./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme --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 e5cb0b20c1a26861a3db01218fa43270af338003916050f588b6325bf53e3193
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-26 11:47:58,392 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-26 11:47:58,463 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-26 11:47:58,469 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-26 11:47:58,470 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-26 11:47:58,497 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-26 11:47:58,498 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-26 11:47:58,498 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-26 11:47:58,499 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-26 11:47:58,500 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-26 11:47:58,500 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-26 11:47:58,501 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-26 11:47:58,502 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-26 11:47:58,502 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-26 11:47:58,503 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-26 11:47:58,504 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-26 11:47:58,504 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-26 11:47:58,505 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-26 11:47:58,505 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-26 11:47:58,506 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-26 11:47:58,506 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-26 11:47:58,507 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-26 11:47:58,507 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-26 11:47:58,508 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-26 11:47:58,508 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-26 11:47:58,509 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-26 11:47:58,509 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-26 11:47:58,510 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-26 11:47:58,510 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 11:47:58,511 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-26 11:47:58,511 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-26 11:47:58,512 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-26 11:47:58,512 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-26 11:47:58,512 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-26 11:47:58,513 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-26 11:47:58,513 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-26 11:47:58,529 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-26 11:47:58,529 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-26 11:47:58,529 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-26 11:47:58,530 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_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/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_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme
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 -> e5cb0b20c1a26861a3db01218fa43270af338003916050f588b6325bf53e3193
[2023-11-26 11:47:58,877 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-26 11:47:58,909 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-26 11:47:58,912 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-26 11:47:58,915 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-26 11:47:58,915 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-26 11:47:58,917 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c
[2023-11-26 11:48:02,021 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-26 11:48:02,534 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-26 11:48:02,535 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c
[2023-11-26 11:48:02,565 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/data/ddd73b10e/1c5caca7f4be467287f00342b4bc497c/FLAGf1a7045d7
[2023-11-26 11:48:02,580 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/data/ddd73b10e/1c5caca7f4be467287f00342b4bc497c
[2023-11-26 11:48:02,583 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-26 11:48:02,585 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-26 11:48:02,586 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-26 11:48:02,586 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-26 11:48:02,592 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-26 11:48:02,593 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:02" (1/1) ...
[2023-11-26 11:48:02,594 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d97506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02, skipping insertion in model container
[2023-11-26 11:48:02,594 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:02" (1/1) ...
[2023-11-26 11:48:02,696 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-26 11:48:02,924 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_5eb46d7f-c307-4b36-8c44-29211e126fd8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c[1181,1194]
[2023-11-26 11:48:03,714 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 11:48:03,724 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-26 11:48:03,814 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_5eb46d7f-c307-4b36-8c44-29211e126fd8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c[1181,1194]
[2023-11-26 11:48:04,196 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 11:48:04,213 INFO  L206         MainTranslator]: Completed translation
[2023-11-26 11:48:04,214 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04 WrapperNode
[2023-11-26 11:48:04,214 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-26 11:48:04,216 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-26 11:48:04,216 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-26 11:48:04,216 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-26 11:48:04,224 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:04,357 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:06,183 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16878
[2023-11-26 11:48:06,184 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-26 11:48:06,185 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-26 11:48:06,190 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-26 11:48:06,190 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-26 11:48:06,218 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:06,218 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:06,596 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:06,963 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].
[2023-11-26 11:48:06,963 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:06,963 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,387 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,455 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,521 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,574 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,815 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-26 11:48:07,816 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-26 11:48:07,817 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-26 11:48:07,817 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-26 11:48:07,818 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (1/1) ...
[2023-11-26 11:48:07,829 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 11:48:07,840 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 11:48:07,853 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-26 11:48:08,033 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-26 11:48:08,057 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-26 11:48:08,057 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-26 11:48:08,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-26 11:48:08,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-26 11:48:09,127 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-26 11:48:09,137 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-26 11:48:21,371 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-26 11:48:21,725 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-26 11:48:21,726 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-26 11:48:21,728 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:21 BoogieIcfgContainer
[2023-11-26 11:48:21,729 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-26 11:48:21,732 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-26 11:48:21,732 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-26 11:48:21,736 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-26 11:48:21,736 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:02" (1/3) ...
