28 20:47:59,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 3780.
[2023-11-28 20:47:59,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3780 states, 3779 states have (on average 1.6485842815559673) internal successors, (6230), 3779 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:59,779 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 6230 transitions.
[2023-11-28 20:47:59,779 INFO  L78                 Accepts]: Start accepts. Automaton has 3780 states and 6230 transitions. Word has length 2475
[2023-11-28 20:47:59,780 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:47:59,780 INFO  L495      AbstractCegarLoop]: Abstraction has 3780 states and 6230 transitions.
[2023-11-28 20:47:59,781 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:47:59,781 INFO  L276                IsEmpty]: Start isEmpty. Operand 3780 states and 6230 transitions.
[2023-11-28 20:47:59,806 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2477
[2023-11-28 20:47:59,806 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:47:59,806 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:47:59,807 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2023-11-28 20:47:59,807 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:47:59,807 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:47:59,807 INFO  L85        PathProgramCache]: Analyzing trace with hash -1232623956, now seen corresponding path program 1 times
[2023-11-28 20:47:59,807 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:47:59,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134683408]
[2023-11-28 20:47:59,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:47:59,808 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:01,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:05,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked.
[2023-11-28 20:48:05,686 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:05,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134683408]
[2023-11-28 20:48:05,687 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134683408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:05,687 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:05,687 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:05,687 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283078334]
[2023-11-28 20:48:05,687 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:05,689 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:05,689 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:05,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:05,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:05,690 INFO  L87              Difference]: Start difference. First operand 3780 states and 6230 transitions. Second operand  has 4 states, 4 states have (on average 576.75) internal successors, (2307), 4 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:05,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:05,802 INFO  L93              Difference]: Finished difference Result 10060 states and 16569 transitions.
[2023-11-28 20:48:05,802 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:48:05,803 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 576.75) internal successors, (2307), 4 states have internal predecessors, (2307), 0 states have call successors, (0), 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 2476
[2023-11-28 20:48:05,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:05,809 INFO  L225             Difference]: With dead ends: 10060
[2023-11-28 20:48:05,809 INFO  L226             Difference]: Without dead ends: 6709
[2023-11-28 20:48:05,812 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:48:05,812 INFO  L413           NwaCegarLoop]: 5652 mSDtfsCounter, 4811 mSDsluCounter, 10865 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 16517 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:05,813 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 16517 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:05,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6709 states.
[2023-11-28 20:48:05,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 3782.
[2023-11-28 20:48:05,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3782 states, 3781 states have (on average 1.6482412060301508) internal successors, (6232), 3781 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:05,856 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 6232 transitions.
[2023-11-28 20:48:05,856 INFO  L78                 Accepts]: Start accepts. Automaton has 3782 states and 6232 transitions. Word has length 2476
[2023-11-28 20:48:05,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:05,858 INFO  L495      AbstractCegarLoop]: Abstraction has 3782 states and 6232 transitions.
[2023-11-28 20:48:05,858 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 576.75) internal successors, (2307), 4 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:05,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 3782 states and 6232 transitions.
[2023-11-28 20:48:05,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2478
[2023-11-28 20:48:05,883 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:05,884 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:05,884 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2023-11-28 20:48:05,884 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:05,884 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:05,884 INFO  L85        PathProgramCache]: Analyzing trace with hash 141234330, now seen corresponding path program 1 times
[2023-11-28 20:48:05,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:05,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507544870]
[2023-11-28 20:48:05,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:05,885 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:07,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:11,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked.
[2023-11-28 20:48:11,815 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:11,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507544870]
[2023-11-28 20:48:11,815 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507544870] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:11,815 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:11,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:11,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353303723]
[2023-11-28 20:48:11,816 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:11,817 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:11,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:11,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:11,819 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:11,819 INFO  L87              Difference]: Start difference. First operand 3782 states and 6232 transitions. Second operand  has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:11,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:11,933 INFO  L93              Difference]: Finished difference Result 10069 states and 16580 transitions.
[2023-11-28 20:48:11,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:48:11,934 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 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 2477
[2023-11-28 20:48:11,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:11,942 INFO  L225             Difference]: With dead ends: 10069
[2023-11-28 20:48:11,942 INFO  L226             Difference]: Without dead ends: 6713
[2023-11-28 20:48:11,944 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:48:11,945 INFO  L413           NwaCegarLoop]: 5642 mSDtfsCounter, 4806 mSDsluCounter, 10855 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16497 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:11,945 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16497 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:11,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6713 states.
[2023-11-28 20:48:11,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 3787.
[2023-11-28 20:48:11,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3787 states, 3786 states have (on average 1.6479133650290545) internal successors, (6239), 3786 states have internal predecessors, (6239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:11,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 6239 transitions.
[2023-11-28 20:48:11,988 INFO  L78                 Accepts]: Start accepts. Automaton has 3787 states and 6239 transitions. Word has length 2477
[2023-11-28 20:48:11,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:11,989 INFO  L495      AbstractCegarLoop]: Abstraction has 3787 states and 6239 transitions.
[2023-11-28 20:48:11,989 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:11,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 3787 states and 6239 transitions.
[2023-11-28 20:48:12,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2479
[2023-11-28 20:48:12,014 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:12,014 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:12,015 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2023-11-28 20:48:12,015 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:12,015 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:12,015 INFO  L85        PathProgramCache]: Analyzing trace with hash 98019486, now seen corresponding path program 1 times
[2023-11-28 20:48:12,015 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:12,015 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798994068]
[2023-11-28 20:48:12,016 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:12,016 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:13,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:17,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2023-11-28 20:48:17,400 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:17,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798994068]
[2023-11-28 20:48:17,401 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798994068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:17,401 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:17,401 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:17,401 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320231814]
[2023-11-28 20:48:17,402 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:17,403 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:17,403 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:17,404 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:17,404 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:17,404 INFO  L87              Difference]: Start difference. First operand 3787 states and 6239 transitions. Second operand  has 4 states, 4 states have (on average 578.75) internal successors, (2315), 4 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:17,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:17,516 INFO  L93              Difference]: Finished difference Result 10077 states and 16590 transitions.
[2023-11-28 20:48:17,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:48:17,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 578.75) internal successors, (2315), 4 states have internal predecessors, (2315), 0 states have call successors, (0), 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 2478
[2023-11-28 20:48:17,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:17,524 INFO  L225             Difference]: With dead ends: 10077
[2023-11-28 20:48:17,524 INFO  L226             Difference]: Without dead ends: 6710
[2023-11-28 20:48:17,526 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
[2023-11-28 20:48:17,527 INFO  L413           NwaCegarLoop]: 5633 mSDtfsCounter, 4800 mSDsluCounter, 10844 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 16477 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:17,527 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4800 Valid, 16477 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:17,532 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6710 states.
[2023-11-28 20:48:17,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 3789.
[2023-11-28 20:48:17,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3789 states, 3788 states have (on average 1.647571277719113) internal successors, (6241), 3788 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:17,569 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 6241 transitions.
[2023-11-28 20:48:17,569 INFO  L78                 Accepts]: Start accepts. Automaton has 3789 states and 6241 transitions. Word has length 2478
[2023-11-28 20:48:17,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:17,570 INFO  L495      AbstractCegarLoop]: Abstraction has 3789 states and 6241 transitions.
[2023-11-28 20:48:17,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 578.75) internal successors, (2315), 4 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:17,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 3789 states and 6241 transitions.
[2023-11-28 20:48:17,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2480
[2023-11-28 20:48:17,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:17,596 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:17,596 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2023-11-28 20:48:17,596 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:17,596 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:17,597 INFO  L85        PathProgramCache]: Analyzing trace with hash 754699712, now seen corresponding path program 1 times
[2023-11-28 20:48:17,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:17,597 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724161615]
[2023-11-28 20:48:17,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:17,597 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:19,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:23,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked.
[2023-11-28 20:48:23,755 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:23,756 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724161615]
[2023-11-28 20:48:23,756 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724161615] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:23,756 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:23,756 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:48:23,756 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284315179]
[2023-11-28 20:48:23,756 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:23,758 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:48:23,758 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:23,759 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:48:23,759 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:48:23,760 INFO  L87              Difference]: Start difference. First operand 3789 states and 6241 transitions. Second operand  has 5 states, 5 states have (on average 463.6) internal successors, (2318), 5 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:23,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:23,950 INFO  L93              Difference]: Finished difference Result 10090 states and 16607 transitions.
[2023-11-28 20:48:23,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:48:23,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 463.6) internal successors, (2318), 5 states have internal predecessors, (2318), 0 states have call successors, (0), 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 2479
[2023-11-28 20:48:23,953 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:23,959 INFO  L225             Difference]: With dead ends: 10090
[2023-11-28 20:48:23,959 INFO  L226             Difference]: Without dead ends: 6721
[2023-11-28 20:48:23,962 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:48:23,962 INFO  L413           NwaCegarLoop]: 5631 mSDtfsCounter, 4803 mSDsluCounter, 16468 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 22099 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:23,963 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 22099 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:23,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6721 states.
[2023-11-28 20:48:24,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 3792.
[2023-11-28 20:48:24,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3792 states, 3791 states have (on average 1.647586388815616) internal successors, (6246), 3791 states have internal predecessors, (6246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:24,024 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 6246 transitions.
[2023-11-28 20:48:24,024 INFO  L78                 Accepts]: Start accepts. Automaton has 3792 states and 6246 transitions. Word has length 2479
[2023-11-28 20:48:24,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:24,025 INFO  L495      AbstractCegarLoop]: Abstraction has 3792 states and 6246 transitions.
[2023-11-28 20:48:24,026 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 463.6) internal successors, (2318), 5 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:24,026 INFO  L276                IsEmpty]: Start isEmpty. Operand 3792 states and 6246 transitions.
[2023-11-28 20:48:24,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2481
[2023-11-28 20:48:24,063 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:24,064 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:24,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2023-11-28 20:48:24,064 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:24,064 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:24,065 INFO  L85        PathProgramCache]: Analyzing trace with hash -1561464710, now seen corresponding path program 1 times
[2023-11-28 20:48:24,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:24,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505258822]
[2023-11-28 20:48:24,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:24,065 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:25,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:29,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked.
[2023-11-28 20:48:29,778 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:29,778 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505258822]
[2023-11-28 20:48:29,778 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505258822] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:29,778 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:29,779 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:29,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887460693]
[2023-11-28 20:48:29,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:29,780 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:29,780 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:29,782 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:29,782 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:29,782 INFO  L87              Difference]: Start difference. First operand 3792 states and 6246 transitions. Second operand  has 4 states, 4 states have (on average 580.25) internal successors, (2321), 4 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:29,944 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:29,945 INFO  L93              Difference]: Finished difference Result 10092 states and 16611 transitions.
[2023-11-28 20:48:29,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:48:29,946 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 580.25) internal successors, (2321), 4 states have internal predecessors, (2321), 0 states have call successors, (0), 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 2480
[2023-11-28 20:48:29,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:29,953 INFO  L225             Difference]: With dead ends: 10092
[2023-11-28 20:48:29,953 INFO  L226             Difference]: Without dead ends: 6714
[2023-11-28 20:48:29,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:29,955 INFO  L413           NwaCegarLoop]: 5623 mSDtfsCounter, 4797 mSDsluCounter, 10834 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4797 SdHoareTripleChecker+Valid, 16457 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:29,955 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4797 Valid, 16457 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:29,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6714 states.
[2023-11-28 20:48:29,990 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 3794.
[2023-11-28 20:48:29,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3794 states, 3793 states have (on average 1.647244924861587) internal successors, (6248), 3793 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:29,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 6248 transitions.
[2023-11-28 20:48:29,996 INFO  L78                 Accepts]: Start accepts. Automaton has 3794 states and 6248 transitions. Word has length 2480
[2023-11-28 20:48:29,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:29,997 INFO  L495      AbstractCegarLoop]: Abstraction has 3794 states and 6248 transitions.
[2023-11-28 20:48:29,998 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 580.25) internal successors, (2321), 4 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:29,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 3794 states and 6248 transitions.
[2023-11-28 20:48:30,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2482
[2023-11-28 20:48:30,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:30,023 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:30,023 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2023-11-28 20:48:30,023 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:30,023 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:30,024 INFO  L85        PathProgramCache]: Analyzing trace with hash -1970571544, now seen corresponding path program 1 times
[2023-11-28 20:48:30,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:30,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846221022]
[2023-11-28 20:48:30,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:30,024 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:31,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:35,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2023-11-28 20:48:35,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:35,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846221022]
[2023-11-28 20:48:35,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846221022] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:35,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:35,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:35,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824876987]
[2023-11-28 20:48:35,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:35,883 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:35,883 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:35,884 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:35,884 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:35,884 INFO  L87              Difference]: Start difference. First operand 3794 states and 6248 transitions. Second operand  has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:36,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:36,005 INFO  L93              Difference]: Finished difference Result 10105 states and 16628 transitions.
[2023-11-28 20:48:36,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:48:36,006 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 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 2481
[2023-11-28 20:48:36,007 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:36,012 INFO  L225             Difference]: With dead ends: 10105
[2023-11-28 20:48:36,012 INFO  L226             Difference]: Without dead ends: 6725
[2023-11-28 20:48:36,014 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:48:36,015 INFO  L413           NwaCegarLoop]: 5622 mSDtfsCounter, 4799 mSDsluCounter, 10835 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4799 SdHoareTripleChecker+Valid, 16457 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:36,015 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4799 Valid, 16457 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:36,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6725 states.
[2023-11-28 20:48:36,051 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 3797.
[2023-11-28 20:48:36,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3797 states, 3796 states have (on average 1.6472602739726028) internal successors, (6253), 3796 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:36,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6253 transitions.
[2023-11-28 20:48:36,058 INFO  L78                 Accepts]: Start accepts. Automaton has 3797 states and 6253 transitions. Word has length 2481
[2023-11-28 20:48:36,059 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:36,059 INFO  L495      AbstractCegarLoop]: Abstraction has 3797 states and 6253 transitions.
[2023-11-28 20:48:36,059 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:36,059 INFO  L276                IsEmpty]: Start isEmpty. Operand 3797 states and 6253 transitions.
[2023-11-28 20:48:36,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2483
[2023-11-28 20:48:36,084 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:36,085 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:36,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2023-11-28 20:48:36,085 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:36,085 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:36,085 INFO  L85        PathProgramCache]: Analyzing trace with hash 49536084, now seen corresponding path program 1 times
[2023-11-28 20:48:36,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:36,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300231690]
[2023-11-28 20:48:36,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:36,086 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:37,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:41,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked.
[2023-11-28 20:48:41,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:41,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300231690]
[2023-11-28 20:48:41,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300231690] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:41,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:41,848 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:41,848 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883014738]
[2023-11-28 20:48:41,848 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:41,850 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:41,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:41,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:41,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:41,851 INFO  L87              Difference]: Start difference. First operand 3797 states and 6253 transitions. Second operand  has 4 states, 4 states have (on average 581.75) internal successors, (2327), 4 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:41,966 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:41,966 INFO  L93              Difference]: Finished difference Result 10107 states and 16632 transitions.
[2023-11-28 20:48:41,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:48:41,967 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 581.75) internal successors, (2327), 4 states have internal predecessors, (2327), 0 states have call successors, (0), 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 2482
[2023-11-28 20:48:41,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:41,973 INFO  L225             Difference]: With dead ends: 10107
[2023-11-28 20:48:41,974 INFO  L226             Difference]: Without dead ends: 6718
[2023-11-28 20:48:41,976 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
[2023-11-28 20:48:41,976 INFO  L413           NwaCegarLoop]: 5613 mSDtfsCounter, 4794 mSDsluCounter, 10824 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 16437 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:41,976 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4794 Valid, 16437 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:41,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6718 states.
[2023-11-28 20:48:42,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 3799.
[2023-11-28 20:48:42,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3799 states, 3798 states have (on average 1.646919431279621) internal successors, (6255), 3798 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:42,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6255 transitions.
[2023-11-28 20:48:42,022 INFO  L78                 Accepts]: Start accepts. Automaton has 3799 states and 6255 transitions. Word has length 2482
[2023-11-28 20:48:42,024 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:42,024 INFO  L495      AbstractCegarLoop]: Abstraction has 3799 states and 6255 transitions.