[2023-11-26 11:48:21,737 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ad951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:21, skipping insertion in model container
[2023-11-26 11:48:21,738 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:04" (2/3) ...
[2023-11-26 11:48:21,738 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ad951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:21, skipping insertion in model container
[2023-11-26 11:48:21,738 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:21" (3/3) ...
[2023-11-26 11:48:21,740 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.driving_phils.5.prop1-back-serstep.c
[2023-11-26 11:48:21,762 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-26 11:48:21,762 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-26 11:48:21,894 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-26 11:48:21,902 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;@2f68a49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-26 11:48:21,902 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-26 11:48:21,922 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 3994 states, 3992 states have (on average 1.6748496993987976) internal successors, (6686), 3993 states have internal predecessors, (6686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:21,961 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 415
[2023-11-26 11:48:21,961 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:21,962 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]
[2023-11-26 11:48:21,963 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:21,969 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:21,970 INFO  L85        PathProgramCache]: Analyzing trace with hash 884550863, now seen corresponding path program 1 times
[2023-11-26 11:48:21,981 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:21,982 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989734389]
[2023-11-26 11:48:21,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:21,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:22,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:25,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:25,158 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:25,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989734389]
[2023-11-26 11:48:25,160 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989734389] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:25,160 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:25,160 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:25,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574055040]
[2023-11-26 11:48:25,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:25,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:25,170 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:25,214 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:25,214 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:25,229 INFO  L87              Difference]: Start difference. First operand  has 3994 states, 3992 states have (on average 1.6748496993987976) internal successors, (6686), 3993 states have internal predecessors, (6686), 0 states have call successors, (0), 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 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:25,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:25,721 INFO  L93              Difference]: Finished difference Result 7831 states and 13113 transitions.
[2023-11-26 11:48:25,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 11:48:25,724 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 414
[2023-11-26 11:48:25,732 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:25,779 INFO  L225             Difference]: With dead ends: 7831
[2023-11-26 11:48:25,779 INFO  L226             Difference]: Without dead ends: 3994
[2023-11-26 11:48:25,790 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
[2023-11-26 11:48:25,793 INFO  L413           NwaCegarLoop]: 6679 mSDtfsCounter, 1 mSDsluCounter, 13353 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20032 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 11:48:25,795 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20032 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 11:48:25,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3994 states.
[2023-11-26 11:48:25,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3994.
[2023-11-26 11:48:25,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3994 states, 3993 states have (on average 1.6739293764087153) internal successors, (6684), 3993 states have internal predecessors, (6684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:26,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 6684 transitions.
[2023-11-26 11:48:26,017 INFO  L78                 Accepts]: Start accepts. Automaton has 3994 states and 6684 transitions. Word has length 414
[2023-11-26 11:48:26,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:26,021 INFO  L495      AbstractCegarLoop]: Abstraction has 3994 states and 6684 transitions.
[2023-11-26 11:48:26,021 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:26,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 3994 states and 6684 transitions.
[2023-11-26 11:48:26,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 416
[2023-11-26 11:48:26,036 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:26,037 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]
[2023-11-26 11:48:26,037 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-26 11:48:26,038 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:26,039 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:26,039 INFO  L85        PathProgramCache]: Analyzing trace with hash 1653000385, now seen corresponding path program 1 times
[2023-11-26 11:48:26,039 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:26,040 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530345338]
[2023-11-26 11:48:26,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:26,041 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:26,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:27,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:27,295 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:27,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530345338]
[2023-11-26 11:48:27,296 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530345338] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:27,296 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:27,296 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:27,297 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437895054]
[2023-11-26 11:48:27,297 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:27,301 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:27,305 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:27,306 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:27,307 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:27,308 INFO  L87              Difference]: Start difference. First operand 3994 states and 6684 transitions. Second operand  has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:27,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:27,548 INFO  L93              Difference]: Finished difference Result 7834 states and 13111 transitions.
[2023-11-26 11:48:27,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 11:48:27,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 415
[2023-11-26 11:48:27,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:27,574 INFO  L225             Difference]: With dead ends: 7834
[2023-11-26 11:48:27,575 INFO  L226             Difference]: Without dead ends: 3997
[2023-11-26 11:48:27,580 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
[2023-11-26 11:48:27,583 INFO  L413           NwaCegarLoop]: 6679 mSDtfsCounter, 1 mSDsluCounter, 13351 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20030 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 11:48:27,583 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20030 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 11:48:27,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3997 states.