[2023-11-28 20:48:42,024 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 581.75) internal successors, (2327), 4 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:42,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 3799 states and 6255 transitions.
[2023-11-28 20:48:42,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2484
[2023-11-28 20:48:42,049 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:42,049 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:42,049 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2023-11-28 20:48:42,050 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:42,050 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:42,050 INFO  L85        PathProgramCache]: Analyzing trace with hash 1557272590, now seen corresponding path program 1 times
[2023-11-28 20:48:42,050 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:42,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474485647]
[2023-11-28 20:48:42,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:42,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:43,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:48,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked.
[2023-11-28 20:48:48,305 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:48,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474485647]
[2023-11-28 20:48:48,305 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474485647] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:48,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:48,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-28 20:48:48,306 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968114044]
[2023-11-28 20:48:48,306 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:48,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:48:48,308 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:48,309 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:48:48,310 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:48:48,310 INFO  L87              Difference]: Start difference. First operand 3799 states and 6255 transitions. Second operand  has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:48,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:48,471 INFO  L93              Difference]: Finished difference Result 10120 states and 16649 transitions.
[2023-11-28 20:48:48,471 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-28 20:48:48,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 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 2483
[2023-11-28 20:48:48,474 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:48,478 INFO  L225             Difference]: With dead ends: 10120
[2023-11-28 20:48:48,478 INFO  L226             Difference]: Without dead ends: 6729
[2023-11-28 20:48:48,480 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-28 20:48:48,481 INFO  L413           NwaCegarLoop]: 5611 mSDtfsCounter, 4797 mSDsluCounter, 16428 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4797 SdHoareTripleChecker+Valid, 22039 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:48,481 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4797 Valid, 22039 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:48,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6729 states.
[2023-11-28 20:48:48,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 3802.
[2023-11-28 20:48:48,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3802 states, 3801 states have (on average 1.646935017100763) internal successors, (6260), 3801 states have internal predecessors, (6260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:48,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 6260 transitions.
[2023-11-28 20:48:48,523 INFO  L78                 Accepts]: Start accepts. Automaton has 3802 states and 6260 transitions. Word has length 2483
[2023-11-28 20:48:48,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:48,524 INFO  L495      AbstractCegarLoop]: Abstraction has 3802 states and 6260 transitions.
[2023-11-28 20:48:48,525 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:48,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 3802 states and 6260 transitions.
[2023-11-28 20:48:48,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2485
[2023-11-28 20:48:48,550 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:48,550 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:48,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2023-11-28 20:48:48,550 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:48,551 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:48,551 INFO  L85        PathProgramCache]: Analyzing trace with hash 1791520048, now seen corresponding path program 1 times
[2023-11-28 20:48:48,551 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:48,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166100820]
[2023-11-28 20:48:48,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:48,551 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:50,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:48:54,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked.
[2023-11-28 20:48:54,146 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:48:54,146 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166100820]
[2023-11-28 20:48:54,146 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166100820] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:48:54,146 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:48:54,147 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:48:54,147 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224505922]
[2023-11-28 20:48:54,147 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:48:54,148 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:48:54,148 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:48:54,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:48:54,150 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:48:54,150 INFO  L87              Difference]: Start difference. First operand 3802 states and 6260 transitions. Second operand  has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:54,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:48:54,270 INFO  L93              Difference]: Finished difference Result 10122 states and 16653 transitions.
[2023-11-28 20:48:54,270 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:48:54,271 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 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 2484
[2023-11-28 20:48:54,273 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:48:54,278 INFO  L225             Difference]: With dead ends: 10122
[2023-11-28 20:48:54,278 INFO  L226             Difference]: Without dead ends: 6722
[2023-11-28 20:48:54,280 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
[2023-11-28 20:48:54,280 INFO  L413           NwaCegarLoop]: 5603 mSDtfsCounter, 4791 mSDsluCounter, 10814 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16417 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:48:54,280 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 16417 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:48:54,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6722 states.
[2023-11-28 20:48:54,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 3804.
[2023-11-28 20:48:54,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3804 states, 3803 states have (on average 1.6465947935840126) internal successors, (6262), 3803 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:54,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 6262 transitions.
[2023-11-28 20:48:54,321 INFO  L78                 Accepts]: Start accepts. Automaton has 3804 states and 6262 transitions. Word has length 2484
[2023-11-28 20:48:54,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:48:54,323 INFO  L495      AbstractCegarLoop]: Abstraction has 3804 states and 6262 transitions.
[2023-11-28 20:48:54,323 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:48:54,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 3804 states and 6262 transitions.
[2023-11-28 20:48:54,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2486
[2023-11-28 20:48:54,348 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:48:54,349 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:48:54,349 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2023-11-28 20:48:54,349 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:48:54,349 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:48:54,349 INFO  L85        PathProgramCache]: Analyzing trace with hash -1103859146, now seen corresponding path program 1 times
[2023-11-28 20:48:54,349 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:48:54,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126683363]
[2023-11-28 20:48:54,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:48:54,350 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:48:56,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:00,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked.
[2023-11-28 20:49:00,486 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:00,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126683363]
[2023-11-28 20:49:00,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126683363] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:49:00,486 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:49:00,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:49:00,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174300661]
[2023-11-28 20:49:00,487 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:00,488 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:00,489 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:00,490 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:00,490 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:49:00,490 INFO  L87              Difference]: Start difference. First operand 3804 states and 6262 transitions. Second operand  has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:00,604 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:00,604 INFO  L93              Difference]: Finished difference Result 10135 states and 16670 transitions.
[2023-11-28 20:49:00,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:00,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 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 2485
[2023-11-28 20:49:00,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:00,611 INFO  L225             Difference]: With dead ends: 10135
[2023-11-28 20:49:00,611 INFO  L226             Difference]: Without dead ends: 6733
[2023-11-28 20:49:00,614 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:49:00,614 INFO  L413           NwaCegarLoop]: 5602 mSDtfsCounter, 4793 mSDsluCounter, 10815 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4793 SdHoareTripleChecker+Valid, 16417 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:00,614 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4793 Valid, 16417 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:00,620 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6733 states.
[2023-11-28 20:49:00,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 3807.
[2023-11-28 20:49:00,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3807 states, 3806 states have (on average 1.6466106148187074) internal successors, (6267), 3806 states have internal predecessors, (6267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:00,657 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6267 transitions.
[2023-11-28 20:49:00,657 INFO  L78                 Accepts]: Start accepts. Automaton has 3807 states and 6267 transitions. Word has length 2485
[2023-11-28 20:49:00,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:00,658 INFO  L495      AbstractCegarLoop]: Abstraction has 3807 states and 6267 transitions.
[2023-11-28 20:49:00,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:00,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 3807 states and 6267 transitions.
[2023-11-28 20:49:00,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2487
[2023-11-28 20:49:00,683 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:00,684 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:00,684 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2023-11-28 20:49:00,684 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:00,684 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:00,684 INFO  L85        PathProgramCache]: Analyzing trace with hash 19911946, now seen corresponding path program 1 times
[2023-11-28 20:49:00,685 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:00,685 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396364233]
[2023-11-28 20:49:00,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:00,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:02,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:06,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2023-11-28 20:49:06,698 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:06,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396364233]
[2023-11-28 20:49:06,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396364233] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:49:06,699 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:49:06,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:49:06,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409235804]
[2023-11-28 20:49:06,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:06,700 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:06,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:06,702 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:06,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:49:06,703 INFO  L87              Difference]: Start difference. First operand 3807 states and 6267 transitions. Second operand  has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:06,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:06,826 INFO  L93              Difference]: Finished difference Result 10144 states and 16684 transitions.
[2023-11-28 20:49:06,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:06,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 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 2486
[2023-11-28 20:49:06,828 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:06,833 INFO  L225             Difference]: With dead ends: 10144
[2023-11-28 20:49:06,833 INFO  L226             Difference]: Without dead ends: 6733
[2023-11-28 20:49:06,836 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:49:06,836 INFO  L413           NwaCegarLoop]: 5593 mSDtfsCounter, 4791 mSDsluCounter, 10806 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:06,836 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 16399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:06,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6733 states.
[2023-11-28 20:49:06,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 3814.
[2023-11-28 20:49:06,877 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3814 states, 3813 states have (on average 1.6459480723839497) internal successors, (6276), 3813 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:06,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 6276 transitions.
[2023-11-28 20:49:06,881 INFO  L78                 Accepts]: Start accepts. Automaton has 3814 states and 6276 transitions. Word has length 2486
[2023-11-28 20:49:06,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:06,882 INFO  L495      AbstractCegarLoop]: Abstraction has 3814 states and 6276 transitions.
[2023-11-28 20:49:06,882 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:06,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 3814 states and 6276 transitions.
[2023-11-28 20:49:06,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2488
[2023-11-28 20:49:06,909 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:06,909 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:06,909 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2023-11-28 20:49:06,910 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:06,910 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:06,910 INFO  L85        PathProgramCache]: Analyzing trace with hash -1598651328, now seen corresponding path program 1 times
[2023-11-28 20:49:06,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:06,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159080251]
[2023-11-28 20:49:06,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:06,911 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:08,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:12,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked.
[2023-11-28 20:49:12,905 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:12,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159080251]
[2023-11-28 20:49:12,906 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159080251] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:49:12,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:49:12,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:49:12,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088845067]
[2023-11-28 20:49:12,907 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:12,908 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:12,908 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:12,909 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:12,909 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:49:12,910 INFO  L87              Difference]: Start difference. First operand 3814 states and 6276 transitions. Second operand  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:13,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:13,023 INFO  L93              Difference]: Finished difference Result 10163 states and 16707 transitions.
[2023-11-28 20:49:13,023 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:13,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 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 2487
[2023-11-28 20:49:13,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:13,030 INFO  L225             Difference]: With dead ends: 10163
[2023-11-28 20:49:13,030 INFO  L226             Difference]: Without dead ends: 6741
[2023-11-28 20:49:13,034 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:49:13,035 INFO  L413           NwaCegarLoop]: 5585 mSDtfsCounter, 4788 mSDsluCounter, 10798 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 16383 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:13,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 16383 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:13,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6741 states.
[2023-11-28 20:49:13,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 3824.
[2023-11-28 20:49:13,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3824 states, 3823 states have (on average 1.6447815851425582) internal successors, (6288), 3823 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:13,078 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 6288 transitions.
[2023-11-28 20:49:13,078 INFO  L78                 Accepts]: Start accepts. Automaton has 3824 states and 6288 transitions. Word has length 2487
[2023-11-28 20:49:13,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:13,079 INFO  L495      AbstractCegarLoop]: Abstraction has 3824 states and 6288 transitions.
[2023-11-28 20:49:13,079 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:13,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 3824 states and 6288 transitions.
[2023-11-28 20:49:13,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2489
[2023-11-28 20:49:13,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:13,105 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:13,105 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2023-11-28 20:49:13,105 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:13,105 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:13,106 INFO  L85        PathProgramCache]: Analyzing trace with hash -712182916, now seen corresponding path program 1 times
[2023-11-28 20:49:13,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:13,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864645385]
[2023-11-28 20:49:13,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:13,106 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:14,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:19,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked.
[2023-11-28 20:49:19,258 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:19,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864645385]
[2023-11-28 20:49:19,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864645385] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:49:19,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:49:19,259 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-28 20:49:19,259 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198062901]
[2023-11-28 20:49:19,259 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:19,260 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:19,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:19,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:19,262 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:49:19,262 INFO  L87              Difference]: Start difference. First operand 3824 states and 6288 transitions. Second operand  has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:19,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:19,379 INFO  L93              Difference]: Finished difference Result 10190 states and 16739 transitions.
[2023-11-28 20:49:19,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:19,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 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 2488
[2023-11-28 20:49:19,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:19,387 INFO  L225             Difference]: With dead ends: 10190
[2023-11-28 20:49:19,388 INFO  L226             Difference]: Without dead ends: 6755
[2023-11-28 20:49:19,390 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:49:19,390 INFO  L413           NwaCegarLoop]: 5576 mSDtfsCounter, 4785 mSDsluCounter, 10789 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 16365 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:19,390 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 16365 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:19,395 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6755 states.
[2023-11-28 20:49:19,425 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 3834.
[2023-11-28 20:49:19,428 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3834 states, 3833 states have (on average 1.643882076702322) internal successors, (6301), 3833 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:19,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 6301 transitions.
[2023-11-28 20:49:19,432 INFO  L78                 Accepts]: Start accepts. Automaton has 3834 states and 6301 transitions. Word has length 2488
[2023-11-28 20:49:19,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:19,433 INFO  L495      AbstractCegarLoop]: Abstraction has 3834 states and 6301 transitions.
[2023-11-28 20:49:19,434 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:19,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 3834 states and 6301 transitions.
[2023-11-28 20:49:19,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2490
[2023-11-28 20:49:19,459 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:19,459 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:19,459 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2023-11-28 20:49:19,459 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:19,460 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:19,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1734983370, now seen corresponding path program 1 times
[2023-11-28 20:49:19,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:19,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750238929]
[2023-11-28 20:49:19,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:19,460 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:21,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:26,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 206 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:49:26,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:26,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750238929]
[2023-11-28 20:49:26,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750238929] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:26,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406949899]
[2023-11-28 20:49:26,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:26,154 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:26,154 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:49:26,155 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:49:26,157 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-28 20:49:28,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:28,356 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10864 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:49:28,395 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:49:28,839 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:49:28,839 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:49:28,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:49:28,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [406949899] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:28,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:49:28,907 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:49:28,907 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941090337]
[2023-11-28 20:49:28,908 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:28,909 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:28,909 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:28,910 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:28,910 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:49:28,910 INFO  L87              Difference]: Start difference. First operand 3834 states and 6301 transitions. Second operand  has 4 states, 4 states have (on average 587.5) internal successors, (2350), 4 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:29,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:29,045 INFO  L93              Difference]: Finished difference Result 9933 states and 16315 transitions.
[2023-11-28 20:49:29,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:49:29,046 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 587.5) internal successors, (2350), 4 states have internal predecessors, (2350), 0 states have call successors, (0), 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 2489
[2023-11-28 20:49:29,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:29,054 INFO  L225             Difference]: With dead ends: 9933
[2023-11-28 20:49:29,054 INFO  L226             Difference]: Without dead ends: 6748
[2023-11-28 20:49:29,056 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4984 GetRequests, 4971 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:49:29,056 INFO  L413           NwaCegarLoop]: 9999 mSDtfsCounter, 4779 mSDsluCounter, 15209 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4779 SdHoareTripleChecker+Valid, 25208 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:29,056 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4779 Valid, 25208 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:29,061 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6748 states.
[2023-11-28 20:49:29,094 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 3836.
[2023-11-28 20:49:29,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:29,100 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:49:29,100 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2489
[2023-11-28 20:49:29,101 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:29,101 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:49:29,101 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 587.5) internal successors, (2350), 4 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:29,101 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:49:29,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2491
[2023-11-28 20:49:29,126 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:29,127 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:29,152 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-28 20:49:29,327 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:29,328 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:29,328 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:29,329 INFO  L85        PathProgramCache]: Analyzing trace with hash 957540436, now seen corresponding path program 1 times
[2023-11-28 20:49:29,329 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:29,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10720111]
[2023-11-28 20:49:29,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:29,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:30,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:35,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 321 backedges. 206 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:49:35,655 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:35,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10720111]
[2023-11-28 20:49:35,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10720111] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:35,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755395732]
[2023-11-28 20:49:35,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:35,657 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:35,657 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:49:35,657 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:49:35,658 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-28 20:49:37,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:37,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10867 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:49:37,902 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:49:38,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 321 backedges. 174 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:49:38,348 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:49:38,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 321 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked.
[2023-11-28 20:49:38,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [755395732] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:38,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:49:38,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:49:38,446 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660602165]
[2023-11-28 20:49:38,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:38,448 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:49:38,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:38,449 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:49:38,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:49:38,449 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 469.4) internal successors, (2347), 5 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:38,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:38,704 INFO  L93              Difference]: Finished difference Result 13370 states and 21958 transitions.