[2023-11-26 11:48:27,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3996.
[2023-11-26 11:48:27,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3996 states, 3995 states have (on average 1.6735919899874843) internal successors, (6686), 3995 states have internal predecessors, (6686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:27,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6686 transitions.
[2023-11-26 11:48:27,696 INFO  L78                 Accepts]: Start accepts. Automaton has 3996 states and 6686 transitions. Word has length 415
[2023-11-26 11:48:27,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:27,697 INFO  L495      AbstractCegarLoop]: Abstraction has 3996 states and 6686 transitions.
[2023-11-26 11:48:27,698 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:27,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 3996 states and 6686 transitions.
[2023-11-26 11:48:27,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 417
[2023-11-26 11:48:27,705 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:27,706 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]
[2023-11-26 11:48:27,706 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-26 11:48:27,706 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:27,707 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:27,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -507025623, now seen corresponding path program 1 times
[2023-11-26 11:48:27,708 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:27,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263259861]
[2023-11-26 11:48:27,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:27,709 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:27,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:28,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:28,765 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:28,765 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263259861]
[2023-11-26 11:48:28,765 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263259861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:28,765 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:28,766 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:28,766 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514927220]
[2023-11-26 11:48:28,766 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:28,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:28,767 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:28,768 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:28,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:28,769 INFO  L87              Difference]: Start difference. First operand 3996 states and 6686 transitions. Second operand  has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:29,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:29,257 INFO  L93              Difference]: Finished difference Result 11668 states and 19527 transitions.
[2023-11-26 11:48:29,257 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 11:48:29,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 416
[2023-11-26 11:48:29,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:29,305 INFO  L225             Difference]: With dead ends: 11668
[2023-11-26 11:48:29,306 INFO  L226             Difference]: Without dead ends: 7829
[2023-11-26 11:48:29,314 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
[2023-11-26 11:48:29,317 INFO  L413           NwaCegarLoop]: 7434 mSDtfsCounter, 6412 mSDsluCounter, 14104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6412 SdHoareTripleChecker+Valid, 21538 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
[2023-11-26 11:48:29,318 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6412 Valid, 21538 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:48:29,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7829 states.
[2023-11-26 11:48:29,433 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 3998.
[2023-11-26 11:48:29,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3998 states, 3997 states have (on average 1.6732549412059043) internal successors, (6688), 3997 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:29,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6688 transitions.
[2023-11-26 11:48:29,463 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6688 transitions. Word has length 416
[2023-11-26 11:48:29,464 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:29,464 INFO  L495      AbstractCegarLoop]: Abstraction has 3998 states and 6688 transitions.
[2023-11-26 11:48:29,464 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:29,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6688 transitions.
[2023-11-26 11:48:29,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 418
[2023-11-26 11:48:29,473 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:29,473 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]
[2023-11-26 11:48:29,480 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-26 11:48:29,480 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:29,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:29,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -1232983193, now seen corresponding path program 1 times
[2023-11-26 11:48:29,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:29,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562899403]
[2023-11-26 11:48:29,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:29,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:29,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:30,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:30,501 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:30,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562899403]
[2023-11-26 11:48:30,502 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562899403] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:30,502 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:30,502 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:30,503 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907774351]
[2023-11-26 11:48:30,503 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:30,504 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:30,504 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:30,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:30,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:30,505 INFO  L87              Difference]: Start difference. First operand 3998 states and 6688 transitions. Second operand  has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:30,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:30,811 INFO  L93              Difference]: Finished difference Result 11671 states and 19528 transitions.
[2023-11-26 11:48:30,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 11:48:30,811 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 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 417
[2023-11-26 11:48:30,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:30,857 INFO  L225             Difference]: With dead ends: 11671
[2023-11-26 11:48:30,857 INFO  L226             Difference]: Without dead ends: 7830
[2023-11-26 11:48:30,864 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
[2023-11-26 11:48:30,865 INFO  L413           NwaCegarLoop]: 7429 mSDtfsCounter, 6409 mSDsluCounter, 14099 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 21528 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
[2023-11-26 11:48:30,866 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6409 Valid, 21528 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:48:30,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7830 states.
[2023-11-26 11:48:30,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 4000.