[2023-11-28 20:49:38,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:38,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 469.4) internal successors, (2347), 5 states have internal predecessors, (2347), 0 states have call successors, (0), 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 2490
[2023-11-28 20:49:38,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:38,714 INFO  L225             Difference]: With dead ends: 13370
[2023-11-28 20:49:38,714 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:49:38,717 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4986 GetRequests, 4971 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:49:38,717 INFO  L413           NwaCegarLoop]: 14943 mSDtfsCounter, 9721 mSDsluCounter, 35084 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9721 SdHoareTripleChecker+Valid, 50027 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:38,717 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9721 Valid, 50027 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:38,724 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:49:38,764 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:49:38,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:38,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:49:38,771 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2490
[2023-11-28 20:49:38,772 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:38,772 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:49:38,773 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 469.4) internal successors, (2347), 5 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:38,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:49:38,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2492
[2023-11-28 20:49:38,798 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:38,798 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:38,822 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-28 20:49:38,999 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:38,999 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:38,999 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:39,000 INFO  L85        PathProgramCache]: Analyzing trace with hash -1646779122, now seen corresponding path program 1 times
[2023-11-28 20:49:39,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:39,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622519258]
[2023-11-28 20:49:39,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:39,000 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:40,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:45,721 INFO  L134       CoverageAnalysis]: Checked inductivity of 322 backedges. 207 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:49:45,721 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:45,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622519258]
[2023-11-28 20:49:45,721 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622519258] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:45,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183248712]
[2023-11-28 20:49:45,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:45,722 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:45,722 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:49:45,723 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:49:45,724 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-28 20:49:47,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:47,951 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10870 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:49:47,982 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:49:48,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 322 backedges. 170 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:49:48,395 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:49:48,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 322 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2023-11-28 20:49:48,473 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183248712] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:48,473 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:49:48,475 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:49:48,475 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593378819]
[2023-11-28 20:49:48,475 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:48,477 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:49:48,477 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:48,479 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:49:48,479 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:49:48,479 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:48,632 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:48,633 INFO  L93              Difference]: Finished difference Result 9949 states and 16337 transitions.
[2023-11-28 20:49:48,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:49:48,633 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 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 2491
[2023-11-28 20:49:48,635 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:48,639 INFO  L225             Difference]: With dead ends: 9949
[2023-11-28 20:49:48,640 INFO  L226             Difference]: Without dead ends: 6762
[2023-11-28 20:49:48,642 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4988 GetRequests, 4975 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:49:48,642 INFO  L413           NwaCegarLoop]: 10008 mSDtfsCounter, 4785 mSDsluCounter, 15218 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 25226 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:48,642 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 25226 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:48,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6762 states.
[2023-11-28 20:49:48,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 3836.
[2023-11-28 20:49:48,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:48,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:49:48,687 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2491
[2023-11-28 20:49:48,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:48,688 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:49:48,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:48,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:49:48,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2493
[2023-11-28 20:49:48,714 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:48,714 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:48,739 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-28 20:49:48,915 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:48,915 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:48,915 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:48,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -720683564, now seen corresponding path program 1 times
[2023-11-28 20:49:48,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:48,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587581402]
[2023-11-28 20:49:48,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:48,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:49:50,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:56,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 208 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:49:56,139 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:49:56,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587581402]
[2023-11-28 20:49:56,139 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587581402] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:56,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162723510]
[2023-11-28 20:49:56,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:56,140 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:56,140 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:49:56,140 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:49:56,141 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-28 20:49:58,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:49:58,461 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10873 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-28 20:49:58,490 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:49:58,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 166 proven. 17 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:49:58,873 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:49:58,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2023-11-28 20:49:58,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [162723510] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:49:58,949 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:49:58,951 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:49:58,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682238907]
[2023-11-28 20:49:58,951 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:49:58,953 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:49:58,953 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:49:58,954 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:49:58,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:49:58,955 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 468.4) internal successors, (2342), 5 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:59,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:49:59,212 INFO  L93              Difference]: Finished difference Result 13370 states and 21961 transitions.
[2023-11-28 20:49:59,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:49:59,213 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 468.4) internal successors, (2342), 5 states have internal predecessors, (2342), 0 states have call successors, (0), 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 2492
[2023-11-28 20:49:59,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:49:59,224 INFO  L225             Difference]: With dead ends: 13370
[2023-11-28 20:49:59,224 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:49:59,229 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4990 GetRequests, 4975 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:49:59,229 INFO  L413           NwaCegarLoop]: 14952 mSDtfsCounter, 9727 mSDsluCounter, 35102 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9727 SdHoareTripleChecker+Valid, 50054 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:49:59,229 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9727 Valid, 50054 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:49:59,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:49:59,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:49:59,304 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:59,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:49:59,310 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2492
[2023-11-28 20:49:59,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:49:59,312 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:49:59,313 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 468.4) internal successors, (2342), 5 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:49:59,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:49:59,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2494
[2023-11-28 20:49:59,355 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:49:59,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:49:59,381 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-28 20:49:59,556 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:49:59,556 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:49:59,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:49:59,557 INFO  L85        PathProgramCache]: Analyzing trace with hash -2062669870, now seen corresponding path program 1 times
[2023-11-28 20:49:59,557 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:49:59,557 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460004252]
[2023-11-28 20:49:59,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:49:59,558 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:02,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:07,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:07,318 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:07,319 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460004252]
[2023-11-28 20:50:07,319 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460004252] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:07,319 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724301744]
[2023-11-28 20:50:07,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:07,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:07,320 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:07,320 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:07,321 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-28 20:50:09,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:09,601 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10876 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:50:09,645 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:10,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 146 proven. 38 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:10,007 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:10,063 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked.
[2023-11-28 20:50:10,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724301744] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:10,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:10,065 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:50:10,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574654285]
[2023-11-28 20:50:10,065 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:10,066 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:50:10,066 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:10,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:50:10,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:50:10,068 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:10,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:50:10,184 INFO  L93              Difference]: Finished difference Result 10198 states and 16752 transitions.
[2023-11-28 20:50:10,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:50:10,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 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 2493
[2023-11-28 20:50:10,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:50:10,191 INFO  L225             Difference]: With dead ends: 10198
[2023-11-28 20:50:10,191 INFO  L226             Difference]: Without dead ends: 6800
[2023-11-28 20:50:10,193 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4992 GetRequests, 4979 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:50:10,193 INFO  L413           NwaCegarLoop]: 5643 mSDtfsCounter, 4803 mSDsluCounter, 10854 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16497 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:50:10,193 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16497 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:50:10,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6800 states.
[2023-11-28 20:50:10,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 3836.
[2023-11-28 20:50:10,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:10,237 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:50:10,237 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2493
[2023-11-28 20:50:10,238 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:50:10,238 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:50:10,238 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:10,238 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:50:10,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2495
[2023-11-28 20:50:10,263 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:50:10,264 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:50:10,289 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-28 20:50:10,464 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82
[2023-11-28 20:50:10,465 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:50:10,465 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:50:10,465 INFO  L85        PathProgramCache]: Analyzing trace with hash -1001815220, now seen corresponding path program 1 times
[2023-11-28 20:50:10,465 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:50:10,465 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67372075]
[2023-11-28 20:50:10,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:10,466 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:12,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:17,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:17,286 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:17,286 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67372075]
[2023-11-28 20:50:17,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67372075] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:17,287 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516896608]
[2023-11-28 20:50:17,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:17,287 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:17,287 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:17,288 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:17,289 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-28 20:50:19,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:19,545 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10879 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:50:19,635 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:20,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 136 proven. 48 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:20,009 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:20,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2023-11-28 20:50:20,080 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [516896608] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:20,081 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:20,082 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:50:20,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306612043]
[2023-11-28 20:50:20,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:20,083 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:50:20,084 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:20,084 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:50:20,085 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:20,085 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 465.4) internal successors, (2327), 5 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:20,337 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:50:20,337 INFO  L93              Difference]: Finished difference Result 13566 states and 22289 transitions.
[2023-11-28 20:50:20,337 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:50:20,338 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 465.4) internal successors, (2327), 5 states have internal predecessors, (2327), 0 states have call successors, (0), 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 2494
[2023-11-28 20:50:20,339 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:50:20,346 INFO  L225             Difference]: With dead ends: 13566
[2023-11-28 20:50:20,346 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:50:20,348 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4994 GetRequests, 4979 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:20,349 INFO  L413           NwaCegarLoop]: 10608 mSDtfsCounter, 9751 mSDsluCounter, 26417 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9751 SdHoareTripleChecker+Valid, 37025 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:50:20,349 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9751 Valid, 37025 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:50:20,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:50:20,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:50:20,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:20,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:50:20,402 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2494
[2023-11-28 20:50:20,403 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:50:20,403 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:50:20,404 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 465.4) internal successors, (2327), 5 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:20,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:50:20,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2496
[2023-11-28 20:50:20,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:50:20,429 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:50:20,454 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-28 20:50:20,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83
[2023-11-28 20:50:20,630 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:50:20,630 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:50:20,631 INFO  L85        PathProgramCache]: Analyzing trace with hash -1367234370, now seen corresponding path program 1 times
[2023-11-28 20:50:20,631 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:50:20,631 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755865698]
[2023-11-28 20:50:20,631 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:20,632 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:22,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:27,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:27,414 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:27,414 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755865698]
[2023-11-28 20:50:27,414 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755865698] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:27,414 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188588407]
[2023-11-28 20:50:27,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:27,415 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:27,415 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:27,416 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:27,416 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-28 20:50:29,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:29,586 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10883 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-28 20:50:29,615 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:30,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 132 proven. 52 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:30,023 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:30,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2023-11-28 20:50:30,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [188588407] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:30,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:30,107 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:50:30,107 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592992872]
[2023-11-28 20:50:30,107 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:30,108 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:50:30,109 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:30,109 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:50:30,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:30,110 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 465.2) internal successors, (2326), 5 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:30,335 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:50:30,335 INFO  L93              Difference]: Finished difference Result 13560 states and 22279 transitions.
[2023-11-28 20:50:30,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:50:30,336 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 465.2) internal successors, (2326), 5 states have internal predecessors, (2326), 0 states have call successors, (0), 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 2495
[2023-11-28 20:50:30,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:50:30,347 INFO  L225             Difference]: With dead ends: 13560
[2023-11-28 20:50:30,347 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:50:30,350 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4996 GetRequests, 4981 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:30,351 INFO  L413           NwaCegarLoop]: 10618 mSDtfsCounter, 9754 mSDsluCounter, 26437 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9754 SdHoareTripleChecker+Valid, 37055 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:50:30,351 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9754 Valid, 37055 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:50:30,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:50:30,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:50:30,405 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:30,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:50:30,409 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2495
[2023-11-28 20:50:30,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:50:30,410 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:50:30,411 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 465.2) internal successors, (2326), 5 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:30,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:50:30,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2497
[2023-11-28 20:50:30,437 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:50:30,437 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:50:30,463 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-28 20:50:30,637 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2023-11-28 20:50:30,638 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:50:30,638 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:50:30,638 INFO  L85        PathProgramCache]: Analyzing trace with hash 516502474, now seen corresponding path program 1 times
[2023-11-28 20:50:30,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:50:30,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720731272]
[2023-11-28 20:50:30,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:30,639 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:32,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:37,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:37,291 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:37,291 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720731272]
[2023-11-28 20:50:37,291 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720731272] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:37,291 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834660777]
[2023-11-28 20:50:37,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:37,292 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:37,292 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:37,293 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:37,294 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-28 20:50:39,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:39,468 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10886 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:50:39,498 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:39,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 128 proven. 56 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:39,867 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:39,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked.
[2023-11-28 20:50:39,947 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834660777] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:39,947 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:39,948 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:50:39,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816945319]
[2023-11-28 20:50:39,948 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:39,950 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:50:39,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:39,951 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:50:39,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:39,952 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:40,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:50:40,183 INFO  L93              Difference]: Finished difference Result 13556 states and 22271 transitions.
[2023-11-28 20:50:40,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:50:40,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 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 2496
[2023-11-28 20:50:40,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:50:40,193 INFO  L225             Difference]: With dead ends: 13556
[2023-11-28 20:50:40,193 INFO  L226             Difference]: Without dead ends: 10185
[2023-11-28 20:50:40,196 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4983 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:40,197 INFO  L413           NwaCegarLoop]: 10628 mSDtfsCounter, 9757 mSDsluCounter, 26457 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9757 SdHoareTripleChecker+Valid, 37085 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:50:40,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9757 Valid, 37085 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:50:40,204 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10185 states.
[2023-11-28 20:50:40,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10185 to 3836.
[2023-11-28 20:50:40,260 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:40,264 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:50:40,264 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2496
[2023-11-28 20:50:40,265 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:50:40,265 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:50:40,266 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:40,266 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:50:40,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2498
[2023-11-28 20:50:40,291 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:50:40,292 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:50:40,319 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-28 20:50:40,492 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:40,493 INFO  L420      AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:50:40,493 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:50:40,493 INFO  L85        PathProgramCache]: Analyzing trace with hash 123996800, now seen corresponding path program 1 times
[2023-11-28 20:50:40,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:50:40,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010771198]
[2023-11-28 20:50:40,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:40,494 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:42,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:47,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:47,219 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:47,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010771198]
[2023-11-28 20:50:47,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010771198] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:47,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741686812]
[2023-11-28 20:50:47,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:47,219 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:47,220 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:47,220 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:47,222 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-28 20:50:49,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:49,458 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10890 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:50:49,488 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:49,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 120 proven. 64 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:49,826 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:49,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2023-11-28 20:50:49,893 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [741686812] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:49,894 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:49,895 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:50:49,896 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033994006]
[2023-11-28 20:50:49,896 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:49,897 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:50:49,897 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:49,898 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:50:49,898 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:49,899 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 464.4) internal successors, (2322), 5 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:50,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:50:50,115 INFO  L93              Difference]: Finished difference Result 13542 states and 22249 transitions.
[2023-11-28 20:50:50,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:50:50,115 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 464.4) internal successors, (2322), 5 states have internal predecessors, (2322), 0 states have call successors, (0), 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 2497
[2023-11-28 20:50:50,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:50:50,124 INFO  L225             Difference]: With dead ends: 13542
[2023-11-28 20:50:50,124 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:50:50,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5000 GetRequests, 4985 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:50,128 INFO  L413           NwaCegarLoop]: 10648 mSDtfsCounter, 9763 mSDsluCounter, 26497 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9763 SdHoareTripleChecker+Valid, 37145 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:50:50,128 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9763 Valid, 37145 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:50:50,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:50:50,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:50:50,177 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:50,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:50:50,181 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2497
[2023-11-28 20:50:50,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:50:50,182 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:50:50,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 464.4) internal successors, (2322), 5 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:50:50,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:50:50,208 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2499
[2023-11-28 20:50:50,208 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:50:50,209 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:50:50,233 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-28 20:50:50,409 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:50,409 INFO  L420      AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:50:50,410 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:50:50,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 1090500422, now seen corresponding path program 1 times
[2023-11-28 20:50:50,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:50:50,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14700355]
[2023-11-28 20:50:50,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:50,410 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:50:52,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:57,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:50:57,316 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:50:57,317 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14700355]
[2023-11-28 20:50:57,317 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14700355] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:57,317 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202478438]
[2023-11-28 20:50:57,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:50:57,317 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:50:57,317 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:50:57,318 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:50:57,319 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-28 20:50:59,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:50:59,495 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10894 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:50:59,525 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:50:59,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 116 proven. 68 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:50:59,897 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:50:59,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2023-11-28 20:50:59,971 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202478438] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:50:59,971 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:50:59,972 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:50:59,973 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885064587]
[2023-11-28 20:50:59,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:50:59,974 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:50:59,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:50:59,975 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:50:59,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:50:59,975 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 464.2) internal successors, (2321), 5 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:00,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:00,206 INFO  L93              Difference]: Finished difference Result 13536 states and 22239 transitions.