[2023-11-26 11:48:30,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4000 states, 3999 states have (on average 1.6729182295573894) internal successors, (6690), 3999 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:31,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 6690 transitions.
[2023-11-26 11:48:31,019 INFO  L78                 Accepts]: Start accepts. Automaton has 4000 states and 6690 transitions. Word has length 417
[2023-11-26 11:48:31,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:31,020 INFO  L495      AbstractCegarLoop]: Abstraction has 4000 states and 6690 transitions.
[2023-11-26 11:48:31,021 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:31,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 4000 states and 6690 transitions.
[2023-11-26 11:48:31,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 419
[2023-11-26 11:48:31,028 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:31,029 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]
[2023-11-26 11:48:31,029 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-26 11:48:31,030 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:31,030 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:31,030 INFO  L85        PathProgramCache]: Analyzing trace with hash 1357233285, now seen corresponding path program 1 times
[2023-11-26 11:48:31,030 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:31,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749112497]
[2023-11-26 11:48:31,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:31,031 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:31,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:32,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:32,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:32,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749112497]
[2023-11-26 11:48:32,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749112497] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:32,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:32,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:32,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702410655]
[2023-11-26 11:48:32,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:32,167 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:32,167 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:32,168 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:32,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:32,168 INFO  L87              Difference]: Start difference. First operand 4000 states and 6690 transitions. Second operand  has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:32,456 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:32,456 INFO  L93              Difference]: Finished difference Result 11674 states and 19529 transitions.
[2023-11-26 11:48:32,456 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 11:48:32,457 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 418
[2023-11-26 11:48:32,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:32,495 INFO  L225             Difference]: With dead ends: 11674
[2023-11-26 11:48:32,495 INFO  L226             Difference]: Without dead ends: 7831
[2023-11-26 11:48:32,615 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
[2023-11-26 11:48:32,616 INFO  L413           NwaCegarLoop]: 7424 mSDtfsCounter, 6406 mSDsluCounter, 14094 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6406 SdHoareTripleChecker+Valid, 21518 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
[2023-11-26 11:48:32,616 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6406 Valid, 21518 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:48:32,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7831 states.
[2023-11-26 11:48:32,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 4002.
[2023-11-26 11:48:32,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4002 states, 4001 states have (on average 1.672581854536366) internal successors, (6692), 4001 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:32,763 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 6692 transitions.
[2023-11-26 11:48:32,764 INFO  L78                 Accepts]: Start accepts. Automaton has 4002 states and 6692 transitions. Word has length 418
[2023-11-26 11:48:32,764 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:32,765 INFO  L495      AbstractCegarLoop]: Abstraction has 4002 states and 6692 transitions.
[2023-11-26 11:48:32,765 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:32,765 INFO  L276                IsEmpty]: Start isEmpty. Operand 4002 states and 6692 transitions.
[2023-11-26 11:48:32,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 420
[2023-11-26 11:48:32,774 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:32,775 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]
[2023-11-26 11:48:32,775 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-26 11:48:32,775 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:32,776 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:32,776 INFO  L85        PathProgramCache]: Analyzing trace with hash 799472911, now seen corresponding path program 1 times
[2023-11-26 11:48:32,776 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:32,777 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627620063]
[2023-11-26 11:48:32,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:32,777 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:33,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:34,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:34,117 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:34,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627620063]
[2023-11-26 11:48:34,118 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627620063] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:34,118 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:34,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:34,118 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611465026]
[2023-11-26 11:48:34,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:34,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-26 11:48:34,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:34,121 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-26 11:48:34,121 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-26 11:48:34,122 INFO  L87              Difference]: Start difference. First operand 4002 states and 6692 transitions. Second operand  has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:34,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:34,554 INFO  L93              Difference]: Finished difference Result 12143 states and 20304 transitions.
[2023-11-26 11:48:34,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-26 11:48:34,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 419
[2023-11-26 11:48:34,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:34,570 INFO  L225             Difference]: With dead ends: 12143
[2023-11-26 11:48:34,570 INFO  L226             Difference]: Without dead ends: 8298
[2023-11-26 11:48:34,577 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
[2023-11-26 11:48:34,579 INFO  L413           NwaCegarLoop]: 7433 mSDtfsCounter, 26266 mSDsluCounter, 13352 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26266 SdHoareTripleChecker+Valid, 20785 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
[2023-11-26 11:48:34,579 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [26266 Valid, 20785 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:48:34,596 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8298 states.