[2023-11-28 20:51:00,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:51:00,207 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 464.2) internal successors, (2321), 5 states have internal predecessors, (2321), 0 states have call successors, (0), 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 2498
[2023-11-28 20:51:00,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:00,215 INFO  L225             Difference]: With dead ends: 13536
[2023-11-28 20:51:00,215 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:51:00,218 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5002 GetRequests, 4987 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:51:00,218 INFO  L413           NwaCegarLoop]: 10658 mSDtfsCounter, 9766 mSDsluCounter, 26517 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9766 SdHoareTripleChecker+Valid, 37175 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:00,218 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9766 Valid, 37175 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:00,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:51:00,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:51:00,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:00,273 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:00,273 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2498
[2023-11-28 20:51:00,274 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:00,274 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:00,275 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 464.2) internal successors, (2321), 5 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:00,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:00,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2500
[2023-11-28 20:51:00,300 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:00,301 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:00,325 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-28 20:51:00,501 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:00,501 INFO  L420      AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:00,501 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:00,502 INFO  L85        PathProgramCache]: Analyzing trace with hash -684984766, now seen corresponding path program 1 times
[2023-11-28 20:51:00,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:00,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931757277]
[2023-11-28 20:51:00,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:00,502 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:02,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:07,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:07,517 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:07,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931757277]
[2023-11-28 20:51:07,517 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931757277] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:07,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674782681]
[2023-11-28 20:51:07,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:07,518 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:07,518 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:07,519 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:07,520 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-28 20:51:09,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:09,871 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10897 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-28 20:51:09,900 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:51:10,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 72 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:51:10,270 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:51:10,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked.
[2023-11-28 20:51:10,343 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [674782681] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:10,343 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:51:10,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:51:10,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115981488]
[2023-11-28 20:51:10,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:51:10,346 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:51:10,346 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:51:10,347 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:51:10,347 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:51:10,348 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:10,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:10,572 INFO  L93              Difference]: Finished difference Result 13532 states and 22231 transitions.
[2023-11-28 20:51:10,572 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:51:10,573 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 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 2499
[2023-11-28 20:51:10,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:10,581 INFO  L225             Difference]: With dead ends: 13532
[2023-11-28 20:51:10,581 INFO  L226             Difference]: Without dead ends: 10185
[2023-11-28 20:51:10,584 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5004 GetRequests, 4989 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:51:10,584 INFO  L413           NwaCegarLoop]: 10668 mSDtfsCounter, 9769 mSDsluCounter, 26537 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9769 SdHoareTripleChecker+Valid, 37205 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:10,584 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9769 Valid, 37205 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:10,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10185 states.
[2023-11-28 20:51:10,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10185 to 3836.
[2023-11-28 20:51:10,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:10,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:10,665 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2499
[2023-11-28 20:51:10,667 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:10,667 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:10,668 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:10,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:10,710 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2501
[2023-11-28 20:51:10,710 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:10,711 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:10,738 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-11-28 20:51:10,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:10,912 INFO  L420      AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:10,912 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:10,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 1014804804, now seen corresponding path program 1 times
[2023-11-28 20:51:10,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:10,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481828167]
[2023-11-28 20:51:10,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:10,913 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:12,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:17,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:17,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:17,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481828167]
[2023-11-28 20:51:17,769 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481828167] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:17,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11777465]
[2023-11-28 20:51:17,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:17,770 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:17,770 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:17,771 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:17,771 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-28 20:51:20,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:20,110 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10901 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:51:20,153 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:51:20,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 90 proven. 94 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:51:20,518 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:51:20,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked.
[2023-11-28 20:51:20,579 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [11777465] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:20,579 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:51:20,581 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:51:20,581 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160153606]
[2023-11-28 20:51:20,581 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:51:20,582 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:51:20,582 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:51:20,583 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:51:20,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:20,584 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 4 states, 4 states have (on average 577.5) internal successors, (2310), 4 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:20,743 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:20,743 INFO  L93              Difference]: Finished difference Result 10198 states and 16752 transitions.
[2023-11-28 20:51:20,743 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:51:20,744 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 577.5) internal successors, (2310), 4 states have internal predecessors, (2310), 0 states have call successors, (0), 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 2500
[2023-11-28 20:51:20,746 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:20,752 INFO  L225             Difference]: With dead ends: 10198
[2023-11-28 20:51:20,752 INFO  L226             Difference]: Without dead ends: 6884
[2023-11-28 20:51:20,755 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5006 GetRequests, 4993 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:20,755 INFO  L413           NwaCegarLoop]: 5783 mSDtfsCounter, 4848 mSDsluCounter, 10994 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 16777 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:20,755 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4848 Valid, 16777 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:20,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6884 states.
[2023-11-28 20:51:20,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 3836.
[2023-11-28 20:51:20,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:20,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:20,818 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2500
[2023-11-28 20:51:20,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:20,819 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:20,820 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 577.5) internal successors, (2310), 4 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:20,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:20,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2502
[2023-11-28 20:51:20,847 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:20,848 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:20,873 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-28 20:51:21,048 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:21,049 INFO  L420      AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:21,049 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:21,049 INFO  L85        PathProgramCache]: Analyzing trace with hash 1087193830, now seen corresponding path program 1 times
[2023-11-28 20:51:21,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:21,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004150642]
[2023-11-28 20:51:21,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:21,050 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:22,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:27,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:27,907 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:27,907 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004150642]
[2023-11-28 20:51:27,907 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004150642] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:27,907 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908990324]
[2023-11-28 20:51:27,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:27,908 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:27,908 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:27,909 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:27,909 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-28 20:51:30,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:30,124 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10904 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-28 20:51:30,154 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:51:30,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:51:30,529 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:51:30,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2023-11-28 20:51:30,605 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [908990324] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:30,605 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:51:30,607 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:51:30,608 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316222517]
[2023-11-28 20:51:30,608 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:51:30,609 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:51:30,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:51:30,610 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:51:30,611 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:51:30,611 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 461.8) internal successors, (2309), 5 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:30,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:30,911 INFO  L93              Difference]: Finished difference Result 13491 states and 22164 transitions.
[2023-11-28 20:51:30,911 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:51:30,912 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 461.8) internal successors, (2309), 5 states have internal predecessors, (2309), 0 states have call successors, (0), 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 2501
[2023-11-28 20:51:30,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:30,924 INFO  L225             Difference]: With dead ends: 13491
[2023-11-28 20:51:30,924 INFO  L226             Difference]: Without dead ends: 10183
[2023-11-28 20:51:30,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5008 GetRequests, 4993 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:51:30,928 INFO  L413           NwaCegarLoop]: 10733 mSDtfsCounter, 9790 mSDsluCounter, 26667 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9790 SdHoareTripleChecker+Valid, 37400 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:30,928 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9790 Valid, 37400 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:30,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10183 states.
[2023-11-28 20:51:30,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 3836.
[2023-11-28 20:51:30,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:30,986 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:30,986 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2501
[2023-11-28 20:51:30,987 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:30,987 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:30,988 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 461.8) internal successors, (2309), 5 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:30,988 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:31,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2503
[2023-11-28 20:51:31,021 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:31,022 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:31,047 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-28 20:51:31,222 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:31,223 INFO  L420      AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:31,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:31,223 INFO  L85        PathProgramCache]: Analyzing trace with hash 374899712, now seen corresponding path program 1 times
[2023-11-28 20:51:31,223 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:31,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385698535]
[2023-11-28 20:51:31,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:31,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:32,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:37,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:37,798 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:37,798 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385698535]
[2023-11-28 20:51:37,798 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385698535] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:37,798 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067479147]
[2023-11-28 20:51:37,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:37,799 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:37,799 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:37,800 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:37,800 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-28 20:51:39,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:40,014 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10907 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:51:40,044 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:51:40,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 82 proven. 102 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:51:40,373 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:51:40,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2023-11-28 20:51:40,427 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067479147] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:40,427 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:51:40,429 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:51:40,429 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385790208]
[2023-11-28 20:51:40,429 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:51:40,430 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:51:40,430 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:51:40,431 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:51:40,431 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:40,432 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:40,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:40,548 INFO  L93              Difference]: Finished difference Result 10198 states and 16752 transitions.
[2023-11-28 20:51:40,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:51:40,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 0 states have call successors, (0), 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 2502
[2023-11-28 20:51:40,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:40,555 INFO  L225             Difference]: With dead ends: 10198
[2023-11-28 20:51:40,555 INFO  L226             Difference]: Without dead ends: 6896
[2023-11-28 20:51:40,558 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5010 GetRequests, 4997 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:40,558 INFO  L413           NwaCegarLoop]: 5803 mSDtfsCounter, 4854 mSDsluCounter, 11014 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 16817 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:40,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4854 Valid, 16817 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:40,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6896 states.
[2023-11-28 20:51:40,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6896 to 3836.
[2023-11-28 20:51:40,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:40,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:40,604 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2502
[2023-11-28 20:51:40,605 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:40,605 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:40,606 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:40,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:40,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2504
[2023-11-28 20:51:40,631 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:40,632 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:40,657 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-11-28 20:51:40,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:40,832 INFO  L420      AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:40,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:40,833 INFO  L85        PathProgramCache]: Analyzing trace with hash 567943142, now seen corresponding path program 1 times
[2023-11-28 20:51:40,833 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:40,833 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435259587]
[2023-11-28 20:51:40,833 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:40,833 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:42,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:47,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:47,574 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:47,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435259587]
[2023-11-28 20:51:47,574 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435259587] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:47,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054268765]
[2023-11-28 20:51:47,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:47,575 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:47,575 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:47,576 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:47,577 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-11-28 20:51:49,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:49,853 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10910 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-28 20:51:49,882 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:51:50,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 74 proven. 110 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:51:50,257 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:51:50,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-11-28 20:51:50,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054268765] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:50,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:51:50,315 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15
[2023-11-28 20:51:50,315 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927635732]
[2023-11-28 20:51:50,316 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:51:50,317 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:51:50,317 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:51:50,318 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:51:50,318 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:50,318 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:50,474 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:51:50,475 INFO  L93              Difference]: Finished difference Result 10198 states and 16752 transitions.
[2023-11-28 20:51:50,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:51:50,476 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 0 states have call successors, (0), 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 2503
[2023-11-28 20:51:50,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:51:50,484 INFO  L225             Difference]: With dead ends: 10198
[2023-11-28 20:51:50,484 INFO  L226             Difference]: Without dead ends: 6908
[2023-11-28 20:51:50,487 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5012 GetRequests, 4999 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2023-11-28 20:51:50,487 INFO  L413           NwaCegarLoop]: 5823 mSDtfsCounter, 4860 mSDsluCounter, 11034 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4860 SdHoareTripleChecker+Valid, 16857 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:51:50,487 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4860 Valid, 16857 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:51:50,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6908 states.
[2023-11-28 20:51:50,543 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6908 to 3836.
[2023-11-28 20:51:50,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:50,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:51:50,551 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2503
[2023-11-28 20:51:50,553 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:51:50,553 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:51:50,553 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:51:50,553 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:51:50,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2505
[2023-11-28 20:51:50,581 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:51:50,582 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:51:50,607 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-11-28 20:51:50,782 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:50,783 INFO  L420      AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:51:50,783 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:51:50,783 INFO  L85        PathProgramCache]: Analyzing trace with hash -719050628, now seen corresponding path program 1 times
[2023-11-28 20:51:50,783 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:51:50,783 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781959779]
[2023-11-28 20:51:50,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:50,784 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:51:52,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:51:57,745 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:51:57,745 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:51:57,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781959779]
[2023-11-28 20:51:57,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781959779] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:51:57,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978255063]
[2023-11-28 20:51:57,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:51:57,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:51:57,747 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:51:57,747 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:51:57,748 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-11-28 20:51:59,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:52:00,048 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10913 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-11-28 20:52:00,077 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:52:00,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:52:00,453 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:52:00,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-11-28 20:52:00,535 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978255063] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:52:00,535 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:52:00,538 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:52:00,538 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677232514]
[2023-11-28 20:52:00,538 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:52:00,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:52:00,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:52:00,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:52:00,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:52:00,541 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:00,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:52:00,770 INFO  L93              Difference]: Finished difference Result 13470 states and 22129 transitions.
[2023-11-28 20:52:00,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:52:00,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 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 2504
[2023-11-28 20:52:00,773 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:52:00,780 INFO  L225             Difference]: With dead ends: 13470
[2023-11-28 20:52:00,780 INFO  L226             Difference]: Without dead ends: 10186
[2023-11-28 20:52:00,783 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5014 GetRequests, 4999 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:52:00,783 INFO  L413           NwaCegarLoop]: 10773 mSDtfsCounter, 9802 mSDsluCounter, 26747 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9802 SdHoareTripleChecker+Valid, 37520 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:52:00,784 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9802 Valid, 37520 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:52:00,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10186 states.
[2023-11-28 20:52:00,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 3836.
[2023-11-28 20:52:00,836 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:00,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:52:00,840 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2504
[2023-11-28 20:52:00,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:52:00,841 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:52:00,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 460.8) internal successors, (2304), 5 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:00,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:52:00,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2506
[2023-11-28 20:52:00,867 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:52:00,867 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:52:00,892 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-11-28 20:52:01,067 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:52:01,068 INFO  L420      AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:52:01,068 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:52:01,069 INFO  L85        PathProgramCache]: Analyzing trace with hash 1084227242, now seen corresponding path program 1 times
[2023-11-28 20:52:01,069 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:52:01,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305789131]
[2023-11-28 20:52:01,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:52:01,070 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:52:03,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:52:08,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:52:08,433 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:52:08,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305789131]
[2023-11-28 20:52:08,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305789131] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:52:08,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785903002]
[2023-11-28 20:52:08,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:52:08,434 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:52:08,434 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:52:08,435 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:52:08,435 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-11-28 20:52:10,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:52:10,638 INFO  L262         TraceCheckSpWp]: Trace formula consists of 10916 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-28 20:52:10,668 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-28 20:52:11,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 64 proven. 120 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2023-11-28 20:52:11,032 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-28 20:52:11,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-11-28 20:52:11,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785903002] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:52:11,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-28 20:52:11,108 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17
[2023-11-28 20:52:11,108 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482482744]
[2023-11-28 20:52:11,108 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:52:11,109 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-28 20:52:11,109 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:52:11,110 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-28 20:52:11,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:52:11,111 INFO  L87              Difference]: Start difference. First operand 3836 states and 6303 transitions. Second operand  has 5 states, 5 states have (on average 460.4) internal successors, (2302), 5 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:11,358 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:52:11,359 INFO  L93              Difference]: Finished difference Result 13460 states and 22111 transitions.
[2023-11-28 20:52:11,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-28 20:52:11,359 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 460.4) internal successors, (2302), 5 states have internal predecessors, (2302), 0 states have call successors, (0), 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 2505
[2023-11-28 20:52:11,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:52:11,370 INFO  L225             Difference]: With dead ends: 13460
[2023-11-28 20:52:11,370 INFO  L226             Difference]: Without dead ends: 10185
[2023-11-28 20:52:11,374 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5016 GetRequests, 5001 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2023-11-28 20:52:11,374 INFO  L413           NwaCegarLoop]: 10788 mSDtfsCounter, 9808 mSDsluCounter, 26777 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9808 SdHoareTripleChecker+Valid, 37565 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:52:11,375 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9808 Valid, 37565 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:52:11,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10185 states.
[2023-11-28 20:52:11,436 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10185 to 3836.
[2023-11-28 20:52:11,439 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3836 states, 3835 states have (on average 1.6435462842242503) internal successors, (6303), 3835 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:11,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6303 transitions.
[2023-11-28 20:52:11,443 INFO  L78                 Accepts]: Start accepts. Automaton has 3836 states and 6303 transitions. Word has length 2505
[2023-11-28 20:52:11,444 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:52:11,444 INFO  L495      AbstractCegarLoop]: Abstraction has 3836 states and 6303 transitions.
[2023-11-28 20:52:11,445 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 460.4) internal successors, (2302), 5 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:52:11,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 3836 states and 6303 transitions.
[2023-11-28 20:52:11,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2507
[2023-11-28 20:52:11,470 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:52:11,471 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-28 20:52:11,495 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-11-28 20:52:11,671 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:52:11,671 INFO  L420      AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:52:11,671 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:52:11,672 INFO  L85        PathProgramCache]: Analyzing trace with hash -125029740, now seen corresponding path program 1 times
[2023-11-28 20:52:11,672 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:52:11,672 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816423303]
[2023-11-28 20:52:11,672 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:52:11,672 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:52:13,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:52:18,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 324 backedges. 209 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:52:18,507 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:52:18,507 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816423303]
[2023-11-28 20:52:18,508 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816423303] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-28 20:52:18,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626065111]
[2023-11-28 20:52:18,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:52:18,509 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-28 20:52:18,509 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:52:18,509 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-28 20:52:18,510 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bc2392-0cd0-4b89-9a56-854c1dd80366/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process