[2023-11-26 11:48:34,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 4455.
[2023-11-26 11:48:34,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4455 states, 4454 states have (on average 1.671980242478671) internal successors, (7447), 4454 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:34,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 7447 transitions.
[2023-11-26 11:48:34,718 INFO  L78                 Accepts]: Start accepts. Automaton has 4455 states and 7447 transitions. Word has length 419
[2023-11-26 11:48:34,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:34,720 INFO  L495      AbstractCegarLoop]: Abstraction has 4455 states and 7447 transitions.
[2023-11-26 11:48:34,722 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:34,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 4455 states and 7447 transitions.
[2023-11-26 11:48:34,786 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2813
[2023-11-26 11:48:34,787 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:34,789 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]
[2023-11-26 11:48:34,789 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-26 11:48:34,790 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:34,790 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:34,791 INFO  L85        PathProgramCache]: Analyzing trace with hash 151790853, now seen corresponding path program 1 times
[2023-11-26 11:48:34,792 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:34,792 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290775606]
[2023-11-26 11:48:34,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:34,793 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:35,348 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-26 11:48:35,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275100985]
[2023-11-26 11:48:35,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:35,350 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 11:48:35,350 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 11:48:35,357 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 11:48:35,393 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-26 11:48:39,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 11:48:40,013 INFO  L262         TraceCheckSpWp]: Trace formula consists of 13405 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-26 11:48:40,096 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 11:48:40,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 11:48:40,276 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 11:48:40,276 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 11:48:40,276 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290775606]
[2023-11-26 11:48:40,276 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-26 11:48:40,277 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275100985]
[2023-11-26 11:48:40,277 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [275100985] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 11:48:40,277 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 11:48:40,278 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 11:48:40,278 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232016026]
[2023-11-26 11:48:40,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 11:48:40,283 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 11:48:40,283 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 11:48:40,287 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 11:48:40,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:40,288 INFO  L87              Difference]: Start difference. First operand 4455 states and 7447 transitions. Second operand  has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:40,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 11:48:40,470 INFO  L93              Difference]: Finished difference Result 8310 states and 13894 transitions.
[2023-11-26 11:48:40,471 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 11:48:40,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 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 2812
[2023-11-26 11:48:40,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 11:48:40,485 INFO  L225             Difference]: With dead ends: 8310
[2023-11-26 11:48:40,485 INFO  L226             Difference]: Without dead ends: 4465
[2023-11-26 11:48:40,491 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2811 GetRequests, 2809 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 11:48:40,492 INFO  L413           NwaCegarLoop]: 6679 mSDtfsCounter, 12 mSDsluCounter, 13348 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20027 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 11:48:40,492 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20027 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 11:48:40,500 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4465 states.
[2023-11-26 11:48:40,680 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 4457.
[2023-11-26 11:48:40,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4457 states, 4456 states have (on average 1.6716786355475763) internal successors, (7449), 4456 states have internal predecessors, (7449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:40,700 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 7449 transitions.
[2023-11-26 11:48:40,700 INFO  L78                 Accepts]: Start accepts. Automaton has 4457 states and 7449 transitions. Word has length 2812
[2023-11-26 11:48:40,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 11:48:40,702 INFO  L495      AbstractCegarLoop]: Abstraction has 4457 states and 7449 transitions.
[2023-11-26 11:48:40,703 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-26 11:48:40,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 4457 states and 7449 transitions.
[2023-11-26 11:48:40,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2813
[2023-11-26 11:48:40,763 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 11:48:40,765 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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[2023-11-26 11:48:40,802 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-26 11:48:40,973 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 11:48:40,974 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 11:48:40,974 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 11:48:40,975 INFO  L85        PathProgramCache]: Analyzing trace with hash 628414931, now seen corresponding path program 1 times
[2023-11-26 11:48:40,975 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 11:48:40,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835177541]
[2023-11-26 11:48:40,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:40,976 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 11:48:41,469 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-26 11:48:41,469 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476643529]
[2023-11-26 11:48:41,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 11:48:41,470 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 11:48:41,470 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 11:48:41,478 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 11:48:41,501 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb46d7f-c307-4b36-8c44-29211e126fd8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process